SteadyEddie wrote:Yeah, I bias based on plate voltage. How do you account for the screen current? That's a variable I haven't considered.
The 1K screen resistor takes care of that. Best bet is to keep it at or under 70% max dissipation at idle. I like about 65% based on my ears personally. Of course it depends upon the tube. Subjective at this point. If you crank the bias, just watch for red-plating.
"I don't like country music, but I don't mean to denigrate those who do. And for the people who like country music, denigrate means 'put down' " - Bob Newhart