Tube Amp Archive

Had a crack at tracing out the Chimera's tone stack which has the bass control in place of the voice switch. Looks to be the same bass control as the Benson Preamp running after the tone control from the Chimera, so I copied unknown values for the caps and pots from the pedal. First time tracing a ...

Hey all - got one of these recently and it seems to have a little more hum than I'd like, so I cracked open to look for obvious suspects...and there were some surprising circuit differences. v1b had a 1k cathode instead of 2k2, the split plate was a 5k8 instead of 10k w/ a .1uf feeding the PI. Also...

Hey all - got one of these recently and it seems to have a little more hum than I'd like, so I cracked open to look for obvious suspects...and there were some surprising circuit differences. v1b had a 1k cathode instead of 2k2, the split plate was a 5k8 instead of 10k w/ a .1uf feeding the PI. Also ...