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Tweakers' Asylum Tweaks for systems, rooms and Do It Yourself (DIY) help. FAQ. |
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Tweakers' Asylum Tweaks for systems, rooms and Do It Yourself (DIY) help. FAQ. |
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In Reply to: passive sub-woofer and crossover design... posted by agnostic on February 14, 2004 at 07:00:45:
Ah takes me back a bit,need a quick fix!what can I do,with what I've got?I would build a box to house the 10's,how much timber you got?2 seperate boxes would be better,than you've got stereo if you place them below your main speakers.Do you mess around with electronics?Can you make a pair of basic crossovers?ie coil and capacitor.If yes then wire a coil,straight from your amp+ to a coil then to a 10"+,then wire the cap straight across the 10"+ - terminals.Crossovers from old loudspeakers are good for parts.Basicaly you're creating a low pass for the 10"s and then insert a cap appx 47uf in series with the bookshelfs similar to the way some tweeters are wired this will attenuate the bass going through your bookshelf speaker.The amp shouldn't mind about impedance because the 47uf blocks bass so no power is used at 4ohms.Anyway you only need to feel to find if your amps cooking.I've used this technique and I've never fried an amp.If you stick 2 drivers in a single box put one driver on the front and the other on a side the top or bottom(with feet)This will give extra output if placed in a corner.1 driver fires down side wall reinforced by the backwall,the other fires from the back wall down the side wall.Or 1 fires into the room the other at the ceiling or fires at the floor raised by 2 inches and will spread sound across the floor.By changing the cap wired across + - terminals (try 100uf-to start,then go higher in value toward 1000uf)to help tune lower.Use a good size box(12" cube)make it strong then make sure it doesn't leak air.Wonky with a saw?You can allways use car body filler to fill the gaps or add P.V.A glue to ordinary indoors filler,it makes the filler harder.Think about it and let me know if your stuck.
mikee55
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Follow Ups
- Re: passive sub-woofer and crossover design... - mikee55 07:37:18 02/14/04 (2)
- Re: passive sub-woofer and crossover design... - agnostic 10:29:06 02/14/04 (1)
- Re: passive sub-woofer and crossover design... - mikee55 15:52:35 02/15/04 (0)
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