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In Reply to: RE: Cary SLI-80 tube bias posted by akolegov on March 03, 2016 at 14:26:56
Not long ago I contacted Cary about bias for KT77 tubes and their recommendation was 50-60 ma. I believe my manual says bias for stock tubes, KT88 or 6550's, is 75-100 ma.
Follow Ups:
That is for more than one tube, yes?
"Little details" like that are critical. That's why people need to pay attention to the maker's bias recommendations. That's not to say you can't try different settings, but the "spec" is a very good place to start.
Yes Jim,
The Cary has a bias pot for each set of two tubes.
I try to keep the bias set at 75-85 ma on KT88, KT120, and 6550 tubes.
Haven't experimented with any higher or lower settings.
Edits: 03/04/16
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