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Old 15th July 2011, 03:01 PM   #1
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Default Drivers for Rod Elliott active sub woofer

I like the possibilities offered by this approach
Sub-Woofer Controller
but using a Linkwitz transform controller
Linkwitz Transform Subwoofer Equaliser
Somewhere on this forum I've seen some very favourable comments on a car sub woofer speaker, but, of course, coming back I can't find the thread.
All I can remember was that it had a rather complex segmental magnet assembly. Can anybody help identify it please. Also if anyone has built one of these sub woofers would they please get in touch (nothing found on a search, of course). Thanks
Steve
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Old 15th July 2011, 04:43 PM   #2
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Quote:
Originally Posted by evetsfrance View Post
Somewhere on this forum I've seen some very favourable comments on a car sub woofer speaker, but, of course, coming back I can't find the thread.
All I can remember was that it had a rather complex segmental magnet assembly. Can anybody help identify it please. Also if anyone has built one of these sub woofers would they please get in touch (nothing found on a search, of course). Thanks
Steve
The Alpine subs?

http://support.alpine-usa.com/produc..._S06212011.pdf

Tapped Horn for the Lazy and Impatient
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Old 16th July 2011, 06:59 AM   #3
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Thanks, that's 'em.
Steve
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Old 17th July 2011, 05:48 AM   #4
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Would a Lanzar Optidrive 1232d be an alternative to the Alpine?
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You can call me Mad Professor, building crazy experiments in my Electronics Workshop
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Old 17th July 2011, 07:30 AM   #5
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Originally Posted by EWorkshop1708 View Post
Would a Lanzar Optidrive 1232d be an alternative to the Alpine?
It's certainly a beast. I'm a bit stuck by what I can get hold of in the wilds of France. Alpine has a dealer in our local one horse town.
Can anyone help with calculating the resonant frequency of a speaker in an IB enclosure ? WinISD doesn't seem to do it.

Steve

Last edited by evetsfrance; 17th July 2011 at 07:32 AM.
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