bias Classic 60, Audio Research


DOES ANYBODY OUT THERE KNOW HOW TO SAFELY BIAS A CLASSIC 60 AUDIO RESEARCH TUBE AMPLIFIER.

BOUGHT MINE USED--LOVE IT--INSTALLED NEW TUBES--BUT THE BIAS INSTRUCTIONS SOUND DANGEROUS TO SAY THE LEAST.

ANY HELP, MUCH APPRECIATED.

THANKS.

GEORGE
128x128gmardinly

Showing 1 response by risingnote

Hi,

I own the Audio Research Classic 60 and can instruct you, I believe. Do you have a meter? You will definitely need one, obviously. You will also need amp probes with an alligator clip to make it simpler. The amp will have to be turned onto the handles on its face. The resistors are actually under the PC board. Some of the resistors are hidden a bit under the chassis. It will help if you have a competent friend helping you. You may need to use standard amp probes while turning the bias pot and reading your meter ( which should be turned to read milliamps, mA ).
If you think you're ready to all do all of this let me know at [email protected].

P.