lag

Hello! I'm running one Alpine SWR-1043D (dvc) at 2 ohm from a Hifonics BRZ1200.1D amp. It's in a custom sealed enclosure (XJ cubby subs made by DoubleTapXJ on CherokeeForum). My problem is that the sub seems to have a progressive delay. The bass will hit accurately but will fall behind. I've...

hello i dont know what its wrong with my stereo but when i use my bass knob and turn it to max it starts to drop the mids and highs and the bass sounds weak. when i have the knob at halfway everything works perfect, but i dont know why my music turns weak when i max out the bass?? I dont know...