Hi all,
Just a quick one about the resistors and caps I'm about to order for rigging up a cathode bias in a 4 x 6V6 output stage (loosely based on a Fender Pro Reverb but 4 x 6V6 instead of 2 X 6L6, ~430V B+ at the output tube plates).
I've calculated out that I need a 470 to 500 ohm 5 watt cathode resistor per tube and am going to use a 100uf bypass cap.
Does anyone have any recommendations about sharing the cathode resistor between all 4 tubes? If I understand correctly, all that generally needs to be done is multiply the resistor value by the number of cathodes (thus giving me a 1.8k to 2.2k resistance). To me, this seems like the best way ahead from a layout standpoint rather than having 4 big resistors and their bypass caps.
Please feel free to chime in if I'm way off base or if you have some useful input!
--SRT
Just a quick one about the resistors and caps I'm about to order for rigging up a cathode bias in a 4 x 6V6 output stage (loosely based on a Fender Pro Reverb but 4 x 6V6 instead of 2 X 6L6, ~430V B+ at the output tube plates).
I've calculated out that I need a 470 to 500 ohm 5 watt cathode resistor per tube and am going to use a 100uf bypass cap.
Does anyone have any recommendations about sharing the cathode resistor between all 4 tubes? If I understand correctly, all that generally needs to be done is multiply the resistor value by the number of cathodes (thus giving me a 1.8k to 2.2k resistance). To me, this seems like the best way ahead from a layout standpoint rather than having 4 big resistors and their bypass caps.
Please feel free to chime in if I'm way off base or if you have some useful input!
--SRT
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