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Vintage threads from the first ten years
Bias set too low?
 8/25/1999 5:18 PM |
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Aron | Bias set too low? I've been measuring my bias current on my Fender 64' Bassman and while I have not put the 1ohm resistors to ground so I can measure my current draw (need a stronger iron), I have been able to measure the negative bias voltage. It's -61 volts and it seems like it should be -54 volts on the schematic. Another thing is that I measured the supposedly 27K 1 watt resistor and it measured closer to 22K! Anyway, I would imagine for my amp that anything lower than 27K should give me a less negative voltage anyway. I guess too negative a voltage cannot hurt anything but once I get the resistors in, I will be able to tell a lot more. |
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