Description: The PTRTP combines an active, award-winning CompRT subwoofer, a passive reFLEX sub, and a power-matched, built-in amplifier for an efficient, pounding bass solution for your ride. Features: Compact, factory-tuned enclosure for tight locations to fit many trucks and SUVs 10-inch Sub with 400-watt amp Amp is built-in and power-matched for hard-hitting bass Easily integrates with factory system Down-firing for ultimate driver protection Thick, tough internal bracing to resist stacking weight Active CompRT Sub matched with passive reFLEX™ sub for extra output Remote bass control included Specifications: Type: Powered down-fire Woofer Size (in): 10 RMS Power (watts at 14.4v): 400 Phase Switch: 0-180° Frequency Response (Hz): 25-120 S-to-N Ratio (A-weighted, re: rated power): >90dB Input Sensitivity: Low Level – 125mV-5V; High Level – 1V-40V Crossover: Active 12dB/octave, variable 50-120Hz low pass; 12dB/octave, high pass at 25Hz Box Height (in, cm): 6, 15.2 Box Depth (in, cm): 13-1/4, 33.5 Box Width (in, cm): 25-5/8, 65