Hey folks, so i have a ground problem. I solved this with my main system using ATI amps like the AT528NC in my main living room but i wanted to go a bit cheaper and go with the monolith 7x200 watt amps. So i did exactly the same electrical wiring, dedicated 20 amp circuits to a sub panel made sure the grounds were starred everything. But that dreaded hum is there even using XLR cables from the marantz av7706. I even connected the chassis ground from each amp to my receivers ground screw but still no joy. Found out it was the directv coax cable. Now in the past i spent alot of money getting everything properly grounded on my directv system. This was the same issue i had using cheaper amps on my main audio system but when i upgraded to the ATI amps which are $$$$ than a monolith the issue was gone. I have done just about everything trying to fix the ground but that just isn't going to happen. So what are the thoughts on lifting the ground on pin 1 of each XLR? I really hate to do this but i dont know any other way to fix this. Is this going to effect my audio much? I tried to find something to lift the coax ground and when i stripped a coax down to bare wire and hooked up the receiver without a ground on the coax hum is gone however there is no possible way to terminate the RG6 cable without the shield touching. If i could find a way to do that, that would be preferred. But the ground lifts i saw only go from 5 to 1000 and none will work on directv because of the high frequency needs. So im stuck unless there is a way to jump the ground out of this coax. Just want some thoughts, ideas or what happens when i lift pin 1 of the XLR?