Kicker 48TRTP102 Sub 10 Inch Down Firing Subwoofer Loaded Enclosure 400w RMSTRTP COMPRT 10" DOWN FIRING LOADED ENCLOSURE 2 OHM 48TRTP102 Fitting perfectly under your truck seat or in the trunk, ultra efficient TRTP Down Firing Loaded Enclosures deliver huge bass without taking up needed cargo room. They come loaded with a passive reFLEX subwoofer and CompRT active sub that provides extremely low bass. The TRTP 10 inch Subwoofer Enclosure is the easiest way to get great bass under your seat, in your cargo area or in the trunk.