Now I need some help, I want to keep this sub around unlike the last one. I just want to make sure everything is tuned perfectly on my amp. I put the subsonic frequency up to 30 just to make sure nothing happened. I have the bass boost on 2 (out of 18). The low pass filter is on 200. The sensitivity is maxed out. On my headunit, the subwoofer value I leave between 10 and 15, depending on how loud I want to get. Bass value stays on 0 and BBE is on 3 (alpine cda-9856). I normally listen around 10-12 volume, so I can still hear something else besides bass, but occasionally if I feel like rocking my socks off ill hit 16-18, and thats the most i'll go.