![]() The subwoofer is in the back of the room my options are limited in plugging everything into a single circuit.Īnything I can do besides trying a device that was mentioned earlier? I'd like to tackle and resolve this issue. So perhaps an Emotiva CMX-2 might do this in a safer way which some have recommended. So the only solution would be to use some device to lift the ground or use a balanced connection. That is the differing ground potentials may create a ground loop in an unbalanced connection. ![]() I do not have cable tv coax but do have a cable modem in the other room.īased on my research this is a biproduct of using a separate circuit for AV equipment and separate circuit for the subwoofer. I've already tested my outlets and the polarity and ground are all correct in the house. However, using a separate cable direct RCA end to end has the same effect. I am using an unbalanced RCA which goes to a RCA wall plate via Blue Jeans subwoofer cable and Belden RG-59 coaxial cable in wall. Edit: I bought a 10 ground loop noise isolator that did work, but it was for a specific purpose - I sometimes split audio out of my Scarlett 2i2 to my headphones and speakers and there was a loop doing that I guess. The AVR equipment and subwoofer are on a separate circuit. I mean the best would be HDMI to a receiver, but I don't want to mess with that. Knowing this is not a safe solution I removed it. I was told I need a ground loop isolator, but Ive had a search and cant find. I quickly used a ground lift adapter 3 prong to 2 as a test and the subwoofer is silent. One of my speakers is picking up interference from, probably, my alternator. The standard A/V receiver output is 600 yet most ground loop isolators on the market today have 200 at best. It's not loud enough to notice while listening but loud enough to be annoying when the room is quiet. Buy Earthquake Sound GLI-200 Hum and Buzz Kleaner 600 Ohm RCA in/Out Ground Loop Isolator: Signal Path & Pedal Tuners. I recently started to notice a hum from my Rythmik E15HP subwoofer.
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