2 chipamp's per speaker (active) wiring advice? - diyAudio
Go Back   Home > Forums > Amplifiers > Chip Amps

Chip Amps Amplifiers based on integrated circuits

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
Reply
 
Thread Tools Search this Thread
Old 11th July 2008, 09:30 PM   #1
diyAudio Member
 
Join Date: Jun 2008
Default 2 chipamp's per speaker (active) wiring advice?

Hello all,

I have a perfectly fine set of B&W 600 S3's I am trying to re-case into cloned 802d's and I am trying to come up with the best way to do it.

I would be using the existing midbass woofer and tweeter from the 600s3 as well as the existing crossover. The new case design should have very similar volume to the small bookshelf case it was designed for, and I will be adding two new 8" woofers per speaker (per the original)

What I WAS imagining, was running my amp's powered speaker level out into a plate 'sub' amp (built into each speaker) via the sub amps speaker level inputs. Then running the speaker level out into the existing B&W crossover. I believe I would have problems running only a mono signal to each speakers sub amp, but I am not positive.

What I was thinking as a lower cost alternative (always better) was using 2 chip amps built into each speaker sharing a powersupply. Maybe 30 watts for the 2 8" woofers and 30 watts into the old bookshelf crossover.

What I can't figure out is how to seperate the signal into low and high frequancy.

Any simple ideas that don't involve terribly complicated wiring?

Or maybe a better way to do what I am trying to do?

The speakers won't need to go to exceedingly high volume, and are being morphed into 802d clones primarily for looks. I don't require a better sound than what i had with the 2 bookshelves stand mounted and properly crossed over to a single sub.
  Reply With Quote
Old 12th July 2008, 03:27 AM   #2
bichi is offline bichi  United States
diyAudio Member
 
bichi's Avatar
 
Join Date: Aug 2007
Linkwitz Riley Active, the only way to go for quality bi/tri-amping.

- don't know about "simple," but some papers/articles below, which might help you make decisions/design.
- (psssst... did it with four LM3886's, pair driving low and mid+tweeter, Beovox MC120.2's (rewired, bypassing LF passive section) and Behringer SuperX Pro CX3400 electronic crossover and not looking back...)
- still doing tri-amp experiments with plans to build dedicated Linkwitz-Riley active crossovers.

BIAMP
http://sound.westhost.com/bi-amp.htm
http://sound.westhost.com/bi-amp2.htm

Active Linkwitz-Reily kit:
http://sound.westhost.com/project09.htm

Background, Passive Filters:
http://sound.westhost.com/lr-passive.htm
  Reply With Quote
Old 12th July 2008, 08:25 AM   #3
Nuuk is offline Nuuk  United Kingdom
diyAudio Member
 
Nuuk's Avatar
 
Join Date: Feb 2003
Location: Somerset, SW England
If you want to try the concept, but don't want to build something as complex, how about the very simple active crossover describedhere ?
__________________
The truth need not be veiled, for it veils itself from the eyes of the ignorant.
  Reply With Quote
Old 12th July 2008, 09:00 AM   #4
AndrewT is offline AndrewT  Scotland
diyAudio Member
 
Join Date: Jul 2004
Location: Scottish Borders
for the tiny cost of a chipamp and it's few components, I suggest you dedicate a chipamp to EVERY driver.

The existing passive crossover can be driven by two chipamps.
The two extra 8inch driver each get their own chipamp.

And use an L-R active crossover to split the signal into the bass and mid/treble amps.
__________________
regards Andrew T.
  Reply With Quote
Old 12th July 2008, 09:26 AM   #5
Nuuk is offline Nuuk  United Kingdom
diyAudio Member
 
Nuuk's Avatar
 
Join Date: Feb 2003
Location: Somerset, SW England
I forgot to mention this 3- way active design which could also give you some pointers.
__________________
The truth need not be veiled, for it veils itself from the eyes of the ignorant.
  Reply With Quote

Reply


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
Powered Zaphaudio style HiVi B3N speaker using a Chipamp w/ active filters DaMeat Full Range 2 19th December 2012 02:15 PM
First chipamp build need advice lm4780 chevy1965usa Chip Amps 10 5th March 2009 10:44 AM
Layout and wiring advice Nohabla Chip Amps 4 28th January 2009 12:46 PM
first chipamp...need advice thadman Chip Amps 9 25th September 2006 11:44 PM
PTP Active Crossover Wiring paulhfx Multi-Way 3 22nd August 2005 01:35 AM


New To Site? Need Help?

All times are GMT. The time now is 07:18 AM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright 1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2