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Post by shushota1 on Jan 11, 2005 0:41:54 GMT -5
What should the bias current be set at on my 5150 II? I have jj's in it. And i just did the mod where i changed the resistor for the 15k to a 6.8k.
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Post by Jerry P on Jan 11, 2005 2:33:53 GMT -5
What should the bias current be set at on my 5150 II? I have jj's in it. And i just did the mod where i changed the resistor for the 15k to a 6.8k. There's no magic number for bias. Set it to what ever sounds best to your ears that's within the safe bias range. Jerry |
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Post by shushota1 on Jan 12, 2005 1:30:17 GMT -5
Sorry thats what I meant....., whats the safe range that the bias should be set at?  on the 5150 II. |
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Post by Jerry P on Jan 13, 2005 14:58:53 GMT -5
If you click on the links page of my site there a link to Duncan Amps where you can find some good info about biasing. I think webervst.com has a bias calculator on their site. You punch in the plate voltage and it gives you the proper bias settings. The range varies amp to amp based on the plate voltage the tubes are running at. The idea is to be at 70% max plate dissipation or less and have it sound good to your ears.
Jerry
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on the 5150 II.