Trying to bias my amp need some help...

[napalmdeath]

Going return/exchange new tubes and try another set. Lots of great suggestions covering all angles. Once again thanks for the help.

Good luck getting him to take them back.

The problem is, the bias adjustment has a narrow sweep, and the pair you have is too hot. You likely need a pair in the 30's.

I have a pair of JJ E34L's, and a pair of JJ KT77's that would work for you. Doug can be a dick sometimes, let me know if he gives you a hard time. I can send you a better pair.

 

[FourT6and2]

Reading a 10v difference on the plates is strange though. If your old set reads the same Vp on each socket and the new set does not, something's wrong with the tubes. Definitely push to get a new set.

 

[Loudness250]

Yeah I have a bias rite and the plate voltage is always consistent. It's the tubes, definitely send back and get some new ones. That's the problem. And like previously mentioned. Get tubes that are in range of your bias sweep.