The L7T 10-inch Dual 2-Ohm Subwoofer works best with a sealed or ported enclosure and 500 watts of recommended power. ^^Legendary KICKER Solo-Baric square subs in the slimmest space ever! ^^The square cousin to the CompRT subwoofer, the L7T fits under your seat or in a corner of your trunk with ease. ^^KICKERs L7T Square Sub technology gives you up to 20% more cone area than a conventional round sub. ^^A next-level top-plate design, unique heat management system and our signature cone stitching all help to give you deep bass and outstanding reliability in a single, mind-blowing design that gives you max output!