Hi All,
I have 4 bias probes installed in a Marshall amp that uses EL34's
Two of the EL34's share an internal 1 ohm resistor between the cathodes and gnd
My question is are/will these 2 1R resistors affect the measurements of the bias probes at each of the probs have a 1R resistor in series with each of the cathode pins.
I have 4 bias probes installed in a Marshall amp that uses EL34's
Two of the EL34's share an internal 1 ohm resistor between the cathodes and gnd
My question is are/will these 2 1R resistors affect the measurements of the bias probes at each of the probs have a 1R resistor in series with each of the cathode pins.
I have a matched quad of Marshall VLV00010 (EL34) installed bias is good and stable at 45mv per plate which is great for a TSL100 !
When i put the Bias probe adaptors in the measurement run high and are unstable.
( bias probes have been checked and are in calibration ( bias probes are TAD BM4).
Could the fact there are 2 1R resistors in series with the cathodes upset the readings that much? 1 resistor for 2 cathodes in the amp and 1 resistor in each of the probes.
When i put the Bias probe adaptors in the measurement run high and are unstable.
( bias probes have been checked and are in calibration ( bias probes are TAD BM4).
Could the fact there are 2 1R resistors in series with the cathodes upset the readings that much? 1 resistor for 2 cathodes in the amp and 1 resistor in each of the probes.
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