We assemble a subwoofer with our own hands!

I spent the next week calculating the subwoofer. I downloaded several programs for calculating subwoofer enclosures (DLSBox2000, JBL-Speakershop, WinISD...) I liked the DLSBox2000 program most of all. With her help I calculated the sub. And this is what happened - the efficiency of this design (FI) for my speaker is 76%, volume - 37 lire (external dimensions 45x35x35cm), bass reflex 75x100mm. (diameter/length).

Then I drew a sketch on paper and began making it.

I screwed all the walls together with 50mm long screws. All connections are made with PVA glue (advice – don’t waste the glue, the excess will squeeze out). Inside, for greater reliability, I coated the seams with silicone sealant. In principle, this is not necessary, but it’s better to miss and forget than to take it apart again later.

Next I started puttingty. I used two-component automotive putty (you can make putty yourself by mixing small sawdust and PVA glue, as an option). Once the putty was dry, I sanded the body until it was almost perfectly flat.

Then I cut out holes for the bass reflex, socket, and pocket handles.

Let's assemble the subwoofer to see how it sounds.

All my doubts about the correct calculation of the volume of the box were instantly dispelled - the homemade subwoofer played soft, even bass. Having made sure that nothing was whistling anywhere, I removed the “accessories” and began to cover the case with self-adhesive paper with a leather texture. Collected.

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

Total about 1800 rubles.


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Comments (11)
  1. Gold Silk
    #1 Gold Silk Guests April 1, 2011 00:32
    2
    What about the amplifier?? After all, it won’t work without an amplifier!
  2. NOTFRONT
    #2 NOTFRONT Guests April 1, 2011 06:46
    2
    Of course it won't. What does this have to do with the amplifier? The article tells and shows how to make a subwoofer and not an amplifier.
  3. Gold Silk
    #3 Gold Silk Guests 1 April 2011 14:09
    3
    I wanted to know what kind of amplifier is needed here! And approximately how much will it cost to connect it to the computer via a 12-volt generator?
  4. NOTFRONT
    #4 NOTFRONT Guests 1 April 2011 14:16
    1
    Great question!!! I do not know what to answer! biggrinbiggrinbiggrinsmilebiggrinsmile
  5. serdj95
    #5 serdj95 Guests 3 April 2011 15:28
    0
    I'm also wondering: what kind of amplifier is needed?
  6. NOTFRONT
    #6 NOTFRONT Guests 3 April 2011 15:51
    0
    If the speaker power is 350 W (this is the peak power), then the nominal power of the speaker is somewhere around 40-60 watts. The dynamic head, according to the rule, should be 1.5-2 times more powerful than the amplifier. That is, we will need an amplifier with a power of 25-30 watts for the speaker impedance.
  7. NEON
    #7 NEON Guests 17 June 2012 19:15
    2
    where do they sell amps?
  8. Veent
    #8 Veent Guests 2 July 2012 17:09
    0
    NEON,
    In electronics stores. It's easier to do it yourself. Because pure amplifiers (without speakers) are sold mainly only for cars. And you need to select a powerful power supply for them if you install them in an apartment.
  9. LOKY
    #9 LOKY Guests 8 August 2014 13:00
    3
    The inside of the subwoofer box had to be covered with synthetic padding polyester or holofiber or Thinsulate, otherwise the sound would be “crooked” and not have the feeling of soft bass.
  10. Dmitriy
    #10 Dmitriy Guests 20 January 2017 15:58
    0
    Can you tell me if there is a program for calculating a horn subwoofer?