Tube Amps / Music Electronics
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|7/10/2000 2:59 PM|
|Tom L||Another V-4 Question|
There sure seem to be a lot of V-4s floating around lately. Graywater, are you in Texas too?
I notice that the V-4 has resistors between the plates of the power tubes and the OT. It seems to me that this provides a means to measure plate current without the inaccuracy of the OT shunt method. Joe Piazza's schematic shows these resistors as 10 ohm, 5 watt; my amp has 3.6 ohm, and the schematic inside the amp says "P.I." ("proprietary information"?).
I can't find another amp design (except the SVT) that has resistors there. So what is their purpose?