Got this amp from Joe. Had one a few years ago but my guitar head brother took it because he loved the tone. Not much to do to this amp since it uses pretty high grade parts. All you really can do to it is plus up the power supply, add an anode choke, add a grid choke. Im going to plus up the power supply, and while in there restore the volume pot. Someone removed it during the amps past life. right now, the amp has 100uf of capacitance in the power supply. I like to have, based on the grear I have owned, and the type of music I play, about 300uf's per power tube. The power supply sits at around 300volts. I have 120uf mini caps rated at 450volts. going to put 4 of them in. Not much room in there, but I know it will fit, since I modded the first one of these I had. This amp is SS rectified so there's no problem with going beyond the standard 40uf's you find in tube rectified amps at the B+ voltage point (after rectification, before first droping resister and/or fists choke, in most cases).
Welcome to the Klipsch forum.....hope you stick around.
This hobby began in 1966, when I figured out how to disable my dads stereo by swapping out the driver tubes for RF tubes. He used to like to blast the stereo during the school week til 1 in the morning.
my first crossover network project came in 1972.
my first DIY khorns came in 1986. I built as set of khorns using 18inch drivers, enclosed backs, and used them at an air force base in Germany during all army day.