I finally got around to clamping my amp and realized I had alot of box rise(around 2.5). I was wondering if anyone here had ideas of how to control this and how to get this down were my D2 sub can see more power at 1 ohm. For your information, I have an AQ HDC3 18 D2 in a removable port box tuned to 33 Hz on the daily and around 40 for the competition. Any help will be greatly appreciated.