I just got a new psw110 for christmas and that day with my old sony receiver it was working like a charm, I did my best to break it in. Then the next day i got a new receiver as another gift and its a Yamaha RX-V465. For the past couple of days it working perfectly fine. My subwoofer cable finally came in, was using a regular RCA cable, now all of a sudden the 110 makes these weird loud noises. I try changing the volume to see if that would fix it but whenever i touch the volume nob the noises get worse. I tried the original RCA cable i was using and its now doing the same exact problem that it is doing with the subwoofer cable. Now my question what is wrong with, can i fix it easily or should i just bring the sub back?