just hooked up my amp to my rear speakers, it is a profile cl600 amp and the speakers are polk db690. my problem is that no sounds comes out of my speakers, i have the rca to the head unit with the remote amp wire to the power control wire on the head unit which is supposed to turn on the amp as the head unit turns on. what can be wrong with my connection? is it the ground, the power the RCAS? i have tried em all... thanks please reply with any suggestions