Your receiver has a RCA output for the sub. Use that subwoofer pre out in solid white. Buy two RCA cables from monoprice.com Plug one into your receivers lfe out and to the wall plate then plug the second from the other wall plate To either the left or right Line Ine connection on your sub.
I acccept all friend requests with AVS in the message. Add me!!
PS4 PSNID = The-Barbeerian
Xbox One = The Barbeerian