Noisy hum pot on SE 2A3 amp

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Hi
I am using a 10 turn 50 ohm wire wound hum pot on my se 2A3 amplifier, I tweak the hum pots quite often as I change output tubes around quite a bit. One of the hum pots has gotten very noisy now when making adjustments (very loud crackle from speaker). Should I bypass the hum pot with a 47 ohm resistor from each end of the filament to the wiper of the pot? I have seen this done in some other schematics and wondered what was the purpose.
Would I be correct to assume the two additional resistors are there to ensure there is always a cathode return path in the event of the pot failing, or is there some other reason?
Thanks
Martin

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Topic - Noisy hum pot on SE 2A3 amp - Deco-Doctor 06:36:46 12/24/05 (4)

The parallel resistors divert current away from the pot - Lynn Olson 11:29:21 12/24/05 (1)

Re: The parallel resistors divert current away from the pot - Deco-Doctor 11:34:51 12/24/05 (0)

Re: Noisy hum pot on SE 2A3 amp - Matts_ 08:09:12 12/24/05 (1)

Re: Noisy hum pot on SE 2A3 amp - Deco-Doctor 09:17:29 12/24/05 (0)

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