Not the most straightforward question, but here goes. I've got a Russound CAM6.6 in my basement along with 2 DirectTV satellite receivers going through a Video Storm Matrix switch. The video and audio is going via cat5 baluns to the upstairs. In one room I have a Samsung TV that is getting the audio and video just fine. However, when I turn on the Russound keypad for that zone using the same satellite receiver as the source, I get an echo effect in the room if the TV volume is up. I can't really tell which signal is behind the other. Anybody have any ideas?