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
uncertainsmile
88 posts
 
cheater plugs are dangerous. use a mondial or jensen product(search audioholics).
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...
audphile1's avatar
audphile1
4,373 posts
 
Eagleman6722, unlike hum, hiss is not caused by ground loop problems. As far as I know.
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