John thanks for the info, Mark the sub is an ep800 which does have an XLR input but the receiver is the Denon 3808 so I'm stuck with an unbalanced cable run. What I can do is run the cable outside of the wall and if there's no noise hopefully/it sounds like most likely there will be no interference when I run the cable through the ceiling/wall.

"If you try to turn toward it, you go against it."