This is what I have - Clarion DVD head unit with a 7 inch flip out monitor , 2x Kicker CVX 12 inch Dual 4 ohm (750rms) each wired to 1 ohm in a sealed box , Orion 2400D mono channel amp wired @ 1200 watts rms 1 ohm , Memphis M-class 4 channel 75 rms x 4 , Memphis 6x9 in the rear 85 rms each , Eclipse 5.25 inch 3 way components in the front . Optima red top under the hood , Optima yellow top in the trunk , and a Kinetics cap-killer equivelent to 100 1:farad caps .

My Qeustion is - How do you determine what frequency to set the mono amp up to for my subs to perform there best ? I can set it anywhere from 20 hz and up .

Lowpass- 60-80hz

highpass- as low as possible since the woofers are sealed

Welcome and what he said

Good to have another Chicago peson on here.