I would suspect that cable. What more can you tell us about it? the chip sets in the self powered cables can be dicey at that length. if a new cable is possible I would look to Metra.
Jack Rainey - Full disclosure...reformed integrator, now mid-Atlantic manufacturers rep for: Integra, Paradigm, Anthem, Parasound, Atlona, LG TV's and Metra Home Theater...among others
