Tube Amp Archive

Well, looking over pics of other builds, mainly 5e3's with the same vertical mounted style chassis as I am using. I need to take the plate resitors off the tube and onto terminals. Then run wires against the chassis, and if crossed run 90 degrees angles to avoid lead dress issue. Also may run heater...

Pics added. This is a P2P build, still in testing, loose parts will be shrink wrapped and or put on a terminal. Had to improvise with bridge terminals, as I am running low and don't want to pay shipping for $3 worth of parts. As I mentioned before I am using split grounds, and tried to keep the runs...

I just lowered replace the 470R to a 100R in the filter stage and added a 1K screen resistor . Now I have 275v on the 6V6 plate and 255v screen, 12v on cathode. I also changed the preamp plate resistors to 50k, and cathodes to 820R. Helped a bit. Removed 6V6 220uf cathode bypass cap and it helped a ...

First, since it's single-ended, it can't have crossover distortion, but I think your 6V6 is OK where it is. What is the OT primary impedance it's working into? A 100k plate load with a 4k7 cathode resistor will bias the 12AX7's near cut-off. Are both pre-amp stages set up like that? Maybe try somet...

Just finished putting together this 59' Supro Clone (schematic attached) To limit cost I am using parts from a previous amp build. PT is a Hammond 269ex 190-0-190 65mA. which differs from the 270-0-270 listed on the schematic. I am using diodes instead of tube rectifier. Also using different PSU-RC ...