11-10-2015, 02:54 PM
On the 75 and the 6a7 tubes the P-K voltages are a balance between the bias voltage and the load resistor. There must be some bad resistor values related here.
First what are the bias voltages on these two tubes?
First what are the bias voltages on these two tubes?
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[Image: http://philcoradio.com/phorum/images/smi...on_eek.gif] Chris