Like New 10inch Enclosed Subwoofer With Built-in 300 Watt Amplifier Subwoofer Features: 10″ Shallow design subwoofer with grille High excursion design for deep bass Injected molded polypropylene cone with rubber surround Frequency Response: 40Hz ~ 250Hz Nominal impedance: 4 Ohms Amplifier Features: Class A/B amplifier Surface Mount Device (SMD) Design for efficient power MOSFET power supply RCA & speaker wire inputs: Connect easily to almost any car stereo Peak power: 300 Watts RMS power: 100 Watts Variable low pass crossover: 50Hz ~ 250Hz Phase Switch: 0 ~ 180 Operating Voltage: 11.0VDC ~ 14.4VDC Allowed Fuse: 15 Amp ATO Type Enclosure Features: Sealed enclosure for accurate bass reproduction Acoustically matched subwoofer / enclosure combination Durable slim line carpeted enclosure Dimensions: 11.5″ (H) x 7.3″ Bottom / 6.2″ Top (D) x 15.8″ (W)