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» » »Putting a do-it-yourself subwoofer!

The following week he devoted to calculating the subwoofer. I downloaded several programs for calculating the subwoofer enclosures (DLSBox2000, JBL-Speakershop, WinISD ...) Most of all I liked the DLSBox2000 program. With its help, and calculated the sub. And here's what happened - the efficiency of this design (FI) for my speaker is 76%, the volume is 37 liras (external dimensions 45x35x35cm.), The bass reflex is 75x100mm. (diameter / length).

Then he drew a sketch on paper, and began its production.

He twisted all the walls with screws 50 mm long. All compounds are seated on PVA glue (advice - no need to regret the glue, it will squeeze out too much). Inside for greater reliability, the seams were coated with silicone sealant. In principle, this is not necessary, but it is better to miss and forget than then disassemble again.

Then proceeded to putty. Putty was used automotive, two-component (You can make putty yourself, by mixing small sawdust of wood and PVA glue, as an option). When the putty was dry, I polished the body to an almost perfect plane.

Then he cut out holes for the bass reflex, socket, under the handle-pockets.

Putting a subwoofer in order to see how it sounds.

All my doubts about the correctness of the calculation of the box volume were dispelled in an instant - the self-made subwoofer played soft smooth bass. After making sure that nothing whistles anywhere, I took off the “fittings” and proceeded to pasting the case with self-adhesive paper with a leather texture. Collected.

Subwoofer manufacturing costs:
Woofer Semtoni 10 ”(25 cm) 350w (rms, max) - 1100 rubles.
Chipboard 20mm. - free, found in the attic
PVA glue - free, already in stock
50mm screws. 100 pieces. - 26 rubles
Silicone sealant, transparent - 59 rubles
Sealant gun - 40 rubles
Socket with terminals - 65 rubles
Acoustic wire 1m. - 60 rubles
Phase inverter 75x100mm. - 40 rubles
Handles "Pockets" 2pcs. - 100 rubles

Total about 1800 rubles.

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Comments (10)
  1. Gold-silk
    #1 Gold-silk Guests April 1, 2011 00:32
    But what about the amplifier ?? because without an amplifier it will not work!
    #2 NOTFRONT Guests April 1, 2011 06:46
    Of course not. And where does the amplifier? The article tells and shows how to make a subwoofer and not an amplifier.
  3. Gold-silk
    #3 Gold-silk Guests April 1, 2011 14:09
    I wanted to know what kind of amplifier is needed here! And how much will it cost and will it be connected to the computer through a 12-volt generator?
    #4 NOTFRONT Guests April 1, 2011 14:16
    Great question !!! I do not know what to answer! biggrinbiggrinbiggrinsmilebiggrinsmile
  5. serdj95
    #5 serdj95 Guests April 3, 2011 15:28
    I also wonder: what kind of amp is needed?
    #6 NOTFRONT Guests April 3, 2011 15:51
    If the speaker power is 350 W (this is peak power), then the rated speaker power is somewhere around 40-60 watts. The dynamic head, as a rule, should be more powerful than the amplifier 1.5-2 times.That is, we will need an amplifier with a power of 25-30 watts, for the resistance of the speaker.
  7. NEON
    #7 NEON Guests June 17, 2012 19:15
    where do the amps sell?
  8. Veent
    #8 Veent Guests July 2, 2012 5:09 PM
    [b] NEON [/ b],
    In electronics stores. Easier to do it yourself. Because pure amps (without speakers) are sold mainly for cars only. And they need to pick up a powerful PSU if put in an apartment.
  9. LOKY
    #9 LOKY Guests August 8, 2014 13:00
    It was necessary to cover the inside of the subwoofer box with a sintepon or holofiber or tinsulate, otherwise the sound will be “crooked” and there will be no feeling of soft bass.
  10. Dmitry
    #10 Dmitry Guests January 20, 2017 15:58
    Do not tell me if there is a program for calculating the horn subwoofer?

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