2. amps-preamps
  3. 1013299943

Buzz originating from amp...please help ?

I bought a Pass X250 through Audiogon and when hooked up to my system, a hum or buzz is coming out of the tweeters and midrange speakers on both channels. After exhaustive trial and error, I find that the buzz does not exist when the amp is not hooked up to any other component. It is of course connected to the speakers. If I attach a pair of interconnects to the amp (whether or not these interconnects are connected to the preamp), the buzz comes back. Does anybody have any ideas what I should try, or what the problem may be? Thanks for any imput.
jcambron

Showing 3 responses by jcambron

jcambron OP
21 posts
 
Alexanderj...I am using single ended IC's with the shorting pins in place in the unused balanced imputs. I am going to borrow some balanced interconnects one day next week and see if that helps anything at all.

Thanks
jcambron OP
21 posts
 
I have tried using a cheater plug on the amp as well as all other components in the system with the same result. I have also used an ungrounded cord on this amp which I borrowed from a subwoofer and got the same buzz as before.

Thanks.
jcambron OP
21 posts
 
Thanks Nels and Ligi for the response. My audio room is located where my home theatre used to be. The only remnants of the home theatre are the double coax cables that were attached to my DSS/Tivo receiver. While the cables are no longer attached to the satellite dish, they are still grounded. These coax cables are lying within 5 feet of my amp. I will move these right away and see if that helps any.

Jim
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