2. amps-preamps
  3. 1140938796

ground loop HUM please help

I have pre tube amp ( supratek -Cortese) running a pair of Krell mono block FPB-250 . I have a loud hum when the preamp and the amp turn on . The hum goes away only if I used cheater plug for both preamp AND amp but I'm afraid it will damage the amp . Is there any other way to result the problem ?. thank you for any input
winsound

Showing 1 response by eagleman6722

eagleman6722
217 posts
 
I had the ground loop problem. I did two things that really helped.
1. I moved all the audio equipment to an adjacent wall with not other plug ins.
2. I moved the power cords so they were not touching. I now have a very low hiss which one can only hear if you put your ear to the speaker...
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