This is a 1000W Pioneer IMPP Premier Subwoofer. I screwed my 800W Pioneer Amp to the side of the Bullet box. The box has a bass tube which really helps on getting that deep bass.  All were purchased at Factory Auto Sound. I went into a bass competition and came in 1st in my division. Pushed 136dB. All in good condition.  Willing to make a deal. $400