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October 22, 2025, 06:04:43 pm
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Hoffman Amps Forum image Author Topic: Switching cap across plate resistor  (Read 1364 times)

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Offline Sonny ReVerb

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Switching cap across plate resistor
« on: September 11, 2025, 07:59:41 pm »
I'm considering a single channel Vibrolux 6g11a. I'd like to put the bright cap and the 'dull' cap on a DPDT switch to alternate between a Bright and a Normal channel. The Bright position would add the bright cap and remove the dull cap and vice-versa for the Normal position. I've often done a bright switch across a volume pot, but I haven't tried a cap with a switch across a plate resistor. Would this require a de-pop resistor or something?

Offline Merlin

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Re: Switching cap across plate resistor
« Reply #1 on: September 12, 2025, 04:27:08 am »
You might get away without a de-pop resistor but why not include it anyway? I would recommend switching the cap to ground rather than across the plate resistor (amp response is the same either way), so there is no need for high voltage DC on the switch.

Offline Sonny ReVerb

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Re: Switching cap across plate resistor
« Reply #2 on: September 12, 2025, 06:58:43 am »
I'll give that a try. Thanks for the help!

 


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