��s 51PDFT10 is an all-in-one bass solution that matches a powerful, 100-watt internal amplifier with a 10-inch subwoofer for clean, ground-pounding sound. The tough, wedge-shaped enclosure fits under or behind most seats and allows for a forward-firing position, or it can lie flat in a down-firing position for ultimate woofer protection. The PDFT10 works with most factory radios and comes with a quick-connect harness for power, ground, and signal, as well as hardware everything needed for plug-and-play installation. The included remote bass knob makes volume adjustment a breeze. 51PDFT10 New Car Subwoofer,10 inches Unique, compact enclosure fits under or behind most vehicle seats and in trunks Award-winning, 10-inch subwoofer delivers deep, extended bass High-efficiency, Class-D power amplifier with 100 watts (RMS at 144v) built into the enclosure Features a 0-180�� phase switch and +6dB KickEQ? bass boost for enhanced sound control