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Old 2nd January 2003, 10:30 AM   #21
stigla is offline stigla  Norway
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Join Date: Nov 2001
Location: Trondheim

I think I finaly have gotten what I want! Down bellow is a schematic for my Dirty channel. REally nice crunch, from crackling and sparkling to thight and almost heavy crunch! That 220k gridresistor on the 3rd tube really did the trick!

Click the image to open in full size.
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Old 2nd January 2003, 11:04 AM   #22
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have fun playing your favorite axe!

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Old 21st February 2004, 03:44 PM   #23
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Just wanted to cast some light over an old thread..

Tonepad has a schematic for the Sansamp GT-2 - seems like someone went through a lot of black epoxy.
For those of you who don't know, the GT-2 is an "amp simulator" stompbox/DI preamp for guitars. A very well reputed one, in fact. I've heard it in the past and it's very convincing - and i'll surely will be playing with the schematic to see what kind of mods i can get away with. The thing is basically a mess of active opamp filters, so i'm still trying to make some sense out of it.

Still, well worth checking out.
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Old 27th August 2012, 12:28 PM   #24
hawk900 is offline hawk900  Canada
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Join Date: Mar 2012
As u stated I believe early you have a two stage preamp one tube for stack and other for phase inverter. Or you might have a 4stage or 3. Throw a high gain high noise 12axl7a in your phase invertor socket.
Instant cruchy fuzz.
Check chart:
12AX7 Comparison of Current Made Tubes | Amplified Parts
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