After much tuning around with the headunit, amps and the Auto EQ Mic, I now hear the bass that I was missing. I turned off LPF/HPF on my both of my amps and decided to use the HU crossover...WOW! It made a big difference!! For the subwoofer, I placed the crossover at 50hz with a slope of -6db (since I'm only looking for the low bass frequency), next I placed the HPF for both my front and rear speakers at 200Hz with a slope of -6db. I used the Auto EQ Mic, adjusted the Listening Position (Front Left) and BAM!!! My sound was booming!! Started hearing my Low Bass, Crisp Highs and Clear Mids