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Tubes Asylum Questions about tubes and gear that glows. FAQ |
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Tubes Asylum Questions about tubes and gear that glows. FAQ |
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In Reply to: Biasing KT-77s in a Conrad-Johnson MV-60 posted by RhythmDevil on March 4, 2016 at 08:01:27:
...refining my question...
So, the LED lights when the bias is set "just right plus a skosh".
Presumably, that means that the LED turns on when a voltage reaches a certain level; one guess would be that this is the voltage across a resistor, and indicates some optimal bias current (xx mA).
But if I can't make a KT-77 "light" the LED, is that purely a function of this tube, or can the need to replace *other* tubes (eg, the 12AX7 input and 6SN7 driver tube) be a reason that the KT-77s behave this way?
Trying to understand better....
Cerebrate!
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Follow Ups
- RE: Biasing KT-77s in a Conrad-Johnson MV-60 - RhythmDevil 08:05:45 03/05/16 (0)
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