Conn organ conversion to amp

nuvo · 20th June 2006, 04:07 AM

Schematic needed for a Conn UA 6026 organ chassis - do not have any other information on this unit, but I just could not pass it up - it has tube positions for 4/7027A, 2/7868, 2/7199, and 2/12AX7 - just the 7199 & 12AX7 are missing. Everything else appears (cosmetically) good.

I did not get a chance to look under the hood, but I think it has potential as an audio amp or guitar amp. Does anyone have any information on converting an organ amplifier to audio or guitar use?

Thanks for any help.

nuvo

Grandmark · 30th September 2010, 09:51 PM

I'm working (having a pro do it) on a conversion of a 6026 Conn right now. The amp is a stereo 20/20w rms. a mono preamp will be directed to one side. the 3-way standby will be A+B - Standby - A. Amp B will default from the Pre unless a second pre is pluged in. Each amp will have its own output. More info as project progresses.

ss68396331 · 15th October 2010, 02:53 AM

I have one of these too and am looking for a schematic. I am hoping to use this as a stereo amp with subwoofer on the third channel. This will make a nice Hi-Fi amp. Very quality build with nice iron on it.

bob91343 · 15th October 2010, 05:25 AM

I doubt the unit is so complex you can't reverse engineer it. I have traced many a schematic diagram; it just takes patience. On top of that, you probably can draw most of it without looking anyway. Four 6L6s either push pull parallel or push pull two channels (probably the latter). Solid state rectifier. The only hard part would be the bias circuit and the tone controls, if any.

Grandmark · 29th November 2010, 01:59 AM

Well, the conversion of the Conn 6026 Organ amp to Guitar amp is complete. I like it alot!! If anyone has a 6026 they want to sell let me know. I would love to have a second as a backup amp. here are a couple pics.

chops · 29th November 2010, 06:32 PM

I've got an old Baldwin amp that I believe used to be a 100 watt mono amp from some recent research I did on the web. It was converted over to stereo operation a few years ago and I finally got it back up and running a month or so ago. It's now rated around 23 watts per channel and sounds great! And just like the Conn amps, the Baldwin has some massive quality iron.

vieneerg · 12th March 2011, 10:01 PM

I've got a Conn 6050 amplifier (tubes/valves included) that I'm attempting to get to work as a guitar amp head. It is missing all external connectors (Power 1 & 2, Internal & External Speaker, and Expression Control). I need a source for a schematic for this amp + all external wiring so I can get this working. Any ideas where I could find such a beast?

Grandmark · 25th July 2011, 12:39 PM

I have a schematic for the Conn 6026 Chassis (modified) email me for a copy an notes. me@markeckard.com

20th June 2006, 04:07 AM	#1
nuvo diyAudio Member Join Date: Mar 2006 Location: New York	Conn organ conversion to amp Schematic needed for a Conn UA 6026 organ chassis - do not have any other information on this unit, but I just could not pass it up - it has tube positions for 4/7027A, 2/7868, 2/7199, and 2/12AX7 - just the 7199 & 12AX7 are missing. Everything else appears (cosmetically) good. I did not get a chance to look under the hood, but I think it has potential as an audio amp or guitar amp. Does anyone have any information on converting an organ amplifier to audio or guitar use? Thanks for any help. nuvo

25th July 2011, 12:39 PM	#8
Grandmark diyAudio Member Join Date: Sep 2010 Location: Tallahassee, FL	Conn 6026 w/ cathode follower preamp I have a schematic for the Conn 6026 Chassis (modified) email me for a copy an notes. me@markeckard.com

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30th September 2010, 09:51 PM	#2
Grandmark diyAudio Member Join Date: Sep 2010 Location: Tallahassee, FL	I'm working (having a pro do it) on a conversion of a 6026 Conn right now. The amp is a stereo 20/20w rms. a mono preamp will be directed to one side. the 3-way standby will be A+B - Standby - A. Amp B will default from the Pre unless a second pre is pluged in. Each amp will have its own output. More info as project progresses.

15th October 2010, 02:53 AM	#3
ss68396331 diyAudio Member Join Date: Oct 2010	I have one of these too and am looking for a schematic. I am hoping to use this as a stereo amp with subwoofer on the third channel. This will make a nice Hi-Fi amp. Very quality build with nice iron on it.

15th October 2010, 05:25 AM	#4
bob91343 diyAudio Member Join Date: Mar 2010	I doubt the unit is so complex you can't reverse engineer it. I have traced many a schematic diagram; it just takes patience. On top of that, you probably can draw most of it without looking anyway. Four 6L6s either push pull parallel or push pull two channels (probably the latter). Solid state rectifier. The only hard part would be the bias circuit and the tone controls, if any.

29th November 2010, 06:32 PM	#6
chops diyAudio Member Join Date: Apr 2003 Location: St Pete, Florida	I've got an old Baldwin amp that I believe used to be a 100 watt mono amp from some recent research I did on the web. It was converted over to stereo operation a few years ago and I finally got it back up and running a month or so ago. It's now rated around 23 watts per channel and sounds great! And just like the Conn amps, the Baldwin has some massive quality iron.

12th March 2011, 10:01 PM	#7
vieneerg diyAudio Member Join Date: Mar 2011	I've got a Conn 6050 amplifier (tubes/valves included) that I'm attempting to get to work as a guitar amp head. It is missing all external connectors (Power 1 & 2, Internal & External Speaker, and Expression Control). I need a source for a schematic for this amp + all external wiring so I can get this working. Any ideas where I could find such a beast?

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