Peavey Windsor clean trick.

mrt

Member
Messages
520
for a good pedal amp, put a 12AU7 tube in v1 and v2.


Then use a Crunch Box, I tried a OCD and it didnt sound as "marshall", and kinda thin..

with AU tubes, you have a really good pedal amp.

I A/B'd it with my Marshall DSL, and it held it own.

Its never going to be a high gain metal amp,but it can pull off those classic marshall tones.
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Structo

Member
Messages
9,553
12au7's only have a gain factor of 17-20 compared to a 12ax7's 100mu.

The important thing to remember about the 12au7 is that it has roughly 10 times the the current draw, so if the power transformer is near it's limit a tube like that could cause the heater voltage to drop.
A 12ax7 draws .5 to 1 compared to 10 to 12 on the 12au7.
Better off trying a 12ay7 or 12at7.
 

JWK

Member
Messages
363
12au7's only have a gain factor of 17-20 compared to a 12ax7's 100mu.

The important thing to remember about the 12au7 is that it has roughly 10 times the the current draw, so if the power transformer is near it's limit a tube like that could cause the heater voltage to drop.
A 12ax7 draws .5 to 1 compared to 10 to 12 on the 12au7.
Better off trying a 12ay7 or 12at7.

You have everything wrong and mixed up. Please don't give advice to people when you really don't know what you're talking about.

The 12AU7 will only draw that much current if the circuit is designed as such. In a circuit designed for a 12AX7, it will not magically draw 10mA of current, and that current has absolutely nothing to do with the heater circuit. :jo
 




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