Examples of finished 6-ch GC's?

faithblinded · 11th November 2004, 07:42 AM

I remember seeing a few threads about people building 6 channel gainclones for HT use, but don't recall seeing any finished. Could someone post a link or two to any they know of, please?

Also, I'm wondering what the best topology would be? 6 mono channels, or 3 stereo pairs? And what to do about transformers?

Also, if anyone has completed such a project, are there any existing PCB designs around for a 6-ch Gainclone?

BlackDog · 11th November 2004, 05:59 PM

Hi,

Well my 6 channel LM3875 amp is kinda finished. There's Mainly cosmetic stuff to finish it off, but it's been in active service for quite a few months.

I used 3 Brian GT Premium kits and 2 18V toroidal 300VA transformers. I still haven't gotten around to taking any photos of it, but will try to soon....

SQ Kid · 12th November 2004, 06:32 PM

i started on one, but have yet to finish it up. i went with 6 mono amps, 3 of the rectifier boards, and 3 transformers. someday i'll finish.....

Mattyo5 · 13th November 2004, 01:04 PM

BPA-200 w/ six chips working w/ pics!

here's mine.. works well. wish i had used an avel 1kva toroid per monoblock though...then they'd really kick butt!!

-Matthew K. Olson

www.avellindberg.com

MWP · 13th November 2004, 01:45 PM

Well this is actually 8 channels (2*LM3886Ts bridged per chan).

[edit]
Hmm, embeded images dont work

Youll have to click on the links.

thomas997 · 14th November 2004, 08:20 AM

Mines "finished", but I doubt it would help you out at all...

Its just simply Briangt's layout (the one posted on his site), 6 individual modules on perf boards.... (5 lm3875, and the sub a pair of 3886). No pots. Transformers are 700VA each, way overkill. Same with the heatsinks, they dont even get warm.

No fancy stuff like MWPs

, more like the opposite: rats nest of wires, unmatched caps, etc.

http://www3.telus.net/z/amp/amp%20001.jpg
http://www3.telus.net/z/amp/amp%20002.jpg
http://www3.telus.net/z/amp/amp%20003.jpg

11th November 2004, 07:42 AM	#1
faithblinded diyAudio Member Join Date: Dec 2003 Location: in a hole	Examples of finished 6-ch GC's? I remember seeing a few threads about people building 6 channel gainclones for HT use, but don't recall seeing any finished. Could someone post a link or two to any they know of, please? Also, I'm wondering what the best topology would be? 6 mono channels, or 3 stereo pairs? And what to do about transformers? Also, if anyone has completed such a project, are there any existing PCB designs around for a 6-ch Gainclone?

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Power supplies examples	maverick_123	Class D	2	20th November 2007 02:08 PM
Regulated Supply Examples	Mike, K8LH	Chip Amps	4	27th December 2005 11:04 PM
examples of crown BCA topology	jez	Class D	2	30th September 2005 09:10 AM
Examples of DIY motional feedback?	Mr Evil	Multi-Way	10	21st November 2004 05:20 PM
Mirror image IS & VAS BJT amp examples?	sam9	Solid State	6	30th June 2004 08:46 AM

New To Site?	Need Help?
Register to Participate Search Privacy Statement Contact Us	Frequently Asked Questions Did you forget your password? 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

11th November 2004, 05:59 PM	#2
BlackDog diyAudio Member Join Date: Feb 2004 Location: Wellington, New Zealand	Hi, Well my 6 channel LM3875 amp is kinda finished. There's Mainly cosmetic stuff to finish it off, but it's been in active service for quite a few months. I used 3 Brian GT Premium kits and 2 18V toroidal 300VA transformers. I still haven't gotten around to taking any photos of it, but will try to soon....

12th November 2004, 06:32 PM	#3
SQ Kid diyAudio Member Join Date: Apr 2003 Location: MA	i started on one, but have yet to finish it up. i went with 6 mono amps, 3 of the rectifier boards, and 3 transformers. someday i'll finish.....

13th November 2004, 01:04 PM	#4
Mattyo5 diyAudio Member Join Date: Aug 2002 Location: Farmington, CT	BPA-200 w/ six chips working w/ pics! here's mine.. works well. wish i had used an avel 1kva toroid per monoblock though...then they'd really kick butt!! -Matthew K. Olson www.avellindberg.com

13th November 2004, 01:45 PM	#5
MWP diyAudio Member Join Date: Oct 2002 Location: Adelaide, South Australia	Well this is actually 8 channels (2*LM3886Ts bridged per chan). [edit] Hmm, embeded images dont work Youll have to click on the links.

14th November 2004, 08:20 AM	#6
thomas997 diyAudio Member Join Date: Feb 2004 Location: Vancouver	Mines "finished", but I doubt it would help you out at all... Its just simply Briangt's layout (the one posted on his site), 6 individual modules on perf boards.... (5 lm3875, and the sub a pair of 3886). No pots. Transformers are 700VA each, way overkill. Same with the heatsinks, they dont even get warm. No fancy stuff like MWPs , more like the opposite: rats nest of wires, unmatched caps, etc. http://www3.telus.net/z/amp/amp%20001.jpg http://www3.telus.net/z/amp/amp%20002.jpg http://www3.telus.net/z/amp/amp%20003.jpg

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)