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Forum topic by christhetalentedone posted 06-17-2010 08:31 AM 931 views 0 times favorited 2 replies Add to Favorites Watch
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christhetalentedone

30 posts in 2979 days


06-17-2010 08:31 AM

so i don’t know if anybody has, but i’m wondering if theres anyone out there who has made a sub woofer….and i don’t mean the cabinet i mean the actually speaker itself, the thing that makes the noise. but yea, I’ve been doing research and it seems relatively simple but i don’t know, i definitely think it would be fun… i’m in to electronics and metal shop and all that fun stuff so i wonder… but yea if anyone has any thoughts on this i would love to hear it. penny for your thought? but either way i would love to hear if any of you guys have links, or just could give me some tips, OK well thanks.

-- the talented one


2 replies so far

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bobkberg

420 posts in 2535 days


#1 posted 06-18-2010 01:02 AM

I haven’t made one, but I have a pretty fair idea of what’s going to be involved.
The key items are alighment and free movement of the voice coil and its attachment to the speaker cone.
I recall looking at OLD speaker cones – they were actually a flat piece of paper glued into a cone.

The tighter the clearance for movement of the voice coil, the better fidelity you’ll get, but the tougher to keep aligned.

The only advantage here is the low frequencies you’ll be working with, which will not demand the precision of a higher frequency unit.

I would consider starting with a cylindrical magnet with a couple of layers of scotch tape cut to leave no raised edges at the wrap-over point, and then to make a glue-up of titebond and wire to make the voice coil.

Then, I’d put that assembly into paint thinner to dissolve the scotch tape adhesive, and when you can work it loose and cleaned up, you should have a pretty tight clearance. The outside will have to be cleaned as well. Come to think of it, perhaps the whole thing could be cleaned up with a lathe while on the magnet – pure guessing at this point.

-- Bob www.singularengineering.com - A sideline, not how I earn a living

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a1Jim

115202 posts in 3038 days


#2 posted 06-18-2010 01:17 AM

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