Ok, this totally baffles me when it comes to setting this stuff up. I have a MTX 6004 amp controlling my front MTX 6502's (6.5 in) and rear 4002's (4 in). I have a MTX 4001 amp controlling a 12" Sledgehammer in the trunk. How do I set up the Crossover and Parametric EQ for this stuff? Also do I turn all the settings up on the amp and let the HU control the rest?