I have a Kicker ZX 400.1 with an Axxess LOC608 (wired to speaker lines in back, RCA connected to amp. Worked fine for several months and then the sub started only working intermittently. Sometimes playing with the RCA connections will coax it to work, and once I can get it to work, it will work normally until I turn off the car. But starting the car 5 minutes later it may not work. The amp has power at all times, the fuse is fine and all connections are solid. It seems like the LOC is the problem since messing with the RCA will solve it every now and then. any suggestions?