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- Sun Dec 21, 2008 7:07 pm
- Forum: Trainwreck Discussion
- Topic: Express rewire "correct" sockets still some hum
- Replies: 18
- Views: 4307
Re: Express rewire "correct" sockets still some hum
I am also preoccupied with hum in my builds. Have you tried swapping the heater wires on one of the power tubes so pin 2 goes to pin 2 and pin 7 goes to pin 7? My understanding is that these heater wires should be "in phase" with each other so the hum gets cancelled in the output tranny. It may not ...