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Post subject: Preamp Tube LAYOUT (Pro Reverb)
Posted: Thu Feb 26, 2009 8:03 am
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Joined: Tue Feb 17, 2009 1:19 pm
Posts: 14
Location: Pensacola, FL
Pro Reverb 112 50 watt (2001 model)

I have found schematics on the fender website for this amp, but I can't
decipher exactly the purpose of each of the preamp tubes.

Anyone have some expertise in the preamp stage?!?

There are 8 preamp positions marked V1 through V8. V7 has a 12AT7
and the other positions 12AX7. V1 through V6 are in a straight line,
while V7 and V8 are the second line along with the power tube positions.

My interest lies in which preamp tube effect chnl1, chnl2, drive, reverb,
effects loop, phase inverter, etc.

Thanks for any and all help .... :?


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Post subject: preamp tube layout
Posted: Fri Feb 27, 2009 9:17 am
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Joined: Tue Feb 17, 2009 1:19 pm
Posts: 14
Location: Pensacola, FL
Dedicated to the archives of Fenderland is my final results from a crash
course in amp schematics and diagram interpretation ....

V1 = channel 1 (Vol) [12AX7]
V2 = channel 2 (Gain) [12AX7]
V3 = channel 2 (Vol) [12AX7]
V4 = Phase Inverter/Splitter [12AX7]
V5 = Reverb (recovery?) [12AX7]
V6 = Tremolo [12AX7]
V7 = Reverb (tank?) [12AT7]
V8 = Send/Return [12AX7]


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