Fender 3 stage clean to Dumble and Trainwreck?

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roberto
Posts: 1841
Joined: Tue Nov 27, 2007 4:45 pm
Location: Italy

Fender 3 stage clean to Dumble and Trainwreck?

Post by roberto »

Hello everybody,

I'm recently working on a three stage clean that was clearly inspired by the Fender Super Reverb ( http://fenderguru.com/wp-content/upload ... _schem.gif ) in terms of voltages and polarizations, but with different voltage dividers.

If it were the Fender it would be:
68k grid stopper
100k 1k5//22u
Fender EQ + Volume
100k 1k5//22u
22n to the voltage divider 3M3//10p and 220k to ground
100k 1k5

I actually modded it to a Dumble-like polarizations:
33kgrid stopper
220k 3k3//4u7
Fender EQ (with 470p treble cap) + Volume
150k 2k2//4u7
22n to the voltage divider 2M2//22p and 220k to ground
100k 1k5

and I whilkst it has less mids than the same preamp with all 100k 1k5, I like the way it takes stomp boxes and how it gently overdrives with my strat.

I would like to know it someone has ever modded a Super Reverb like preamp into something similar, or into a Trainwreck-like preamp with the third stage changed to: 100k 10k directly fed without voltage divider.

Thanks
Roberto
Roe
Posts: 1918
Joined: Thu May 31, 2007 2:10 pm

Re: Fender 3 stage clean to Dumble and Trainwreck?

Post by Roe »

I have a twin with a wreck channel, although I'm using tweaked k50 specs. It works well. Very dynamic and aggressive sounding. The 3m3/150k voltage divider isn't a great idea - its noisy. I prefer the 2rock JM specs but with a gain pot that adjusts the voltage divider (I'm using this on one channel and the k50 on the second channel)
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User avatar
roberto
Posts: 1841
Joined: Tue Nov 27, 2007 4:45 pm
Location: Italy

Re: Fender 3 stage clean to Dumble and Trainwreck?

Post by roberto »

So 1M log pot instead of it, clear, thanks. I've used a 500k log pot in some other builds, with a small pF treble peaker and I liked it, but here I cannot.
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