rite ive got a alpine 45w x 4 amplifier cde-9801r head unit that in going to power just door speakers (upgrading today) ive got a vibe cbr 10" active subwoofer with built in amp . now unsure how to set 3 buttons on amp

1 : 180 phase 0 button
2 : crossover 40 to 160 hz
3 : level button min to max

any help please as just going into my transit connect