Empty Subwoofer Boxes. Utilizing a single 10", 1,200 watt max power subwoofer, which is pre-wired and loaded inside of the precision fit, hand-laid, fiberglass molded enclosure. The Skar Audio SDR-10 D2 subwoofer that is featured within this sealed enclosure (pre-wired to a 1-ohm final impedance load) is very powerful and efficient, providing exceptionally deep and responsive bass output.
eBay