2. amps-preamps
  3. 1296699413

2ch amp and HT receiver connected to same speakers

I listen to 95% music and 5% home theater. My 2ch system is a BAT pre and a Bryston amp, and I have an Integra receiver for theater. My BAT has a HT pass-through function, so that I can run my LR speakers off my Bryston amp. This setup causes a ground loop, however, and I've given up trying to eliminate it. So I wonder if I can connect both my 2ch amp and the LR outputs of my receiver to my speakers. Would this harm my amp (especially the Bryston)? Would it hurt the sound quality of my music? Thanks for any comments.
slanski62

Showing 2 responses by summitav

summitav
163 posts
 
Thanks everyone for the helpful comments. Regarding the ground loop, I have all my equipment powered by the same dedicated circuit. I have also tried the Granite State Ground Control and a cheater plug with minimal effect. The only input to the HT receiver is my DVD player via HDMI. The HT receiver outputs to my Projector, also via HMDI, and to my 2ch preamp via RCA. Thanks for any other ideas!

Try this simple test. When you can hear the HUM, simply walk to the wall (no place else. It HAS to be at the wall) and unscrew the coax CABLE at its very entrance to the room. If the HUM stops, then it is your incoming cable not being grounded.

If it does not then you have your work cut out for U.
summitav
163 posts
 
Summitav, are you saying that the CATV coax would cause a hum even if it is not connected to my HT receiver?

Sometimes yes. Chances are it has a connection somehwere, if even to the same electircal wiring in your house.

It is simple enough to listen for the hum, and just unscrew the coax (AT THE WALL)

If the HUM stops, then you know the cause.

Then to find out what to do about it.
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