Promise not to laugh? - diyAudio
Go Back   Home > Forums > Loudspeakers > Subwoofers
Home Forums Rules Articles diyAudio Store Gallery Wiki Blogs Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Thread Tools Search this Thread
Old 26th March 2013, 07:48 PM   #1
diyAudio Member
BillEpstein's Avatar
Join Date: Feb 2004
Location: The Great Smoky Mountains
Default Promise not to laugh?

I want to bag my plate amps (one broken, the other sucks) in a pair of subwoofers. I'll drive them with a stereo amp I have from the second outputs of my pre-amp.

I know I can easily build a circuit, I just don't know the terms or where to go for info. Tried a 2-way crossover designer, input 4 ohm woofer and 90 Hz crossover with second order (12dB slope) Butterworth. That much I know if it were a 2 way.

Can I just use the woofer part of the circuit and put a big, 10mH coil in series and great big, 312mF cap across? Can it be that simple?
  Reply With Quote
Old 26th March 2013, 08:14 PM   #2
DaveG is offline DaveG  United States
diyAudio Member
Join Date: Feb 2007
Location: California
that will work.
You will need some way to adjust the signal level input to the woofer amp.

And you might want to consider a line lever crossover between the preamp out and amp in.
Either passive line level or a simple 1 op amp active crossover. It will be a lot easier to adjust the frequency and slope if you want to try different options.
search esp crossover projects
  Reply With Quote
Old 26th March 2013, 08:17 PM   #3
diyAudio Member
Richard Ellis's Avatar
Join Date: Sep 2006
Location: Mar del Plata, a BIG seasonal getaway city, can see the Ocean from our residence.
Yes, yes it can...........In one 'experiment' I had a 12" DVC sub, built the enclosure @ 24 cu ft...!!! & a pair of 10mH high current $$ coils..........sounded great.
I promptly disassembled (busted up) this sub..kept the second one(Isobaric push-pull idea).......the 'original' is gathering dust.

__________________________________________________ ___Rick.......
  Reply With Quote


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Similar Threads
Thread Thread Starter Forum Replies Last Post
Just to laugh... Cede Tubes / Valves 2 28th December 2009 10:07 PM
Promise not to laugh Moondog55 Multi-Way 24 19th July 2009 10:40 AM
Free amp top lid versus a promise to build a DIY preamp for me ad010685 Swap Meet 0 14th May 2006 07:57 AM
Please dont laugh Scribble Pass Labs 1 14th January 2003 07:21 AM

New To Site? Need Help?

All times are GMT. The time now is 01:37 PM.

vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Copyright 1999-2017 diyAudio

Content Relevant URLs by vBSEO 3.3.2