C Audio pro amplifiers

SemperFi · 13th August 2008, 08:55 PM

Hi folks. I've got a pair of blown PA amps and I am trying to find the schematics. I have tried a google, but nothing, so perhaps someone here can help...
The amps are made by C Audio, model CA4. Looks like something from the mid eighties.
Much appreciated.

burbeck · 14th August 2008, 09:01 AM

hi there,
are you sure the amps are C Audio and not Crest Audio?

Frank Berry · 14th August 2008, 09:59 AM

I believe it is a Crest amplifier too. The schematic is available online at the crest website.

SemperFi · 14th August 2008, 10:34 AM

Thanks for reply. I am sure it is C Audio, out of Cambridge in England. I have heard they no longer exist and maybe they were bought up by either Crown or perhaps Crest Audio. I looked at the CA series amps at the Crest web, but they are not the same. The CA4 model I have are old-school mid-80s type with a huge transformer and probably weight 30lbs or more. They are 400watt/8ohms per channel with bipolar output transistors. I dont think they are older than this because they have a TL071 opamp in the circuit. (Not that I know when that opamp was typical)
I guess I can T/S these amps without the schematic, but it would make it easier.

burbeck · 14th August 2008, 11:20 AM

hi there,
you are correct C-Audio no longer exist.
we have an expert for these amps on the forum Lee Basham,
do a search on this forum for that name, possibly send him an email

13th August 2008, 08:55 PM	#1
SemperFi diyAudio Member Join Date: Jan 2002 Location: nowhere	C Audio pro amplifiers Hi folks. I've got a pair of blown PA amps and I am trying to find the schematics. I have tried a google, but nothing, so perhaps someone here can help... The amps are made by C Audio, model CA4. Looks like something from the mid eighties. Much appreciated.

14th August 2008, 09:01 AM	#2
burbeck diyAudio Member Join Date: Aug 2004 Location: Ratae Coritanorum	hi there, are you sure the amps are C Audio and not Crest Audio? __________________ regards bob

14th August 2008, 09:59 AM	#3
Frank Berry diyAudio Member Join Date: Sep 2003 Location: Midland, Michigan	I believe it is a Crest amplifier too. The schematic is available online at the crest website. __________________ Frank

14th August 2008, 11:20 AM	#5
burbeck diyAudio Member Join Date: Aug 2004 Location: Ratae Coritanorum	hi there, you are correct C-Audio no longer exist. we have an expert for these amps on the forum Lee Basham, do a search on this forum for that name, possibly send him an email __________________ regards bob

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


	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

14th August 2008, 10:34 AM	#4
SemperFi diyAudio Member Join Date: Jan 2002 Location: nowhere	Thanks for reply. I am sure it is C Audio, out of Cambridge in England. I have heard they no longer exist and maybe they were bought up by either Crown or perhaps Crest Audio. I looked at the CA series amps at the Crest web, but they are not the same. The CA4 model I have are old-school mid-80s type with a huge transformer and probably weight 30lbs or more. They are 400watt/8ohms per channel with bipolar output transistors. I dont think they are older than this because they have a TL071 opamp in the circuit. (Not that I know when that opamp was typical) I guess I can T/S these amps without the schematic, but it would make it easier.

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

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
pro amplifiers vs. home audio amplifiers	bonsai171	Solid State	26	25th February 2004 08:24 PM
IC audio amplifiers	jteef	Solid State	8	21st July 2001 03:14 PM

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