Bias/plate voltage variation on XTC 20th

RG955TT

New member
Trying to bias up a set of GLKT77s in my XTC and I am getting variation in plate voltage from 499 to 529, does this seems normal? Bias was also moving from 30-33 to as high as 37 then could go back eventually. This is after an hour or more of being on and running thru my Furman voltage regulator. I dont remember this being an issue in the past and was looking for any input. Thanks

Soung wise my issue is it sounds great one day and the next is thinner and somehwat fizzy and cold (like underbias) Thanks
 
Back
Top