reverse refers the the phase the sub moves at, in or out on bass hits, tune it to your liking, it will sound right to you one way or the other... as far as htz, for your sub, this would be the crossover, on lpf for my sub it is set at 80, and on the hpf it is set at 80... one of your pre set eq options should be flat... use that to set your gains. and make sure your crossover knob on the amp is set at about where 80 should be. on those kicker amps it's from 50 to 200 and each line represents an increment of 25, so just after the first line after 50... thats how i do it... are you running an amp for the front stage?