popinfresh said:
Indeed, it is different to the 400+. That uses 12 6l6's (roughly 25 watt each) and this uses 8 KT88's (roughly 50 watt each).
This also has 7 preamp 12AX7's and a driver tube. I'm not sure on the Mesa, but it has 4? I think.
The circuitry, I have no idea with this. All I know is is in the preamp V1 is gain I and when you switch to gain II (overdrive) it adds in the V2 12AX7 as well..
I think Oddio(?) made a circuitry diagram etc, but I couldn't understand it! One of the other V8 owners will probably no more, i'm new to tubes..
Cheers.
You're doing quite well! The V8 does, indeed, have 7 preamp tubes. One each is for Gain 1 and Gain 2, tube 3 is makeup gain for signal loss through the passive EQ, tube 4 is used for the compressor. Tubes 5 and 6 are less clear to me, but one appears to be a fixed limiter of some type, and the other may drive the DI. Tube seven is master preamp output gain.
I know far less with regard to the 400/400+, but it appears that the two gain stages of tube 1 are used for inputs 1 & 2, tube 2 powers the rotary EQ, tube 3 is a driver and tube 4 is a buffer for the output section.
Then of course you have the difference of 12 6L6's in the 400+ versus eight 6550's in the V8. Actually, the 400, which was designed to run six 6550's, is probably more similar, overall to the V8.
If all works out well, I will have a Peavey Classic 400 in my hands before too long, and I think that this will make for an interesting comparison to the V8, as they are laid out fairly similarly, and they each have eight 6550's in the output section.
Tom.