Whether it"s an explosion or earthquake in a Hollywood motion picture, low notes from a bass guitar, or the subterranean rumble of a large cathedral pipe organ, the NXG NX-BAS-500 lets you feel as well as hear those extremely low frequencies, adding realism and excitement to your movies and music. This subwoofer"s high-output Class-D 500-watt amplifier pushes a 12" driver capable of delivering deep, bone-crushing bass even at concert-hall reference volume levels.