I have a Alpine HU that allows me to adjust the LP and HP crossover freq. I have set my LP to 80hz. My Amp also has a setting for LP 20 - 300hz, I currently have it set off, since I can't turn off my Alpine HU LP crossover. Should I set both my amp and HU crossover at 80Hz, I running 2 12" R12's, and 1000watt amp. It sounds good, however I just want the bass that carries.....