I have a loud pop coming from all 4 speakers whenever I turn on my radio. I thought it was a bad RCA or something but I switched those out today for monster cables and it is still doing it. I installed the h/u first and there was no pop when I was running the speakers off deck power. Then I installed the amp and connected new speakers to that. Other than a little alternator whine that was fixed by the monster cables the amp and speakers are running fine except for the pop. What would I be checking for? Also, it doesnt do it with the RCAs disconnected.