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Dynaco-Doctor Forum Welcome! Need support, you got it. Or share your ideas and experiences. |
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Dynaco-Doctor Forum Welcome! Need support, you got it. Or share your ideas and experiences. |
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In Reply to: New Tubes (6CA7)--now bias too high posted by daveap on February 8, 2016 at 17:15:07:
My suggestion would be to put back a set of the old tubes and see what your readings are. If they read fine you can still use your new tubes but you might have to change the bias resistor to a lower value on the bias power supply to let more bias voltage into the tubes. I've had to do that on various occasions with different EL-34's.
I don't know if Joe's bias mod will correct the issue. He would know more than me on the subject but I would start with a simple thing first and work from there.
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- RE: New Tubes (6CA7)--now bias too high - xaudiomanx 14:24:10 02/15/16 (0)
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