Subwoofer dodoma vlasnoruch. Active subwoofer for home - diagram and description of folding. What needs to be done

How to build a subwoofer in a car with your own hands? Motorists often provide this type of food,
Which ready-made cabinet subwoofers do not need to be powered? In this statistic we will show how
You can make a clumsy yellow subwoofer for your car with your own hands.
To create a subwoofer, we need to consider the shape of the housing, the type
acoustic design and vibration of the dynamic head.
The shape of the subwoofer body is chosen to look like a truncated pyramid, which is the most
universal, with a sloping rear wall at 23 degrees (in almost all cars, the back of the rear row of seats is angled at the same angle).

Yak type of acoustic design for the subwoofer housing is vibero-closed
box. This allows you to easily remove the transferred results. This type of acoustic
design like a phase inverter (bass reflex, vented box) and bandpass (bandpass)
We won’t take a closer look, because the stench comes out more than the folding clothes and cleaning.
Open the design (Free air) is also not visible until you approach
only for sedans.

Let's move on to selecting the subwoofer speaker. We still need a speaker for
screen is closed, then when choosing it, it is necessary to be careful with such a parameter as
quality factor Qt. This parameter is approximately 0.5 – 0.6. Since this parameter is older
0.3 - 0.5, such a speaker is more suitable for bass reflex design, and as Qt
= 0.7 – 1.2, then such dynamics are more suitable if you open the design. 3 inexpensive
For subwoofer speakers, our choice fell on the DS250 model from Hertz.

The recommendation to the magazine "Avtozvuk" for the Hertz DS250 speaker is confirmed.
An acoustically designed closed box requires a volume of approximately 23-28 liters. At
What is the frequency response of the subwoofer and the transmission characteristics of the car interior?
appear linear.

After completing the necessary duties, we begin to unpack and prepare the chair
subwoofer housing. The front wall of the subwoofer housing is cut from chipboard 23
mm, and barrels - 20 mm thick. After they sawed out the walls of the subwoofer housing
Required dimensions and required quantity, proceed before assembling the body. All connected
Constructed using PVA glue and self-tapping screws. Self-drilling screws with a border of 5 cm,
by drilling the hole under them in advance with a drill of 3 mm and countersinking with a drill of 10
mm under screw heads.

After the box has been collected from the barrels, the upper and lower walls, on one of the barrels
On the sides, a compass is used to mark the opening for the acoustic terminal.

We use a jigsaw to cut the opening.

The fragments of the acoustic terminal are squishy and can be used with a high vice
create overtones, then for this purpose we screen it with a small box.

This box is coated with glue and screwed to the side with screws.

Using a plane, we cut all protruding edges of the subwoofer housing. Using a jigsaw, we make a hole in the front panel for installing the speaker, using glue and self-tapping screws to secure it to the body.

The offensive stage that we must go through is to prevent moisture and condensation
subwoofer housing, fragments of wood on the chipboard are in ruins. For whom are you
Let's soak the body with furniture nitro varnish. It is better to carry out this procedure outside, because...
the varnish is stinking and disgusting.

The inner end of the front panel is also leaking.

The offensive stage that we need to conquer is to lose our external appearance.
For this purpose, the subwoofer body is covered with carpet. For gluing we need approximately
1.5 meters to the carpet. I use nitro lacquer as a glue.

Use a craft knife to cut the opening of the carpet under the speaker.

The corps is ready. Having run out of the remaining space, connect the subwoofer speaker to the acoustic speaker.
terminal and secure them to the body.

Subwoofer, DIY, ready! Can be connected to power supply
enjoy the bass.

Subwoofer
The thought of getting a subwoofer has not given me peace of mind for several months.
I axis once arrived at the “Radio Shop” and I saw a Semtoni woofer, and I
If you want to buy it...

Dedicating the upcoming year to the subwoofer. Having acquired a number of programs for development
subwoofer enclosures (DLSBox2000, JBL-Speakershop, WinISD ...) Most less
The program DLSBox2000 was honored. I will help and open the sub. I axis what happened -
The efficiency of this design (FI) for the speaker is 76%, for the system – 37
lyres (external dimensions 45x35x35 cm), phase inverter 75x100 mm. (Diameter/length).
Then I drew a sketch on the paper and started preparing it.

All the walls are screwed together with screws up to 50 mm long. All joints are mounted on PVA glue
(Porada - you don’t need to use glue, you’ll see each other). In the middle for greater seam strength
coated with silicone sealant. In principle, it’s not complicated, but it’s better to miss it and forget it, then take it apart again.

Then we started to putty. Vikorist putty for automobiles,
two-component (you can prepare the putty yourself by mixing the dust
wood and PVA glue, as an option). Once the putty had dried, I sanded the body
practically to the ideal flatness.

Then, after checking, open the phase inverter, the socket, and the handles.

Let's select a subwoofer to marvel at how it sounds.

All my doubts about the correctness of the procedure have been cleared up.
Self-powered subwoofer gravel smooth soft bass.
After checking with the one who couldn’t whistle anywhere, I took off the “accessories” and started to
gluing the body with self-adhesive paper made from leather texture. Zibrav.

Preparing the podium for the subwoofer
with your own hands
After preparing the podiums, it was time to think about the subwoofer. Zvichaino,
You could just buy a cabinet sub, but for a less easy way.
That's why you want to know my thought, a ready-made box for a person's help
You have to work only once, and always to different music.
Vibir technologies
Having carefully read all the recommendations, having installed a drawer like
"stealth" (adhesions, irregular shape, which repeats the shape of a part of the trunk) s
creased fabrics and carbon fibers with plywood walls.
Materials and tools
The main materials I needed were:
§ Epoxy, 9 bottles of 300 g each, produced in Dzerzhinsk.
§ Scattered fabric with a thickness of 0.3 mm (shvidshe for everything, won’t be a promise), without wax, about 2.5 sq. m.
§ Carbon fiber tape with a thickness of 0.1 mm and a width of 0.4 m - approximately 4 m.
§ Arkush plywood 9 mm - close to 1.8 sq. m.
§ Polyester putty with glass fiber - 150 g.
§ And also sandpaper, nails, screws, paper tape, plasticine, Matson aerosol powder,
"Moment" type glue, hot melt glue, carpet (carpet).
I didn’t have a jigsaw, so I used the original file – a wide one
Vuzka, also an electric drill, a hair dryer "Black&Decker", metal scissors,
A cutter is also a hammer...

Vikleyka
If you remove the subwoofer from the trunk, you will need to get to the battery and
We have more space through the opening of the gas tank neck. Mіstse, yak to be known for
I also decided to use a plastic plug to vikorist, and, as it later turned out, not for nothing, but
additionally 5 liters of volume. To prepare the surface of the cob: all glued
paper tape, including the plastic sidewall. Then I'll get some cardboard and some tape
plasticine by cutting the shell (ends) around the visor, flush with the edges, in front
glued a piece of foam 8 mm to the inner surface of the rear fender. This is for
Make sure that the form is ready and does not rest against the wing in the middle. It’s important to just calm down here
The thick cardboard walls were rolled out under a small pile, otherwise sticky
It will be impossible to pull through the door. Then the same plasticine is not enough
by adjusting the matrix to give more smooth contours to the seal.
The plasticine was heated with a hairdryer, which is even more important.
The surface prepared in this manner was lightly coated with varnish and proceeded to
pasting. The fabric was overlapped, with cuts about 15 cm wide, lightly
warming them up with a hairdryer and curling bulbs. Without smearing the surface with resin (that's how it is in summer), but letting the grease seep through first. At what stage I’m not even clear
Having revealed the future shape of the screen, I glued a large area in front.
Epoxy completely polymerizes at low temperatures, so it happened
Find a warm garage to harden the shape. It turned out much easier, but I
letting go and after the cars spent the night in the majestic warm factory garage
Urochisto vider zlipok, right, with deyakim zusillyam...
Walls
The number, shape and size of the side walls are already estimated after the place, drawing them from cardboard and
bonding hot melt adhesive (sold at Viglyad Stirzhniv, melt with a soldering iron or
is inserted into a special “gun”). But at this stage there is one important problem,
I know (I write this from myself!) a non-trivial solution.

How can you estimate the volume of the box? I didn’t even know the finished version, but I had to guess.
The speaker box held 20 liters, so I cut it out of cardboard and screwed it together
Walls so that a repeat of the box comes out. You can measure the volume more accurately
only for the help of hoarse or rare speeches... You can also go with cereal (30 liters)
cereals - oh-oh!), sand, expanded clay or polystyrene bags... There’s no mention of water yet
- the design is not airtight at all. A new decision came by itself, prote
Not immediately: I poured 6 liters of water into the original blend bags, tied them up and just
having stripped the layout of the box! Although the structure did not disintegrate due to the severity of the water,
mark your reach...
Then I visored the walls from 9 mm plywood, trying to fix the changes
volume above: thickness of walls, volume of bars and stiffeners, epoxy (9
bottles of 300 g), wrinkled fabric, etc. New walls are held together with hot-melt adhesive and other
froze. If there is any doubt about the correctness of the dimensions, then the width of the walls can be
use the reserve and withdraw the order later, once sufficient value has been accumulated.
The top wall was placed with a visor under the speaker in the standard place of the lining.
I’m also planning to organize a silent soundtrack.

Then, screwing the walls together using screws (self-propelled screws), blocks and
epoxy. The bars are best made from hard wood: beech, oak, birch. Place under
screws (I took 4 x
25 mm) dimensioned and pre-drilled with a drill of 0.5-0.75 screw diameter, otherwise
the block splits. I would like to add that by creaking the side walls together, they do not strengthen
rear - to continuously control the position of the wooden part
skloplastikovy. Then, after tearing apart the glue joint for a while, placing the block and
I re-fixed the plot with hot glue. If the wood binding is dry, thoroughly
gluing the back wall to it with epoxy, nailing it with staples (small ones)
carnations around the perimeter for an even fit. After cutting off the excess stickiness
Hooked the cloves and picked them up. When pressed, all the crevices are filled with a mixture of resin and
tirsi. The cob shape is ready. At this stage, the box will appear on the surface
sealed, so I swallowed the volume with water, and without bags.
Increased value
To increase the rigidity of wooden walls, it was simply nailed and glued
another ball of plywood. Ale I, at my own peril and risk, put a little effort into myself and
having frozen the composite material – “sandwich”. Wedged between two plywood walls
three balls of carbon fiber with resin, and the fibers were spread up and down - up and down.
The additional wall should be drilled out and made in this manner “stilnikov”
structure. As I believe, these doors do not reduce the inherent rigidity of the structure, but
This document is created with the third version of Document2PDF Pilot 2.6.97.
It is important to improve the damping of the walls. That and before that, sumi tse additional 2
liters in volume, I rejoiced. It’s entirely possible that these dirks are the most important food. I'm not here
We are 100% confident that our actions are correct, testing has shown to be bad
results...
The other one on the right is to increase the strength of the plastic part of the box. Optimal
The decisions revealed the stagnation of a similar “sandwich”. Just now three-chotiri shari
Carbon fibers were placed between the balls of crumpled fabric. I carefully make such a “sandwich”
preparing on a smooth base (ideally on a heavy-duty sheet), carefully
resin seeping through the leather ball. Then I stuck it in the middle with a sticky stick. Poperedno
coat the surface with epoxy and then apply a little “sandwich” with a hairdryer
(the resin has softened), carefully tearing it apart, seeing all the bulbs, and then using a hairdryer
already stronger. After such actions of freshly added “sandwich”, “getting up” - a little
hardened In this manner, it is entirely possible to gain cruelty ball by ball, without
ongoing new polymerization of new “sandwiches”.
For such a scheme, having collected a total amount of 8-10 balls, overlapping the pieces and
naked on plots with the greatest area. Just like that, make a “sandwich”
spluttered a few bits of the plywood walls. The form was sticking out to finish exactly, so
the surface was practically not sanded between the lining of the balls. Carbon fiber is
high module of rigidity, therefore stagnation greatly alleviates the problem. It is possible, perhaps,
Of course, we can do without it, otherwise the number of balls of wrinkled fabric will increase... I
one more point: the composite will be much more attractive if it does not dry under
vantage, and not just like that. I don’t have a vacuum unit, so I won’t let it rot, but
press the wrinkled fabric with a small bag of sand, singly, it would not be noticeable.
Rib ribs and top cover
The design was getting better and better. I tried my best to shave
the box, but it couldn’t cope with the usual deformations. Tim is not a mensch, putting the ribs of the fatness
(Roses). The stripes are stripped, and the bass on the right is serious.

Three pieces of ribs were made - from the same plywood, 3-4 cm wide. Of course, it’s not so simple
it was “close to the text” to repeat the relief of the plastic surface, but I didn’t particularly
trying: the skloplastik is all written down... Having nailed the ribs to the wooden walls,
filling the gaps between them with sticky resin and thyrsi, and then stick
poklav smuzhki sklotkanini. Glue a beech block to the bottom of the niche, gluing it
to the beast with a bunch of scraps of cloth. Well, the axis has now definitely reached the LINKOR badges.
The top cover is also made of plywood. Between two 9 mm blanks
pressing a couple of balls of carbon fiber and a ball of crumpled fabric with resin, fastening the plywood with nails
and we are pressed by vantage. Open under the speaker from behind, and then to the dry composite
construction of adhesives and nailing of the additional ring. That adds a little bit
the rigidity of the frame, the screws that fasten the dynamics are less likely to be strained on the frame
Have a long walk by the tree...
After turning the surface, carefully glue the cover to the box, tightly
screwing it in with screws. Other imperfections and screw heads are puttied and sanded.
The plastic part of the box was also puttied, and only the great shells -
bringing the surface “at zero” has no sense: who is to evaluate this, but in harshness
doesn't flow in.
The box is lined in the middle with matte black tarpaulin, although it is fakhivtsi
It is recommended to treat the interior space with anticorrosive agent in an aerosol package.
Also, in the middle, on the “Moment” glue, stick 10 mm foam rubber for the best
damping of walls. Draping part of the drawer with carpet (carpet),
having become the same “Moment”.
I bought universal ones - both for the plug and just for the exposed wire. Drilled
open in the barrel station and screw them in, coat them with sealant. Wire to speaker
taking shorter and thicker, 4 sq. mm, the area of contacts has been soldered and insulated.

Sealing dynamics
Incorrectly produced dynamic head and box (particularly problematic)
You can easily reduce your entire savings to zero. Of course, there are special ones
gaskets made of porous material, designed specifically for lining under
obіd dynamics. You can glue the speaker to the body with sealant. Ale yak yogo later
edit? I'm in love with the simple, reliable technology that gives wonderful
results. I recommend it to everyone.
The cat's bottom was smeared (like sin) with summer. Then I applied silicone sealant
(The company's "ABRO" gives wonderful results) along the edge of the opening in the body. Shchob
the head is not glued, you need to place a thin layer on the silicone track
cellophane (the whole package is suitable for small pieces - “mikes”). You will need to report further
speakers, orienting it as if they were standing far away, and screwing it in
all in gwents. After the sealant has hardened, the speakers and cellophane flex easily
come together, and on the body it is necessary to lose the ideal for a specific
head silicone gasket.

Visnovki
In my opinion, the subwoofer is Viyshov. Not particularly important, but rather zhortky and mіtsny. The result is
it turned out to be close to 33 liters - not much less for the size, but it’s not scary:
The addition of sound-absorbing material allows this discrepancy to be corrected.
Sit like a glove in the trunk, don’t jerk, the walls don’t “die” on
close to maximum density. I am filled with satisfaction. At that moment I have no
the ability to change the frequency response, having learned it by ear - giving and taking away
acoustic ballast or sound polishing.
15th April 2000, the opportunity arose to check the subwoofer from the right people
zmaganny SPL-club. For me it turned out to be completely unsatisfactory, but the subwoofer at
category "SOLO" demonstrating a sound pressure of 132.5 dB - the best result
among all participants. For one “twin” this is even more serious.

Another article about those who earn money

A subwoofer is an integrated acoustic system designed to increase frequencies in the sound range of 20-120 Hz. The subwoofer produces low frequencies, but mainly mids and highs. Because human hearing is deprived of unidentifiable low-frequency sounds, a subwoofer can be installed anyway. Making a subwoofer with your own hands is not difficult and you just need to start by purchasing speakers.

Speaker selection and support

Set up the dynamics of the dimensions:

The 6-inch speakers are used as an additional mid-bass speaker.
The 8-inch speakers are distorted when the front bass is turned off.
10-inch speakers - sound clear in a 15 - 20 liter "Closed Box" cabinet, leaving a compact subwoofer with an unbearable sound pressure.
12-inch speakers are the best option, good for a subwoofer with a volume of 25 - 35 liters.
15-inch speakers are usually used on SPL speakers, since a 60-90 liter subwoofer cannot accommodate a small car.

The basic principle of the difference in supports in a sound coil: the fewer supports there are in a booster, the greater the tension.

Use 1 - 2 ohms until the sound quality is lost.

Based on this, it is recommended to select 2-4 Ohms. Among fahivists and amateurs there is still no common thought regarding the pressure of the dynamics. But we can say for sure that the speaker should be chosen as tight as possible, lower than the maximum tension of the booster. This system is not insured for long-term operation at maximum volume: this will lead to an increase in non-linear effects and a strong decrease in the intensity of sound. It is recommended that you improve your balance.

Speaker settings

Now is the time to create a self-contained subwoofer and your virtual image. Further design of the box will be carried out using the WinISD 0.44 program and based on various dynamics characteristics, and the Thiel-Small parameters:

Qts - speaker quality factor;
Fs – resonance frequency for open space;
Vas – equivalent obligatory.

The Fs parameter does not cause any problems. For GDN35 Fs will be 38 Hz, for GDN50 - 40 Hz, and GDN75 will be 25-35 Hz. An imported speaker, or a proprietary one, has parameters that can be easily found in the WinISD 0.44 database.

Qts is the most important when opening the box. This parameter means the relationship of the transfer function of the frequency dynamics Fs to the transfer function of those frequencies whose amplitude-frequency response (AFC) is horizontal. Totto at frequencies higher than Fs. Qts indicates the efficiency of the speaker at its resonant frequency. The problem is that the woofer standard GDN is produced in different places. And the parameters for different generators vary greatly.

Before opening the box, you must take all possible Qts values and add output options.

Most devices have the following parameters:

35GDN-1-8 Qts = 0.4;
35GDN-1-4 Qts = 1±0.5;
50GDN-42D Qts = 1±0.5;
75GDN-1-4 Qts = 0.2-0.5.

Vas is not a particularly important parameter for development, its meaning is important:

GDN35 - 40-50 l.;
GDN50 – 90 l.;
GDN75 – 80 l.

Video example of a folding subwoofer:

Remaining meanings

The WinISD 0.44 program for designing a screenshot will require the following parameters:

Z - op, it is indicated in the marked dynamics, GDN35-1-4 Z = 4 Ohm, GDN75-1-8 Z = 8 Ohm and further below the list;
Re - limiting noise level: GDN35 Re = 35 W, GDN50 Re = 50 W, according to preliminary literature.
Qms - mechanical quality factor, GDN35 - 5.8, GDN75 - 2.38.
Qes – electrical quality factor, GDN35 – 0.44; GDN75 - 0.31…
dia – diffuser diameter.

Other parameters are not so important, and they may not be specified in the program.

Screen design

Next, the preparation of the subwoofer depends on the choice of the type of box. The program allows you to design several screenshots:

ZYa - close the box. Simple designed and manufactured, but has minimal CCD. Before making it foldable, completely seal the box.
FI – phase inverter. Very foldable for unpacking, but it looks like a great KKD.
- 4. BP4 and BP6 - bandpass of the 4th and similar to the 6th order. The most flexible when designed and manufactured, in order to achieve maximum efficiency at low frequencies and dampen high frequencies.

Each skin has its own positive and negative effects.

The greatest importance of selecting a screen is located under the selected speaker.

Which screen is best suited to the speaker, like the program.

Before starting the design, create a new speaker with its own parameters in the database. Click New, then select Own drivers, then New, select your parameters, OK, Close.

Then we will create the project according to the settings of the created speaker. We repeat the procedure more tightly several times, vikorist and different types of boxes.

The design itself involves changing the size of the box and adjusting the frequency of the phase inverters. The program reacts to changes that are made and changes the sound schedule according to the frequency. To adjust the frequency of the phase inverter, change the diameter of the pipes. Also, the diameter of the pipes is added to the bottom, which is set in the pipeline field. It is necessary to guard so that the dove of the pipes does not appear overwhelmingly large, and does not become the Vent mach field of reds.

The ideal graph moves at a frequency of 25-35 Hz along the -3 dB line, and then passes along the 0 dB line and falls off at approximately 150-200 Hz. In another design, we focus on the search for optimal permissible changes.

Robimo building

Now a report about those. How to build a subwoofer with your own hands. The shape of the subwoofer body is designed to look like a slightly truncated pyramid, which makes it the most universal. The rear wall is slanted at 23 degrees, which is why most cars have a rear seat backrest that is folded under such a cut. After completing the required service, we will pay for the insurance and install the housing of the new subwoofer.

The screen is closed

The front wall will be made of chipboard 23 mm thick, and the side wall will be 20 mm thick. We weld the walls of the required dimensions and in the required quantity, then we assemble the body.

All connections are best made with glue and screws, which are screwed in at intervals of 5 cm.

Under them, drill in front with a drill with a diameter of 3 mm, and under the heads of the screws take a drill of 10 mm.

Then, using a compass, mark the opening for the acoustic terminal. The opening is cut with a jigsaw. The acoustic terminal under high pressure can produce sounds. To make it unique, we screen it behind another small box. It is coated with glue and fastened with screws. Using a plane we cut the parts of the body that will protrude.

On the front station, in the same way, the opening for installing the speaker is marked and visible. Make sure to soak it with furniture nitro varnish. The varnish is applied to the front panel, to the inner end. For a greater appearance, you can cover the doorbells with carpet. Like glue, it is treated with the same nitrolac. We connect the subwoofer speaker and the acoustic terminal and secure them to the housing.

Phase inverter

This type is more bulky and more difficult to install and adjust, but the self-propelled subwoofer has a high frequency sound quality and the vibrancy of the sound is significantly superior to the previous option. As before, the configuration of parameters is carried out using one of the programs.

We check the required dimensions of the wall and carefully fasten them together with one glue and self-tapping screws. It is recommended to coat the middle of the seams with silicone sealant. For puttying, a two-component automotive putty is used. It is necessary to carefully sand the body.

It is possible to open for the phase inverter, special handles and sockets. We install and check the reliability of all fasteners. The body can be covered with leather.

There are options for the gap type. The main feature is a unique light-duty inverter. Thanks to the special design of the fastening, it is easier to work with the help of long screws; for sealing, rare flowers or “Moment” glue are used. However, the greatest value and sealing comes from curing the fabric with epoxy resin. In another way, the process of preparation and folding is similar to that of a basic phase inverter.

Bandpass 4th order

This is for those who are aware of the completed processes and preparations.

The 4th order bandpass is easy to install and easy to handle in terms of size.

However, you can see a loud sound and QCD. In addition, it provides the greatest protection from external influx, resulting from the dynamics of expansion in the middle of the body.

The design of the dimensions of the case is carried out using the same computer program. It is important to properly irrigate not only the size of the body, but also the skin around the chambers. When cutting out all the details, make sure to accurately match the dimensions. Then we assemble the structure using additional glue, sealant and screws.

After assembly, we carefully seal the seams with the same sealant or with rare colors. The partition with the speaker mounted on it is made from 2 sheets of chipboard. The area connecting to the speaker is coated with sealant or silicone and pressed firmly with screws.

Then saw through the hole for the adhesive and cover the middle with noise-absorbing material. You can vikorystuvat, for example, batting. Apply the glue trace not over the entire area, but in small strokes, so that the insulating material does not appear static. Additionally, you can attach it to an additional stapler. Next we solder the wires to the terminal and to the speaker.

Now the rear camera is folded and completely sealed. Then place the batting on it. After that, firmly secure it with screws and glue. To improve the tightness, use thin stripes and apply tape over the seams.

To make a subwoofer with your own hands, you can buy a phase inverter or, since there is no obvious size required, make it yourself from a plastic tube. You can install a sewer pipe with a diameter of 100 mm. The phase inverter consists of two parts and has pipes, on the front part of a larger diameter.

You can make a pipe by heating the edges of the pipe and using a jar or expanding plates.

At the door, we saw through the opening with a jigsaw, placing the carpet together with the phase inverter, having previously coated the joint with rare flowers. We glue the back side of the cover and the phase inverter with noise-absorbing material, you can use the same batting. We select the finished subwoofer and cover it with carpet.

Bandpass 6th order

The most foldable subwoofer available. Ground preparation of the robot is required. This is equal to BP 4, but the frequency range appears to be much larger. It is difficult to properly insure the CCD and the tension of this subwoofer using an additional simulation program. All parameters are selected based on specific requirements.

The attachment to the body is folding, lower in other subwoofers, so in order to give additional value to their connections, they are built using wooden blocks, which are secured with self-tapping screws. All details are strictly measured according to dimensions. At the partition, which is intended for the dynamic head, use a compass to mark the opening, mark and drill the opening for fastening the speaker. Far away, there is a solid block around the perimeter. Then we connect one of the side walls of the subwoofer to the bottom and install a partition under the speaker.

The other side wall of the subwoofer is secured behind the wall to the partition and bottom. Therefore, the bars are fastened along the perimeter of both chambers. The other side wall of the body is also attached to the bottom of the partition. Then the bars are attached around the perimeter of the chambers. Next, 2 openings for the phase inverters are opened, and the subwoofer is assembled. Try for a technology similar to BP 4. In addition, cotton wool is used as an additional soundproofing material. Place between the batting and the inner surface of the subwoofer housing. As a result, the subwoofer can be customized.

Self-propelled stealth subwoofer

Such a subwoofer is lightweight and does not take up much space in the trunk. As a result, it’s easy to vikorist at the car.

Consider installing it in the trunk of the car behind the rear fender arch.

A good speaker will require a screen with a volume of up to 18 liters, and sometimes more. You can take some of the front panel of the body into the trunk, or, having placed the tray in the trunk, occupy the niche reserved for the spare wheel.

When installing the stealth, hang out the front panel a little and carefully connect it with the standard trunk trim. Check the casing along the line of contact between the boosters and the subwoofer. Work with molded plastics begins by masking the surface at the points of contact with the polyester resin. Using corrugated cardboard, cut into a shape and glue the pieces together with masking tape. Assemble the metal frame for support, focusing on the edge and skloplastika. After which we take possession.

Also with skloplastika it is possible to cladding panel for reinforcements already on the installed frame. To do this, we close all the gaps between the MDF sheets with polyethylene and tape. After this we install everything with self-tapping screws on the box body. Corrugated cardboard is used as formwork to fill the gaps around the subwoofer housing. Between the parts it is necessary to collect the same amount of plastic that is found in other industries. Using plastic and putty gives the exterior appearance of the body a more attractive appearance. We install the subwoofer at the fender of the car and you can remove irregularities with polyester putty and level it with an additional emery paper. The body is covered with carpet and the speaker is attached.

Installation of subwoofer subwoofer

For illumination, use light-colored LEDs or decorate with a light-colored stitch. LEDs have 2 contacts, Anode (A) and Cathode (K). To connect the LED correctly and proceed, you need to connect the contacts: A is connected to the plus on the life line, K - to the minus. The resistors themselves are soldered to A, based on the formula of the OMA law.

This comes from the fact that the operating voltage of the LED is Usv = 3V, the operating voltage Isv = 10mA = 0.01A. Solder the resistors to the contact of the skin near the LED. You also need to look at the back to secure the LED in the middle of the subwoofer. It’s best to spread them out so that the stench is washed away all at once.

When a single stitch is illuminated, the process of fixing the diodes is replaced by the stitch design. It has LEDs already installed and firmly secured. You can attach the LEDs to the inner surface of the subwoofer with double-sided tape.

Working with a light-colored stitch is very simple. It allows you to create brilliant design solutions and effective lighting. For example, there is one ring that separates the speaker. It is recommended to choose the color, brightness and color of any choice for a rich taste.

Another thing is to install the equalizer on the rear wheel of the car. The neon equalizer, which responds to peak amplitudes, as seen in the subwoofer, mutes the stripped light stops. This is an original solution to the light design of the installed subwoofer.

No matter how powerful the car is, it’s difficult to worry about it with too much power. For the sake of the fakhivts, they may no longer be of a recommendatory nature. You can also enjoy making and installing subwoofers with your own hands. Viewers of our site can use the comments to express their thoughts about the statistical methods or describe their power. We will be happy to hear about your idea.

Noviny
Workshop

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An acoustic booster in a car allows you to ensure the production of low frequencies with high luminosity. To build a subwoofer in your car with your own hands, you need to select a speaker, type of housing, and also consider all the details of the selected device.

[Prikhovati]

What kind of speaker is needed?

The unique design of a small acoustic subwoofer, which requires performance, depends on the type of music speaker, which is the base. It is necessary to improve the dimensions of the device and its technical power.

Parameters

The main characteristic when choosing the speaker for the subwoofer is the speaker. If the voltage on the device becomes close to 1-2 ohms, this will lead to a decrease in sound brilliance. The best option would be to purchase a speaker with support in the 2-4 Ohm range. When adding a device, it is important to note one nuance - the tension of the column will be greater, but the lower parameter will be stronger. This is due to the fact that the dynamics require a large supply of value as a difference in order to increase its service life.
If you already have a column and booster on your hands, then you need to calculate the difference in forces between these devices. Then you need to make an icon on the remaining volume control so that you don’t over-extend it. It is necessary to remember that the speaker does not preserve the sound quality, operating at maximum volume. As a result of such operation, the balance of frequencies will be disrupted.

The Flexing Studio channel talks about the selection of technical parameters for automotive acoustic equipment.

Rosemary

Make a subwoofer in your car with your own hands, depending on the dimensions of the device:

Speakers with a diameter of 6 inches are designed to serve as an additional source of mid-bass. It is impossible to ensure the acoustics of the middle-sounding subwoofer. The optimal use of such speakers is in the interiors of small cars.
The devices have 8 inches of unprotected ostosuvaniya as additional frontal low frequencies. In practice, this is not the best option for choosing a main subwoofer.
Speakers of 10 or more inches are the optimal type. Such devices will ensure a clear sound, preferably in place of the body with strong vibration. If you install the speaker with the screen closed, you will get a clear sound noise. The best option is for speakers 12 inches or larger; their installation allows for enclosures with a volume of up to 35 liters.
For the interior of a great car, it is recommended to install 15-inch extensions. However, in terms of implementation, it’s difficult to do, since for such a speaker you will need a housing with a volume of about 90 liters.

Channel D Style Audio. Studio "Avtozvuku" asked about the choice of box sizes and gave recommendations on how to avoid grinding when preparing the dough.

Select subwoofer view

The first step is to install a subwoofer for the speaker system in a car, you need to pay attention to the view. Today, there are two types of devices - active and passive. The first ones have a built-in system of sound reinforcement path, and also have the ability to regulate the frequency balance - an equalizer. In general, such subwoofers will not require the same characteristics of a standard audio system. The speaker independently pumps the stoppers to the required value.

The high reliability of the device should be taken into account to the main features. This is due to the factory layout, as well as engineering design, which is important for subwoofer manufacturers. Since the priority is to get a bright device that will last for several years, it is recommended to select the active option.

There are a few subwoofers like this:

For sale, the speakers are delivered ready-made. They appear folding when a transport unit is installed in the cabin. In fact, this is most typical for equipment packaged in a universal housing. Anything you want can be installed practically in any place, but during installation you may encounter some inconveniences.
Fans of clear sound may not appreciate the device. When prepared, the distributors can reach the required sizes, which are suitable for most car interiors. Ale tse be afraid of the high efficiency of the device. True materials, including a vibrating body, which are always characterized by significant ductility.

The passive type of devices is differentiated from the active type, since in no case is it possible to activate the booster, as well as the ability to adjust the frequency range. The package of such a subwoofer includes only a speaker and a housing into which it is installed. Ale and yakіst Vikonanny the rest will not be on the highest level. It is recommended to increase the speaker volume.

The number of control elements is determined by the number of tracks being played. As long as the additional electronics can provide precise results, it is possible to achieve adjustments to the sound characteristics.

The “Sundown Russia” channel has clearly improved all the characteristics, advantages and disadvantages of open and closed type acoustic devices.

Features of the location

The active type of devices may be found in any place. Before installing the passive subwoofer, add the brilliance of the created bass and music to the background.

A limited number of places are allowed for installing the speakers described in the table.

Installed	Features
At the central part of the salon, in front	This option is optimal if you need to connect the device to the front speakers. Such installation will ensure a high level of audio file creation. However, most modern cars do not have enough space in front for installing a subwoofer. This option is more relevant for light duty vehicles and minibuses
At the luggage compartment, directing the speaker itself forward	This method of establishment is popular among our spivtchizniks. Suitable for all types of cars
At the luggage compartment, but pointing the column back	A good option for cars with a hatchback body. Now this type of expansion of the sound sound when it is created does not transfer to the road. Installing a subwoofer in the rear luggage compartment is not suitable for transport vehicles such as coupes or sedan. As a result, the sound is deformed, which is due to the specific design of the compartment
Under the seat, on the underside of the car	This is a bad option if you need to grab the device, otherwise it won’t be popular among car owners. The saber itself is on the same level as the article. And as a result of installation under the chair, the sound horns sharpen the differences between the transitions to the road
In the back of the car	This placement option is optimal for all transport vehicles, regardless of the body type. The main reason for this is that the police have a wide range of activities. This way you can highlight low-frequency bass without compromising the harshness of the sound.

When choosing a place to install a subwoofer, it is necessary to create an accurate layout in order to understand how safe the low-frequency energy will be for additional devices. It is important that the resonance from the box will be installed in order to damage not only the installation site, but also other body elements, for example, cracks.

Box design

The channel "Sergey Tumanov's School of Car Audio" talks in detail about the design of boxes for automobile acoustic devices.

How to expand the volume of the body

The volume of the box is the main characteristic, which determines the sound quality of the speakers. To unravel it, you can speed it up in two ways - using special software or manually. As a utility, PZ Winisd or JBL SpeakerShop is used. Such software allows you to determine the optimal dimensions and volume of the housing for a specific model of transport unit. The programs can also create a breakdown of the dimensions of all components that are selected for collection, and according to the arrangement of these data, the device is selected.

To calculate the volumetric body, you need to calculate the formula V=H*L*A, describing the main values:

H – height of the speaker box;
L - Dovzhin to the body;
A is the height of the column itself.

Why prepare the box?

The body of the device must comply with the dynamic laws of acoustics, which ensures maximum intensity and clear sound. To produce different types of boxes, different materials are required. To ensure better sound quality and allow the device to insulate, you can use chipboard or multi-ball plywood. The main advantages of such materials include ease of processing and ease of processing. Chipboard and plywood can be used to create bright insulation.

The thickness of the material for making the subwoofer box becomes 3 cm.

How to make a sub with your own hands?

To create a self-contained acoustic device, it is necessary to determine the type of housing before preparation. There are a number of options for types of boxes.

The screen is closed

Armchair for the door of a closed subwoofer housing

To prepare the box you need chipboard, the thickness of the material becomes 2.3 cm, and for the side walls you need boards of 2 cm.

Preparation process:

From the tree, using a jigsaw, the surfaces are cut out to the dimensions that are laid out behind the chair.
The body is folded into shape. To fix storage elements, it is allowed to use superglue before using screws.
At the walls, with the help of a drill, open an opening with a diameter of 3 mm. To install the heads, it is recommended to use a 1 div drill bit.
Then, at the side station, behind the help of the compass, the markings for installing the speaker are made. Open everything and ask for help from a jigsaw.
When operating, the speaker displays frequency signals. To prevent this from happening, it is recommended to lock the terminal behind a small box. The joint area is coated with glue. The device is fixed using screws.
With a vikorist plane, you can see protrusions on the box.
Similarly, markings are made on the front part to indicate the opening for installing the column. In order for the box to be stolen from households, it is recommended to treat it with nitrovarnish. This should be applied to the inner part of the front panel.
To ensure greater practicality, the box is covered with carpet. Fixation of this material is carried out using vicoristic nitrolac.
At the final stage, the speaker is installed on the acoustic terminal and attached to the box.

Phase inverter

To remove the housing, you will need:

a ball of soundproofing material;
self-drilling for working with wood, its diameter is 5 cm;
drill with a set of drill bits;
twist with a cross tip;
jigsaw;
rare flowers;
glue sealant and PVA;
carpet;
plywood or chipboard 3 cm thick, to create the largest possible box and prevent the transmission of sound waves.

Graphic seat for making a subwoofer cabinet with a phase reflex device

The extraction procedure goes like this:

Preparation of storage parts for the hull is underway. The front and rear walls, as well as the side walls, are made from plywood or chipboard. It is necessary to dig out the upper part and the bottom. For this purpose, the layouts and parameters are selected up to the singing chair.
Once the dimensions of the column have been adjusted, an opening is cut in the front part of the frame box.
It is also necessary to make a gap above it to install the phase inverter tube. Then fix the lid until the opening for the device is opened.
The two parts of the body are glued together one by one. Don’t hesitate, if you are offended, open the door. Then the walls are fixed one by one using screws. The leather fastening element must be screwed all the way. You cannot allow empty spaces to appear between the walls, which will result in distortion of the subwoofer sound.
On the back surface of the box there is a cut-out opening through which the conductors are laid.
First, the folding parts are connected to the body and the column is installed.
Then the inner box is formed. Vikorist glue, sealant or resin, clean all joints and crevices that smell, to improve sealing. After the material is dry, the inner part of the box is covered with sound-insulating fabric.
After completion of the processing of the body, similar steps are completed from its outer part. The frame box must be covered with carpet or similar material. It is important that the fabric completely covers all the positions of the sticks, as well as the opening of the phase inverter. To fix the material, epoxy resin or a stapler is used.

Bandpass 4th order

When you create such a box, you can have mercy on the destructors, whose preparations are best dealt with by car owners, as they may have evidence for you. To design the model, the housing is recommended to use special software. The collection procedure follows exactly as described in the instructions.

Schematic illustration of a subwoofer bandpass housing

Ale required vrahovuvati nuances:

The partition, in which the stacker is mounted, is formed from two sheets of plywood or chipboard.
The internal part of the body is lined with sound-insulating material. Violating batting is allowed.
The glue itself must be applied in strokes along the entire perimeter. There is no need to analyze it too much, reducing the fragments to static characteristics.
Additional fixation of the device is allowed with the help of a stapler.
The soldering of conductors is completed to the column and terminal contacts.
The back part of the box needs to be sealed as much as possible. This can be reached with adhesive tape and rare flowers that will stick to the seam.
To create a pipe for the bass reflex device, warm up the edges. For this purpose banks are used.
To open the door, Krishtsa Vikorist uses a jigsaw. This will require installing a carpet with a phase inverter device.
The cultivation of the place is based on the selection of rare flowers.
The rear part of the cover with a phase inverter device is equipped with sound insulation. Once the fixation of the body elements is completed, it needs to be covered with carpet.

BP6

The manufacturing option for the BP6 subwoofer is foldable in terms of assembly and disassembly.

Graphic little thing for the body of the BP6 subwoofer

It allows you to see a clear sound, as a fourth-order badpass, but the frequency range is greater. The coefficient of tension of the device, as well as the tension parameters, are calculated using the software. All characteristics are selected to match those of a car vlass. In general, the design of the box is folding in a sealed box and a phase inverter.

Features of the selected device:

To create important connections, it is recommended to make them from wooden blocks, which are fixed with screws.
All components of the box must be properly sized. For preparation, plywood and chipboard are used.
The collection procedure follows similar technology. Instead of primary sound insulation, cotton wool is used.

Subwoofer "Stealth"

To prepare a case of this type you need:

the column itself;
Speaker settings;
special socket for connecting the device;
complete set of cables;
the material from which the body vibrates is plywood or chipboard, its thickness becomes less than 2 cm;
fiberboard board;
epoxy resin or glue;
fiber sheet;
penzlik;
masking tape;
polyethylene;
self-dose for robots with wood, 4 cm long;
jigsaw;
Drill with a set of drills.

Before preparing the box, it is necessary to determine the location of the subwoofer installation. You will need to collect all the tools and equipment from the luggage compartment in order to complete your checkout. Then comes the dismantling of the casing from the roof. You need to carefully remove it from the place where the subwoofer is installed.

A simple diagram with dimensions for an acoustic structure of the Stealth type

The preparation procedure goes like this:

At the place where the musical device is installed, it is necessary to lay polyethylene spit. It is possible to steal the luggage compartment from glue and debris.
The installation site for the subwoofer is glued with masking tape, for which it is recommended to use at least two balls.
Then the animal is laid out with clothes and fabrics. Then the material is coated with epoxy resin and glue. It is recommended to glue the ruffled fabric with an overlap. When victorious, it is important to work in such a way that the sticks do not become visible. No ruptures are allowed.
The rumpled fabric is glued into a bunch of balls, at least five. It is necessary to ensure that the thickness of the material becomes 1 cm.
The box itself for the acoustic extension is about fifteen years old. If the body is dry, the work will continue.
The bottom part of the box is corrugated from chipboard or plywood, just like the bottom is corrugated. Vaughn is fixed on the body of the future addition. For fastening, it is allowed to use sealant or epoxy glue to prevent the appearance of leaky seams on the body.
The box of the device will lose some important parts, they need to be removed with a stationery knife. So I can clean up the excess glue and fibers.
The side walls of the structure, as well as the roof, are made from the chipboard. It is recommended to make the rounded part of the box from plywood. The material must be immediately wetted with water, then shaped and securely fixed.
All chipboard elements are clearly glued with epoxy resin or glue and sealant. Then they need to screw together one by one, for which the screws are used.
On the front part of the box there is an opening where the acoustic speaker is mounted.
For additional drilling from behind or at the side of the station, you need to drill a small gap. Cables from the subwoofer are laid through it for connection.
A column is mounted near the box of the device. This fixation is achieved using screws or glue, and you can use both options. After collection, all storage units are installed.
At the last stage, the acoustic structure is fabricated or covered with carpet. When applying varnish or paint, all surfaces must be sanded afterwards. It’s easier to cover the box with carpet. To fix the material, use glue or a stapler with staples.

Installation and connection

When connecting the device to the acoustic system, you need to prepare:

a set of cables - three conductors run in one winding to connect the power supply to the car radio, as well as the battery;
foreign element;
capacitor device;
insulator or thermotube;
wire cutters;
plastic clamps;
set of nut wrenches.

Subwoofer cable connection map

To connect the conductors, the following scheme is used:

The cable from the subwoofer goes to the booster device. If there is a need for installation in the cabin, it is necessary to arrange the conductors through technological openings in the luggage compartment. To secure the cables, they should be laid under plastic linings. To achieve this, decorative overlays require additional screws and screws. It is not possible to lay darts in the area of body parts that are collapsing, in order to prevent them from being damaged.
Then the power cable goes to the radio. The connection output is located on the back of the audio device. The car radio will have to be dismantled, and the center console will also need to be removed.
The positive conductor of life at the time of laying needs to be protected from damage. For this purpose, it is recommended to sunbathe under the corrugation.
A foreign device is installed on the positive conductor. It is important to place it close to the battery.

Come in safely

Nuances that require attention when the device is installed and connected:

It is not allowed to leave inoperative tools or devices that are not functioning properly.
When working with prickly or sharp objects, proper safety precautions are required. Wiring on power tools is not to blame for damage. The plug for a drill or jigsaw is inserted into the socket easily and smoothly.
Before you start, you need to make sure that the car's battery is disconnected. This will prevent damage to the speaker system.

Photo gallery

Photo of self-made sabi.

Video “An example of making a subwoofer from old speakers”

The “AVTO CLASS” channel is inspired by the independent creation of an acoustic device and the rewinding of speakers released during the SRSR.

In this article, we wonder how to build a subwoofer with your own hands, without delving into the intricacies of electroacoustics, without going into complex structures and subtle figures, but you still want to make it anyway. “Without any special folding” does not mean “slap on target, drive away, grandma, mogorich.” Nowadays, on your home computer you can model even foldable acoustic systems (AS); efforts to describe the process of divas. for example. All the robot with a ready-made device from the preparation gives what you cannot deny by any reading or glance - an intuitive understanding of the essence of the process. In science and technology, writing at the tip of the pen is rarely found; Most often, the investigator, having had enough evidence, “guts” begins to understand what’s going on there, and then searches for the mathematics involved in describing the phenomenon and deducing complex engineering formulas. A lot of great people with humor and satisfaction guessed their firsts not far away. Alexander Bell, for example, cats for his first phone, trying to shake a naked dart from the beginning: Vin, a musician behind the light, just not yet knowing what is dripping under the stream, it is necessary to isolate. Ale phone Bell still vinayshov.

About computer software

Don't think that JBL SpeakerShop is anything else. The acoustics development program will show you the only possible correct option. Computer programs are written based on verified algorithms, and non-trivial solutions are impossible for only theologians. “Everyone knows that you can’t work like that. There is a yolop who knows nothing. Vіn i rob vinakhid"- Thomas Alva Edison.

SpeakerShop, having appeared suddenly, has broken down this program very thoroughly and those who are actively pursuing it are an incredible plus for both specialists and amateurs. Albeit, the current situation with him is similar to the story of the first photoshops. Anyone who has used Windows 3.11, remember? – and then we just went crazy looking at the pictures. And then it turned out that in order to take a good photo, you still need to take photographs.

What's the matter?

The subwoofer (simply - sub) in the literal translation sounds curious: pіdgavkuvach. In reality, this is not a bass (low-frequency, woofer) speaker that produces frequencies lower than approx. 150 Hz, for a special acoustically designed box (box) with a folding device. Subwoofers are found in everyday life, in high-quality subwoofers and inexpensive desktop ones, second-hand in cars, etc. rice. If you decide to create a subwoofer that properly produces bass, you can safely take on the task, because The creation of low frequencies is perhaps the largest of the pillars on which all electroacoustics are based.

The compact low-frequency speaker system is designed to be richly more important in the lower midrange and high-frequency (mid-high frequency) first, through an acoustic short circuit, if the sound waves from the front and high-profile surfaces of the speaker (Guchnomovts heads, GG) are dampened : dovzhini hvil LF - measurements, and without proper acoustic design, the GG does not have the right to immediately go into antiphase. In other words, the spectrum of low-frequency sound extends far into the most sensitive midrange region. In fact, regardless of the wide range of speakers, there is a low-frequency channel, as the midrange and high-frequency frequencies are introduced. Already, from the ergonomic point of view, there appears to be an additional benefit: the subwoofer for the wake-up box may be somewhat more compact.

Note: All types of acoustic design of LF GG can be divided into 2 great classes - one is to dampen the vibration of the dynamics, the other is to reverse its phase by 180 degrees (wrap the phase) and re-promote from the front. The subwoofer is dependent on the authorities of the GG (div. further) and the necessary type of amplitude-frequency response (AFC), perhaps due to the circuit of one or another class.

People are very sensitive to sounds below 150 Hz, so you can put a subwoofer in your first living room. MF-HF speakers (satellite) acoustics with a subwoofer are even more compact; The arrangement in the room can be selected to be optimal for the given space. Nowadays it’s too flat and the garish, damp acoustics don’t stand out, and it’s possible to “stick” it correctly in something like a pair of good, wide-skinned speakers. Therefore, making a subwoofer on your own allows you not only to save a considerable sum of money, but also to obtain a clean, true sound from this axis of the Khrushchevites, Brezhnevists or the current new generation. A particularly effective subwoofer for full-surround sound systems, because putting 5-7 columns on all dark skin is necessary and for “sophisticated” kistuvachs.

Basi

The creation of bass is as complex as it is technical. The narrow low-frequency range of the entire range of sound sounds is heterogeneous in its psychophysiological infusion and is divided into 3 areas. To correctly select a bass speaker and build a subwoofer box with your own hands, you need to know their limits:

Upper bass (UpperBass) - 80-(150 ... 200) Hz.
Mid bass or midbass (MidBass) – 40-80 Hz.
Deep bass or subbass (SubBass) – below 40 Hz.

Top

Middle

On the mid-bass, the main task is to ensure that the subwoofer is turned on - to ensure that the minimum volume of the box is used to find the output of the GG, the shape of the frequency response is set and the maximum evenness (smoothness). The frequency response at the lower frequencies is close to square-cut, giving a tight, yet harsh bass; The frequency response that falls evenly is pure and insightful, but weak. The choice of these and others depends on the character that is being heard: rockers need an “evil” sound, and for classics a lower sound. In this and other cases, large dips and splashes in the frequency response are subjectively affected by the formally new technical parameters of the sound.

Glibina

The initial influx of bass into the timbre (barrier) of the sound of musical instruments deprives the wind organs of specially appointed halls. Strong sub-bass components are characteristic of the sounds of natural and man-made disasters, strong vibrations and the voices of other types of creatures (left rick). Over 90% of people either don’t smell it or they smell it in an indecipherable way. For example, since the sounds of tropical hurricanes and nuclear vibrations are filtered out from everything else, in addition to subbass, behind them it is unlikely that anyone can figure out what really lies there. Therefore, a home subwoofer may first be optimized for mid-bass, and the excess sub-bass that results will mask the presence of noise from the room. Why is it, before speech, even adjective and why it is brown?

Bass in the car

The effect of noise masking is especially necessary in a cramped and noisy car interior, so car subwoofers are optimized for low bass. Sometimes, for those who like Hi-Fi at speed, they give the subwoofer the entire trunk, installing 15”-18” monster speakers with 150-250 W peak power, div. rice. However, you can build a completely decent subwoofer in a car without sacrificing the volume of the body, div.

Note: The peak intensity of the speaker is often attributed to noise, which is incorrect. At the peak of tension, the sound of sweating is even more pronounced. marked behind the scenes. The noise level is determined by the fact that the speaker can work for a full hour (ie 20 minutes) without overheating or mechanically breaking down. The sound is most often a voiceless wheeze, which is why such straining is called noise. However, in some types of acoustic design, the noise level of the speaker may appear lower than the peak, dividing. given.

What kind of speaker is needed?

The new development of the acoustic design is due to the so-called. Thiel-Small parameters (PTS). We decided to spend an hour and a time on adjusting the subwoofer; we only need more quality factor of the head at its high frequency resonant Qts, because It is from this that the optimal acoustic design option is selected. Depending on the Qts value, the dynamics are divided into 4 groups:

Qts<0,5 – «безразличные» сверхнизкодобротные. Очень дорогие, очень низкая отдача, но способны воспроизводить подбасы вплоть до 20-15 Гц. Настройка сабвуфера с такими без звукомерной камеры и специальной измерительной техники невозможна, т.к. резонансный пик не выражен.
0,5
0,7
Qts>1 - high quality. High output, low price, harsh sound with suboptimal design. It is important to trim a smooth frequency response. Compact, available in diameter (smaller diameter) up to 6” (155 mm). Optimal for a desktop subwoofer or for a TV (not for a home theater!).

Vimiryuvannya

In the specifications of the driver for the speakers, Qts can be designated as Qp or simply Q, but this is far from the case, but in secretly accessible databases like WinISD there are still no errors. Therefore, in all likelihood, we will have a chance to have significant significance for Qts in our households’ minds.

Preparation

We first select and prepare a room for acoustics. She has more curtains, curtains, curtains on the undersides and walls, and upholstered furniture. Hard horizontal surfaces (steels) need to be covered with a damp coating; Let's not say we'll throw more pillows. The sound field of kuti and zokrem is especially strong. hard furniture with walls that need to be hung, for example, with clothes on hangers. Next, it is connected to the speaker and suspended in the geometric center of the stele (under the chandelier, as it is) with the front side of the diffuser down at a height of 2/3 of the height of the stele.

Now you need to create a vimir scheme, as shown in Fig. We still need the lower circuit to dampen the impedance (full support) of the Z speaker. In the form of a highly developed damping circuit without a transformer, it is completely professionally accurate: in similar circuits, oh the bridge is ruined bl. 1.5 V with the input support of the tester 10 MΩ. The effect of this circuit lies in the fact that the impedance of the transformer and R2, on the one hand, is richer than the impedance of the main generator; On the other hand, there is much less output support for the strength of the audio frequency, and the worst digital multitester at the range of 200 mV may have an input support of more than 1 MOhm. However, since the dimming signal is supplied to the audio frequency generator (AFG) with a standard 600-ohm output, this circuit for dimming Z is not applicable.

Procedure

On a computer with a GZH emulation program, the simulation is supplied from the output of the sound card. It is necessary to “drive” it close to 20-100 Hz initially with a discrete value of 10 Hz. If the GG resonance is not visible, then it is not suitable for a subwoofer. Or the seller has shamelessly fooled you by selling you for 100 rubles. by the way GG priced at $200.

If the boundary of the resonant peak is determined, it will be “passed” with a discrete of 1 Hz and the frequency response will be determined. Since the GG is of high or medium quality close to the upper boundary of Qts, you will see a graph for the level of the one in pos. I fig. In this situation:

For f-le (1) to pos. II is known U(F1, F2);
Behind the graph we know F1 and F2;
According to formula (2), we verify that the frequency of the air resonance in the free space F's is calculated with the virtual Fs. If the separation is greater than 2-3 Hz, div. lower;
From formula (3) we find the mechanical quality factor Qms, then from formula (4) the electrical quality factor Qes and find, from formula (5) we find out again the quality factor Qts.

If the quality factor of the GG is close to low or if it burns well, the resonant curve will be clearly asymmetrical, and it will be flat, let’s say, pos. III, otherwise the verification according to formula (2) will not agree even with repeated changes. In this case, the graph shows the points of greatest tension, which correspond to the curved “wings” of peaks A1 and A2; Mathematically, some other approach describes the resonance curve of the function reaching a maximum. For Umax we take, as before, the value at the top of the peak, and for Umin we take the calculation of the value at the position. III new values of U(F1, F2).

System structure

Did you die? Is the speaker suitable? Don't rush to process the paperwork. First you need to select a block diagram of the entire sound system, because The electronic part can cost at least as much as a good subwoofer. The sound system with subwoofer can be activated according to one of the following. schemes, div. rice.

Note: The equalizer and low-frequency filter FINCH (rumble filter) in all circuits are turned on before the inputs of stereo channels.

Pos. 1 – system with passive filtering due to pressure. Plus, you don’t need a huge bass booster that connects to any UMZCH. The big disadvantages, first of all, are the mutual electrical transmission of the subwoofer channels in the midrange: for LC filters, in order to reduce them to a pleasant value, you need a decent case, which is almost a third of the way for purchasing their components and groshima (for 100 ruble bills). On the other hand, the output supports of the low-pass filters of the low-pass filter simultaneously create a tri-piece from the input GG dynamics, and the skin channel of the UMZCH theoretically drains a quarter of the tension in order to heat the vessel from its low-pass filter. In truth – more, because on the pressure and waste of the filters. Tim no less, the system with filtered tightness stagnates in subwoofers of low tension with independent sound effects, marvelous.

Pos. 2 - passive filtering to the osremy bass UMZCH. There is no loss of tension, the interaction of channels is weak, because characteristic filter supports are kilos and tens of kilos. Nina doesn’t get too upset because... Selecting an active filter on microcircuits is much simpler and cheaper, without winding passive coils.

Pos. 3 – active analog filtering. The channel signals are formed by a simple resistor adder, go to the active analog low-pass filter, and then to the bass UMZCH. The interconnection of channels is scanty and in most cases the listening experience is insignificant, and the costs for components are small. The optimal circuit for a self-powered subwoofer for a hobbyist.

Pos. 4 – external digital filtering. The channel signals are fed to the device P, which divides them into at least 2 equal output signals. One signal per pair is fed to the MF-HF UMZCH (possibly, directly, without a high-pass filter), and the others are combined in sumator C. On the right, with a resistor added at lower frequencies, the mid-bass and sub-bass can have electrical interaction signals at the low-pass filter , the kilka creates a dark bass sound. The sumator combines signals digitally or analoguely, which prevents their interaction.

From the sumator, the background signal is fed to the digital low-pass filter using analog-to-digital (ADC) and digital-to-analog (DAC) converters, and from there to the bass UMZCH. The clarity of sound and the separation of channels are the maximum possible today. Spending on microcircuits for this state appears to be feasible, but the work with IMC also attracts a certain radio amateur's knowledge, and even more - because you do not buy a ready-made set (which is much more expensive), and the system components are selected independently.

Design

In Fig. The most suitable acoustic design schemes for home subwoofers are given. Labyrinths, mouthpiece and in. not satisfied with its compactness. The green ones see the schemes that are important for the cobs, we wait for them, and the red ones are unattainable. Whoever is up to date, can you be surprised: the 6th bandpass is for dummies? It’s okay, this wonderful bass acoustics on the pipes can be adjusted over the weekend. Yakshcho nobility yak.

Shield

The design of the subwoofer as an acoustic screen (shield, item 1) in home units can be done if the GG is embedded in the wall cladding, because Their dimensions can be equal to the lengths of subbass horns. This year comes with a variety of everyday problems and the dynamics of its burden. Otherwise, it is extremely compact and does not take up space. But there are serious disadvantages. The first one is a great duty of everyday work. Another thing is that the acoustic screen does not contribute at all to the frequency response of the RR. “Humpbacked” - that’s how we sing, it can be put on the shield without expensive low-quality and bad dynamics. Subminus, so be sure - their output is small and the shield is not built up.

The screen is closed

The great advantage of a closed box (item 2) is the increased damping of the GG; For inexpensive, high-performance, high-quality speakers, this is a uniformly pleasant type of acoustic design. This is a plus and minus: with deep noise damping, the tension of the GG is often lower than the peak, especially with expensive tight heads. The cat is already smoking, but he’s still barely wheezing. An overvoltage indicator is required, otherwise the signal can be detected in the simplest way without power supply.

No less a big plus - an extremely smooth, smoothly falling frequency response and as a result - the purest and most vibrant sound. Therefore, high-quality heavy duty GGs of high quality factor are produced especially for installation in closed boxes or 4th order bandpasses (div. further).

Minus - of all speakers, the closed box has a lower frequency that appears, because It moves the resonant frequency of the speaker and does not push its output at frequencies below it. Tobto. Due to its compactness, it would be a great stretch to fit a subwoofer into a closed box. This little bit can be changed by filling the box with synthetic padding: it significantly absorbs the energy of sound notes. The thermodynamic process in the box then changes from adiabatic to isothermal, which means an increase in its volume by 1.4 times.

Another shortcoming is that a closed box may not have a passive subwoofer, because The electronics are very hot and are placed near the gates of the buildings. If you want to clean the old AC 10MAS-1M, wash them at half strength from scratch and touch the body - it will be warm.

ФІ

Note: in all cases, FI is a passive viprominuvach (PI) - instead of a pipe with a port, install a bass speaker without a magnetic system and with a weight instead of a coil. There are no “unsophisticated” methods for agricultural development, so industrial production has a lot of rare wines. If you have a bass speaker lying around that has burned out, you can experiment - adjusting it will change your taste. If you please, it is better for the active ones not to work for the same reason as the closed box.

About deep crevices

Acoustics with deep crevices (pos. 4, 6, 8-10) are either FI or labyrinth, but are actually an independent type of acoustic design. Transfer at the deep end of the masa:

There is only one small hole in the deep hole, and then for the cobs: it is not adjusted after harvesting. As it is broken, so we sleep.

About anti-acoustics

Bandpassi

BandPass at the translation pass through the smugi, so they call the speakers without direct propagation of the sound into space. This means that speakers of the bandpass type do not compromise the midrange due to the internal acoustic filtering: place the speaker at the partition between the resonant voids, the ports of pipes or deep crevices that receive the atmosphere. Bandpass is an acoustic design that is specific to subwoofers and does not interfere with separate speakers.

Bandpasses are divided by order of magnitude, and the order of bandpasses is equal to the number of its resonant frequencies. High-quality GG should be placed at the 4th order bandpass, so it is easy to organize acoustic damping (position 5); low- and medium-quality – for the bandpass of the 6th order. There is no noticeable difference between the sound between these and those, compared to the wider cross-channel: even at the 4th order, the frequency response at low frequencies can be smoothed out to 2 dB or less. The difference between them for the amateur is mainly in the ease of adjustment: in order to accurately adjust 4 bandpasses (div. distance), the partition may collapse. Since there are 8th order bandpasses, they have 2 more resonant frequencies as a result of the acoustic interaction of the same 2 resonators. Therefore, 8 bandpasses are sometimes called bandpasses of the 6th order class B.

Note: The idealized frequency response at low frequencies for various types of acoustic design is shown in Fig. chervony. Green dotted line – ideal frequency response from the point of view of psychophysiology and hearing. It is clear that the work in electroacoustic systems is still increasing and increasing.

Amplitude-frequency characteristics of one and the same head with different acoustic design

Autosubwoofer

Car subwoofers should be installed in the rear seat, either under the seat water or behind the back of the rear seat, pos. 1-3 in Fig. For the first passenger, the box takes away the brown volume, for the other, the subwoofer is working in important minds and may cause shaky legs, for the third, not every passenger can tolerate the tight bass and sound.

Nowadays, the car subwoofer is increasingly producing the stealth type, introduced in the niche of the rear fender, pos. 4 and 5. Sufficient tension is achieved through special autodynamics with a diameter of 12” with a rigid diffuser, which is not very similar to the membrane effect, pos. 5. How to make a subwoofer for a car using a molded niche, div. video.

Video: DIY car subbuffer "stealth"

It just doesn’t get any simpler

Even a simple subwoofer, which does not require much bass boost, can be built using a circuit with independent sound boosters (ІЗ), div. rice. In fact, there are two channel LF GGs, placed in a long casing that is installed horizontally. Since the same box can be aligned with the space between the satellites or the width of the TV screen, the “spreading” of the stereo is not noticeable. Since listening is accompanied by looking, it is completely unnoticeable that there is a fleeting visual correction of the localization of the sound.

Using the independent circuit, you can create a stand-alone subwoofer for a computer: the box with the speakers is placed at the far upper corner under the stand. The empty space below it is a resonator, tuned to a very low frequency, and an unpleasantly good subbass emerges from the small box.

FI for a subwoofer with independent Z can be purchased at the speaker shop. In this case, the equivalent volume Vts is taken to be twice as large as the actual one, the resonant frequency Fs is 1.4 times lower, and the quality factor Qts is 1.4 times higher. The material of the box, as well as everywhere else, is MDF 18 mm; for subwoofer power 50 W – 24 mm. Alternatively, it is better to place the speakers in a closed box, which in this case can be done without unpacking: at the same time, take the installation site at intervals of 0.5 m (for a computer) to 1.5 m (for a large TV). The cross section of the box in the middle is determined based on the diameter of the speaker diffuser:

6” (155 mm) – 200x200 mm.
8” (205 mm) – 250x250 mm.
10” (255 mm) – 300x300 mm.
12” (305 mm) – 350x350 mm.

In the largest version (under-mounted computer sub with 6” speakers), the volume of the box will be 20 liters, and the equivalent one with filling will be 33-34 liters. For UMZCH pressure up to 25-30 W per channel, turn it up to get a decent mid-bass.

Filter

LC filters in this case are better than type K filters. They require more filters, but in amateur minds there is no network. K-filters have a slight attenuation in the smoothie without transmission, 6 dB/oct per lane or 3 dB/oct per lane, but then the phase response is absolutely linear. In addition, when working with a voltage source (which is used with great precision by the UMZCH), the K-filter is not very sensitive to changes in the vantage impedance.

At pos. 1 pic. given circuit diagrams of K-filter channels and diversified formulas for them. R for the low-frequency GG is taken to be equal to the impedance Z at the frequency of the low-pass filter of 150 Hz, and for the high-pass filter to be equal to the impedance of the satellite z at the frequency of the high-pass filter of 185 Hz (formula in position 6). Z and z are indicated by the diagram and formula in Fig. more (with schemes of vimirs). The working filter circuits are pointed at pos. 2. If you prefer to buy more capacitors rather than wind the coils, then the parameters themselves can be folded from P-lanks and overlays.

Data and circuits for preparing filters for a simple subwoofer with independent components

The low-pass filter of the smoothie is 18 dB/oct, and the high-pass filter is 24 dB/oct. This is a very unusual relationship because satellites are favored by low frequencies and produce cleaner sound, while the excess low frequencies added to the high-frequency filter spill onto the low-frequency speakers and produce deeper bass.

To ensure that the filter coil is unzipped, it is pointed at pos. 3. It is necessary to separate them mutually perpendicularly, so that K-filters operate without magnetic coupling between the coils. When designing, the size of the coil is determined and the inductance found in the order of designing the filter is determined by the number of turns. Then, using the additional installation coefficient, determine the diameter of the hole in the insulation, you must be no less than 0.7 mm. Taking less means increasing the size of the cat and over-indulging.

Setting up

The adjustment of this subwoofer is limited to adjusting the volume of the bass speakers and satellites accordingly. frequencies immediately. For this purpose, first prepare the room before acoustic adjustments, as described above, use a tester with a bridge and a transformer. Next you will need a condenser microphone. For a computer, you will have to create some kind of microphone booster (ISS) with displacement applied to the capsule, because The primary sound card is unable to immediately receive the signal and operate the frequency generator, pos. 4. If you find a condenser microphone with a built-in MUS, or an old MKE-101, its output should be connected directly to the primary (minor) winding of the transformer. The vimiryuvan procedure is complicated:

The microphone is mounted opposite the geometric center of the satellites at a horizontal distance of 1-1.5 m.
Connect the subwoofer to the UMZCH and supply a 185 Hz signal.
Record the voltmeter readings.
Without changing anything in the room, turn on the satellites, turn on the sub.
Apply a 150 Hz signal to the UMZCH and record the tester readings.

Now you need to open up the resistors to turn them on. Verify the strength, muffling the grooves behind the serial-parallel circuit (item 5), because It is necessary to keep unchanged the values of Z and z found before the module. Rozrakhunkov's formulas for resistors are given in pos. 6. Tightness Rg - not less than 0.03 compared to the tightness of the UMZCH; Rd - be it 0.5 W.

It's just

Another option for a simple, but also true subwoofer is a paired low-frequency MR. Pairing woofers is a very effective way to improve the quality of their sound. The design of the subwoofer based on the old 10GD-30 is shown in Fig. lower.

The design is very thorough, the bandpass is of the 6th order. Bass booster – on TDA1562. You can use other high-quality generators with a relatively small diffuser stroke, and you may have to work on adjusting the selection of more pipes. It vibrates at the control frequencies of 63 and 100 Hz. rank (control frequencies are not resonant acoustic system!):

Prepare the room, set up the microphone, as described above.
Apply to the UMZCH at 63 and 100 Hz.
Change even pipes, resulting in a difference in the voltmeter reading of a little more than 3 dB (1.4 times). For gourmets – no more than 2 dB (1.26 times).

The adjustment of the resonators is mutual, so the pipes need to be collapsed at once: by hanging the short one, on the stools, in proportion to the end of the day, by sticking the long one. Otherwise, you can completely confuse the system: the optimal setup for the 6th bandpass is even worse.

A dip between 63 and 100 Hz means the partition will need to be destroyed at the larger resonator.
Failures on both sides of 100 Hz - the partition is destroyed at the side of the smaller resonator.
Splash closer to 63 Hz - it is necessary to increase the diameter of the long pipe by 5-10%
The splash is closer to 100 Hz - the same, but not for a short pipe.

After any adjustment procedures, the subwoofer must be re-adjusted. To make it easier to handle, do not tear the surface folded on the glue: cover the partition thoroughly with plasticine, and place one of the side walls on double-sided tape. Make sure there are no gaps!

Pipes for resonators

Ready-made pipe parts for acoustics are sold in music and radio stores. You can make a telescopic acoustic pipe with your own hands from scraps of plastic or cardboard pipes. In this case, across the inner throat, you need to carefully glue 2 sections of hair: one is pulled in, the other comes out as a loop, div. rice. right-handed If the pipe needs to be pulled out, pressed into a tight hair with olivum, etc. To shorten it - pull the loop. Setting up a resonator with a pipe in this way is quick to do many times.

Pushing 6th order

The seat for the bandpass of the 6th order under 12” GG is given in Fig. This is already a solid design for a power supply up to 100 W. It is adjusted as before.

Subwoofer armchair bandpass 6th order under 12″ speaker

4th order

Raptom, your order is to have a 12” high-quality GG, on it you can build a 4th order bandpass of the same brilliance, or compact, div. rice; Divine size However, it will be much easier to set it up, because Instead of manipulating the pipe of a larger resonator, the partition will immediately collapse.

6th order bandpass subwoofer for 12″ speakers

Electronics

Before the bass UMZCH for the subwoofer there are the same ones as before the filters, allowing for a new linear phase response. They are satisfied with the UMZCH, Vikonani behind Brookevka, and it reduces by an order of magnitude the nonlinear development of integral UMZCHs with a non-complementary output. UMZCH for a subwoofer with a power of up to 30 W can be selected according to the diagram, pos. 1 rice; 60-watt for the circuit on pos. 2. The active subwoofer can be operated manually on one microcircuit of the 4-channel UMZCH TDA7385: a couple of channels are sent to the satellites, and two others are connected behind the bridge circuit to the sub, or, if not connected to independent IZs, they are sent to the bass speakers. TDA7385 is manual and therefore for all 4 channels it has additional inputs with St-By and Mute functions.

Behind the diagram, pos. 3 get a good active subwoofer filter. The strength of this boost, which is normal, is regulated by a 100 kOhm changeable resistor over a wide range, so in most cases the tedious procedure of verifying the strength of the subwoofer and satellites ends up. In this option, satellites are switched on without a high-pass filter, and the midrange-high frequency boosters are equipped with potentiometers for resetting the tension with the screw slots.

You may want to build a long-range sub from scratch rather than bother with re-adjusting prototype subwoofers for your speaker. In this case, go through the following message: //cxem.net/sound/dinamics/dinamic98.php. The author, we need you to carefully explain how to open and build a high-quality subwoofer with the help of current software. However, the great right is not without a mistake;

And yet...

Create a subwoofer yourself on the right hand side, it is useful for the development of intelligence and mastery, and a good bass speaker costs again and again cheaper than a lower class. However, at control auditions, both experts and random listeners “from the street” for other equal minds clearly give preference to sound systems with a higher level of channels. So think about it for the first time: why won’t you end up with a handful of separate speakers?

The real music lover doesn't like hearing music through standard computer pads. A good acoustic system should be vibrated in a way that is particularly similar. Such satisfaction does not come cheap, in addition, there are sometimes difficulties in selecting columns of required parameters. In this case, you can prepare an acoustic system with your own hands. Our article will look at how to create a subwoofer from a primary speaker.

What is a subwoofer?

Subwoofer is made up of two words - SUB and WOOFER, which is literally translated "subwoofer" and means - an acoustic system designed to produce sounds at low frequencies, for example, from 20 to 100 Hz. Koristuvachs are widely respected for being called “bass column”.

Subwoofers are divided into two types:

Active subwoofer - there is a power supply unit near the speaker body.
Passive subwoofer – new external booster.

Vibrator dynamics

In order to select a speaker, you need to consider the dimensions; you can create a chair to help create a new speaker. On the current market there are the following models:

Speakers that generate a 6-inch buffer are designed to serve as an additional source of mid-bass. The fact that such speakers are hidden behind the depth of sound creates a modest device that is suitable for a small salon with an average speaker system.
The speakers that support the 8-inch subwoofer are used for additional front bass.
The ideal speakers for a car subwoofer are speakers that are 10 inches or larger. The stench is clearly heard and fills the space with intense and receptive vibration of sound. The speakers are placed in a closed compact housing, or so called a closed box, which ensures good sound output. The best option for the car is a 12-inch speaker, which can be installed in a box with a volume of up to 35 liters.
15-inch speakers are a real option for great car interiors. In this case, the box for the speaker, which has a given diameter, must take up about 90 liters and take up the entire luggage compartment. In addition, with such dynamics, you can go a little deaf, so this option is of little use in life.

Important! It is necessary to rely on support, since the sound is very low at 1-2 ohms. The optimal support for a subwoofer speaker is 2 to 4 ohms.

Given the tightness of the dynamics, it is definitely difficult to make decisions. There is only one rule, which is that the tension of the speaker is responsible for the greater tension of the booster. Typically, the speaker can function for a long time at a limiting degree of tension, which is due to the “stock of reserves”.

Important! It’s not long before moviegoers experience a sound that resembles a home movie theater. This problem can easily be solved with the help of additional tools. Press on the message to find out.

If you already use both the speaker and the subwoofer, you need to notice the difference and set the boost controls to the maximum allowable volume for the subwoofer. The same speaker cannot maintain the vibrancy of the sound at maximum volume.

Important! After about an hour (sometimes this situation can happen immediately) the imbalance begins to hurt the ears.

How to build a subwoofer for a computer?

Making your own subwoofer involves a number of stages:

selection of materials;
design of the body;
selecting a subwoofer.

Let's take a closer look at all these stages.

Important! To make it easier for you to decide on the choice of suppliers, to increase respect for our already prepared ones.

Selection of materials

How to build a subwoofer in your home? To begin with, all work depends on the scheme and the selection of the necessary materials for the manufacture of the body. In order to make a subwoofer with your own hands, you need to add:

speaker - selected according to your needs;
plugs - connect the connected speaker before heating, it is best to avoid the connectors of the device;
droti - serve to connect a subwoofer;
plywood with a rich ball base;
cutting a plumbing pipe;
self-tapping screws for wood, which can be found in sizes up to 50 mm;
wooden blocks that make different cuts, which can be 20x20 mm or more;
silicone sealant;
hard foam rubber or else;
PVA glue;
farbi.

Prepared necessary materials, collection instructions and necessary tools:

a hacksaw for wood, as small as it has small teeth;
chisel;
electric drill;
sawdust;
jigsaw;
compass;
Primary olive;
slide ruler;
screwdriver;
twist;
emery paper - rough to scratch.

Housing design

Let's start designing the housing of the new subwoofer. For this purpose, the computer and speaker serve as the “heart” of the subwoofer.

Important! It is important to review all the technical characteristics of the speaker. They show the highest quality factor, resonance frequency in the open space and equivalent service. All the meanings are in the passport data.

We are installing a special program on the computer. We add dynamics to the software product. Based on these values, the program will determine the optimal dimensions of the subwoofer box for you.

Important! The WinISD 0.44 program is designed to design a 4-video subwoofer. The most optimal box that can work with maximum efficiency is the bandpass. The speaker of such a device is attached to a bridge located in the middle of the box. The Danish subwoofer is equipped with two cameras and two phase inverters. To prepare a phase inverter, you can freeze a cut plumbing pipe. The program is designed to open the dove yourself, and then set the diameter value.

Now let's get down to designing the subwoofer box itself. All these steps should be carried out slowly, as the slightest inaccuracy in the results can lead to problems, and the whole work will have to be started again.

Subwoofer selection

First of all, before assembling the subwoofer, you need to remove the box. How to make a subwoofer for your home with your own hands:

Having dried the ruler and the olive, we trace the contours of the future box on a sheet of plywood.
We open the plywood sheet using a hacksaw or jigsaw and use a speed regulator.

Important! Sawing thoroughly, without rushing, the fragments of the plywood may become loose when rushed, which could negatively affect the sound of the subwoofer.

To ensure that all edges are perfectly smooth and even, they must be carefully cleaned with a file and sandpaper.
The walls of the subwoofer are held together by bars, so you need to add the necessary amount of bars.
There is an opening under the speaker. The speaker is located in the middle of the subwoofer.
At the junction between the chambers there is a circle of compasses, which has a larger diameter and lower diffuser dynamics.
The edges of the fabric are perfectly even and smooth, for which they are cleaned with a file and sandpaper.

Important! Before the hour of sanding, trim the trace under a small pile to remove the looseness of the plywood.

The walls of the subwoofer are attached to the additional bars, and then the final output of the bars is measured.

Important! The program indicates the place where to open two doors - they are used for phase inverters.

We solder the necessary parts to the speaker. The location for fastening the wires can be found in the instructions for the speaker.
The speaker is applied to the opening. We need to make a mark for fastening the speaker to the sheet, firmly.

Important! It is best to secure the speaker with special double-sided nuts, as used in furniture making.

Now let's start assembling the subwoofer housing. How to build a subwoofer for a computer? In the drill, a drill is inserted, the diameter of which is due to being twice as small, the lower diameter of the self-tapping screws that are screwed in.
We begin to drill at these points in order to secure the wall to other walls and bars.
Now we quickly apply glue. Apply glue to the points on the bars and walls using a white ball. It combines two functions - increasing the value of the body and sealing the sticks.
Self-tapping joints connect the walls. We screw them in all the way, since the structural integrity of the subwoofer body is critical. Kuti may be jealous.
We attach the speaker. The speaker and walls need to be coated with sealant.
We drill the exit hole through which the dart passes.
We pull it through the hole and seal the hole with sealant.
Next we move on to soundproofing. The inner part of the housing needs to be covered with sound-absorbing material, which will absorb the “softness” of the subwoofer bass. The presence of such material changes the pressure on the walls.
Firmly secure the back wall.

In principle, the design of the subwoofer is ready. The last step is to check the collection capacity. Turn on the music and check that there are no extraneous sounds or noises.

Important! If you want to give your wood a beautiful look, then the plywood can be coated in a variety of colors or covered with fabric.

How to make a subwoofer for a car?

Let's look at how to independently build a car subwoofer for your steel friend from basic speakers.

Materials and tools for robots

For which it is necessary to prepare the following materials:

speaker - it’s not good to use devices that have been frozen, it’s best to add a clear vibration with all the documents in the store;
zahisni grati;
solid glue – most commonly epoxy;
socket that accepts the connection;
scrappy cloth;
a wire with a diameter of 3 mm;
penzlik;
plywood;
chipboard sheet, the thickness of which is 16 mm;
self-tapping screws and nuts that are used in the woodworking industry;
chat;
polyethylene;
universal putty;
masking tape.

For work we need the following tools:

drill or screwdriver;
jigsaw for wood.

Bathroom design

How to build a subwoofer from primary speakers with your own hands:

We select a clear speaker. The greater the pressure in the new one, the louder the sound will be.
Let's move on to designing the subwoofer box - similarly, you can quickly use special software. Since we will be a subwoofer for a car, we will need a box with the most advanced CCD, or what is also called a 6th level bandpass.

Important! The bandpass of the sixth level looks like a cubic object of rectangular shape, in the middle of which there is one jumper. Our speaker is fixed on it. In addition, such a bandpass has two openings, which requires the installation of phase reflex cameras. Depending on the number of chambers, different tubes can be used. For example, tubes made of metal, polyethylene or just paper are completely suitable.

It is very important that the body is completely sealed. For this purpose it is necessary to use foam rubber or cotton wool. The ball of sealant in the middle is about two centimeters wide.
The performance of the subwoofer is largely due to its significant design and high importance on the stick. Therefore, we put the ball in foam rubber and further strengthen the design.

Important! The computer utility WinlSD 0.44 helps you correctly prepare all dimensions. Based on the capabilities of the dynamics, it will develop the optimal values for your body. Your assignments need to be clearly and correctly integrated into the reality of the given numbers. The sound always brings out everything. Come out clean and good.

Place for subwoofer

Now we need to know the place of our subwoofer. The best option is to install it in the wing, and the axis to the right or left is up to you. Some cars have a special configuration on the right wing, and there is more space for installing a subwoofer.

Important! When choosing a middle speaker, a minimum of 28 liters of volume is required for normal operation. The configuration and volume of the box itself is great, but not so important.

How to make a subwoofer for a car at home:

The trunk is lined with polyethylene sheeting, then the trim is covered with masking tape around two layers.
The woven fabric is cut into strips measuring 200×200.
Reducible epoxy glue. For what purpose do you use a jar of resin and a jar of hardener?

Important! If you take more than the norm in one of the above-mentioned ingredients, the glue will become very thick and you will not be able to work with it clearly. The ideal relationship is 1:1.

We coat the cut pieces with epoxy glue and place them overlapping on the tape.
The back wall of a self-made subwoofer is covered with wrinkled fabric. For this you need to lay three or more balls on the material.
By stretching, let the virob dry out completely.
The next day we take off the scarl. This year you will need to increase your posture with a trunk.
Now we proceed to the bottom of the subwoofer, the top of which is prepared in the shape of loops.
The front wall is attached with screws.
Coat the sticks with epoxy glue.

Working hard

After the body of a self-powered subwoofer has been designed, it is necessary to prepare it for the acoustic terminal or speaker. On one of the walls, which is located on the side, it is necessary to mark the point of the next opening. You can earn money by stagnating the basic school compass.

Important! A subwoofer for a car produces a loud sound when it is screened with a small box. This is no longer the area of self-design of subwoofers, but a real option for art. In this way, there are various sounds that can be heard through the structure of the acoustic terminal.

How to make a car subwoofer that is complete and looks and sounds perfect:

We fill the previously prepared square-shaped box with PVA glue, screw it with screws to the side, where the opening is made.
Now we tighten the plane, which cuts all the protruding edges of the body.

Important! In addition to the most advanced skills, which are due to the mastery of a carpenter, otherwise you will not be able to cope with such tasks.

In the middle of our box there is a break. Next, using an electric jigsaw, you will see an opening on the front panel.
In this place a speaker is installed, which is secured using screws and glue.

Come in zakhistu

Once everything is ready, there is no need to rush and immediately connect the cooking equipment yourself. The product must be protected from condensation and water. Vologa is similar to wood, and in our creation there is a thin sheet of chipboard.

To ensure that the body is protected, its traces should be soaked with a special nitro-varnish, which is used in the furniture industry. In addition, it is necessary to seep through the inner part of the front panel.

Building a subwoofer from a primary speaker is not a task for an amateur. Here you will need a variety of knowledge and considerations, but if you have a smell, you will need to create an ideal acoustic system at the same time, which means that everything is in your hands. Here's to success!

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