Bass Control
Bass Frequency can be set at: 60Hz-70Hz-80Hz-90Hz-100Hz-130Hz-150Hz-180Hz
Band Width can be set at: Width 1-Width 2-Width 3-Width 4
I would start at 60hz and see how it sounds
Treble Control
Treble Frequency can be set at: 10.0kHz-12.5kHz-15.0kHz-17.5kHz
I usually set it at 12.5
High and Low Pass Filters
High Pass Filter can be set at: FLAT(off)-80Hz-120Hz-160Hz
Low Pass Filter can be set at: FLAT(off)-80Hz-120Hz-160Hz
Hp set at 80
Lp set at 80
These should give you a good base to start at then you can tune from there for personal preference. make sure if you use the xovers in the deck you are not also using the ones on the amps. I would use the ones on the amp instead of the radio one. Good luck and if you have any more questions let me know.