Had to buy a shallow mount sub to fit beneath my seat in my Silverado, mounting depth in the enclosure was only 4 1/2 inches. Sub was easy to install in my newly purchased Audio Enhancers SGMX66R12 box. This sub is powered with an 800w Crunch V850 amplifier that is running roughly 175W RMS. This sub is hitting harder then my Audiobahn AW101T (I think it’s because the audiobahn needs a 1.2 cu.ft. box.). Needless to say it amazed me it sounded this good. Should get better as it breaks in. For 46 dollars shipped it was well worth the money.