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Author Topic: mixing preamp and power amps sections from different amps  (Read 12039 times)
beatnik
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« on: March 06, 2012, 10:03:12 AM »
Hi guys, It's my first post here! I'm kinda new to valve amplification but I'm starting right now.

I'd like to build a system extremely versatile, mainly for recording purposes.

I need flexibility with the wattage of the power amp, without losing the opportunity of a good sounding pre.

For example, I'd like to use the sound of the JCM preamp, in a Champ power amp!!

I think about using a buffer like the c-lator, which could match the impedances and levels between pre and power sections on different amps.

Do you think that this could work?

Many thanks in advance
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wyatt
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« Reply #1 on: March 06, 2012, 09:27:49 PM »
The JCM 800's cathode follower stage (V2B) pretty much takes care of any voltage/impedance issue you would have matching it to a power amp.

So, in this image, the preamp is on top....

http://www.drtube.com/schematics/marshall/jcm800pr.gif

You can take the signal coming of the 'B" at right of that preamp schematic and run that into whatever power amp you want run it into.
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