2 Channel Triple Rectifier problems

[bassplayer142]

I have a dual channel triple rectifier. The speakers are 4x12 wired in series/parallel. The ohms are all connected correctly at 8 ohms. The problems is that the amp is buzzing very loudly when turned up. I was told that it would buzz some but this is loud. Also, I don't know if the tubes are bad or not. If so what are the best tubes to buy and where to get them. Also, the amp got cleaned up at a store about a year ago and the problem is still there. Thanks a lot.

 

[jbird]

Buzzing? I'd guess single coils pups, or P90's? Bad cables? Funky power? Computers, flourescent lights? To the amp, silicon diode or tube rectifier, try switching? Bold or Spongy variac, try switching? Tap on the pre-amp tubes? If the tubes are over a year old, or age is unknown, just replace em all!