Hoffman Amplifiers Tube Amplifier Forum
Amp Stuff => Tube Amp Building - Tweaks - Repairs => Topic started by: plexi50 on November 05, 2011, 05:15:17 pm
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Hey guys!! I must be blind and stupid today. Can some one tell me the bias for the Reissue Bluesbreaker using 5881 tubes? *******
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whats your voltage on pin 3?
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whats your voltage on pin 3?
I decided to use 6V6 tubes instead. Plate voltage is 426VDC with a -38.6VDC grid voltage. Ive been reading that this amp supposedly is better suited to the 6V6 tube
The Bluesbreaker schematic shows no grid voltage. I really cant find anything about biasing it online either
I think the only difference between the JTM 45 and the Bluesbreaker was the tremelo
The tremelo has been dissconected. The voltage mixer circuit is now 270K instead of the 470K's that were in it
Also put in a 500pf cap in place of the 100pf cap on channel 1 mixer resistor bypass cap
Probably going to do the same with channel 2