Axiom Home Page Forums General Discussion Technical Questions Subwoofer Hum, Dish Satellite Receiver

I have a hum coming out of Sunfire Signature Sub. I've isolated the source to be the Dish Network Satellite--I disconnect the coax cable going to the dish receiver and the hum stops. I've tried using matching 75-300 ohm transformers, but the digital signal does not go through to the dish receiver. I have an older Panamax 1000 from which all the equipment is plugged into. I tried using the coax terminals on the Panamax, but the signal still does not go through to the receiver. The dish satellite is grounded to a cold water pipe outside. So I'm not sure what my options are?!?! I greatly appreciate any advice. Equipment: Sunfire Theater Grand 3, Sunfire Signature Amp.