Questions for biasing with variac...

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rgorke
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Re: Questions for biasing with variac...

Post by rgorke » Sun Dec 29, 2013 11:23 am

jof006 wrote:So is there a sweet spot for the bias percentage with the variac, or is it not that important?
rgorke wrote:My inner two tubes are biased at 14mv and my outer two are biased at 24mv. Pretty cold but great tone.
Assuming the same plate voltage as erupturchops' first post (360V), and taking the average of 19mA, this gives an idle Pd of roughly 27% of Pdmax.
What % are others using, or as I said above, is it not that important?
I really don't think there is a magic number, mainly using your ears.
"If you make a mistake, do it twice and smile and let people think you meant it." Jan Van Halen.
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