The MTX TNP212DV 12 Inch 2000 Watt Dual Loaded Subwoofer Box Enclosure delivers unforgettable bass with the perfect combination of 12 inch subs, monoblock amp, and a box to boot. (4 pack) This dual 12 inch vented enclosure has a single terminal cup showing a final 2 ohm impedance load to any connected amplifier. The built in Terminator subwoofers feature durable, light polypropylene dust caps that stand up to the rigors of most trunks while using less power. Each subwoofer can handle 500 watts RMS power, resulting in a power level of 1000 watts RMS or 2000 watts max for the entire enclosure. The box measures 29.5 x 13.5 x 11 x 14 inches and is constructed with 0.625 inch MDF with tough carpet covering. The TNA500D is a 500 watt class D amplifier designed specifically to fit with this car audio setup so you'll be 1 step close to audio perfection right out of the box.