I am in the process of building a Stryke thunder 12.3 with the PE 500 watt plate amp. The driver is on back order but I have the amp already and decided to play around with it. I hooked it up to my receiver (pioneer 1014) and took the subwoofer out of my truck and hooked it up. The result was a loud hum from the subwoofer and makes its back into my receiver and through my mains. I unhooked everything from my reciever and with just a cd player there is no hum. Putting everything back one piece at a time resulted in the problem coming from my satallite line. The line that runs from the dish to the receiver is causing the problem. The line is grounded to a water pipe, and to make sure I took another wire and ran it to a real electrical ground, and the hum remains. Switching power plugs also has no effect. I currently have a crappy aiwa subwoofer hooked up and there are no problems. Has anybody else had a problem like this , or know how to fix it?