Cant bias tubes to correct number.
Which resistor needs to change and do I ho up or down?
JTM45 Reissue cant be biased
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Re: JTM45 Reissue cant be biased
On the board there is a resistor in series with the bias pot (47k or 56k typically).
As they bias voltage is negative if you want a more negative voltage you need to raise the value of the resistor (shunt less voltage to ground) or visa versa.
As they bias voltage is negative if you want a more negative voltage you need to raise the value of the resistor (shunt less voltage to ground) or visa versa.
Neil