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Hum in a triode 1H6G...help !

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aldovan

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Joined 2005
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Today I make experiences with a old DHT, the 1H6G.
This triode have 2V filaments and I use it as driver of a 2A3C.
The sound is ok, but this small triode have a lot de hum...
What I can make for reduce the hum ??
I necessary use a choke in the plate ?
I use DC in the filaments with not results...
Is necessary use a battery in the heater ?

Thanks,

Aldovan
 
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