your princeton reverb
Dear Mr. Barrett, what are the specifications of your princeton reverb. how do you have it set up. tubewise and what kind of speaker has it?
In my princeton the rectifier is a GZ34 and one of the pre-amp tubes is a so-called 7o2s next to a standard 12ax7.
I have to mention my princeton doesn't have a reverb, it's just an edition with only the vibro-function.
Would it make any difference to replace the rectifier and replace the 7o2s with another 12ax7?
If I'm correct, the GZ34 is the same as a 5AR4. If you're looking for more sag... more distortion at a lower volume... then try the 5U4. I use all 12AX7's because I wanted more volume... less sag... out of that amp. I like this amp to be a little cleaner in tone, since I have other amps that are more distorted. Try the 5U4, it's cheap and easy to experiment with. I'm not familiar with "7o2s".
thank you very much for your info. I'll give it a try.
Nothing has been changed on this amp. It's either a 1967 or 1972 (some discrepancy in the date codes). I have a 5U4 rectifier, 6L6 power tubes and all the rest of the tubes are 12AX7's.