Thanks Gary. Sounds like its much ado about not a lot.
Biasing Question: ARC VS 115 Hifigeek
Gary -- Hifigeek1: Hi Gary. Hope you're having an enjoyable Memorial Day weekend. Took a little time to check the bias on my ARC VS 115. I have KT-120 tubes. Admittedly, I'm overdue for an all-around re-tube, including 6H30s.
Here's the Q. Bias wasn't all that far off, but since I was checking anyway, I thought I'd true up the bias to 65mV. I found that as I made small adjustments to the biasing pots around the 65mV point, bias would either move a lot or hardly at all. I got to the point that I turned the bias all the way down to minimum and then slowly working my way back. Still took more time zoning in than I thought it should have.
Is this normal? Or does it indicate, that a re-tube would indeed be timely. Or possibly something wrong with the pots or something else? Any thoughts? Thanks
Here's the Q. Bias wasn't all that far off, but since I was checking anyway, I thought I'd true up the bias to 65mV. I found that as I made small adjustments to the biasing pots around the 65mV point, bias would either move a lot or hardly at all. I got to the point that I turned the bias all the way down to minimum and then slowly working my way back. Still took more time zoning in than I thought it should have.
Is this normal? Or does it indicate, that a re-tube would indeed be timely. Or possibly something wrong with the pots or something else? Any thoughts? Thanks