Is there any seperate bass and treble adjustments on the Z2 other than the EQ custom? I want to turn the bass down on my door speakers and let the subs handle the bass. As I turn up the deck my doors cant take the bass and start to distort and I have lots of volume left in the deck and speakers in the higher notes. My other though was to put bass caps on the doors but if there is a adjustment I can make even better.

turn the high pass filter on. That'll remove the bass from the door speakers.