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Hoffman Amps Forum image Author Topic: Standalone preamp question.  (Read 1808 times)

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Offline dragonbat13

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Standalone preamp question.
« on: June 29, 2022, 09:53:47 pm »
I've been searching high and low for some info on this and for some reason cant find an answer.

I am considering building a rack mount JCM800 preamp.  Maybe with an effects loop inserted if there is a benefit from doing so.

Anyhow, my question is, what exactly is done to yank the preamp section out of a jcm800 and plug it's output into any amp I want? Is it really as simple as hooking an output jack directly to the dang master volume output? I just can't believe it's that simple.  There's gotta be a catch.

Any info, links, whatever would be appreciated.

Offline sluckey

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Re: Standalone preamp question.
« Reply #1 on: June 29, 2022, 10:33:14 pm »
Quote
Is it really as simple as hooking an output jack directly to the dang master volume output?
Yes. Then just connect to a power amp.
A schematic, layout, and hi-rez pics are very useful for troubleshooting your amp. Don't wait to be asked. JUST DO IT!

Offline tmknight

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Re: Standalone preamp question.
« Reply #2 on: July 03, 2022, 08:56:45 am »
Think of it as connecting the FX SEND of the JCM 800 to the RECEIVE of another amp

 


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