Bias Issues Jan 22, 2012 0:30:16 GMT -5
Post by winggzero on Jan 22, 2012 0:30:16 GMT -5
Alright guys, lets see if anyones got an answer for this one. Tonight I opened up my head for the first time since Scott Had it in 03 to change and bias the power tubes. I took the plate voltage reading at 461 and proceeded to calculate my bias which should have been around 56. However when I plugged the probes in the bias was set at 73. NO ONE has been inside this head since Scott was in here so How am I supposed to bias this? At 73 it was biased for a class A amp... Is that how these are supposed to be biased? The amp has the MM transformer so maybe that changes somthing but Im stumped.