No bass when Switched to CD or AUX on head unit.
Alright, so heres the deal, I just hooked up two 10" rockford fosgate P1s along with a jbl bp600.1 amp. Everything sounds awesome when the radio is plahying. But when i switch it to CD or the AUX for my IPhone the amp switches off. Why is it doing this? Everything is hooked up right. Looked in my manual i had for my head unit. But it says nothing about it of course. Any solutions???