Ts-w312d4 12′′ champion series dvc 4 ohm component subwoofer 1,600w max / 500w rms -high power handling and high endurance. -deeper and louder bass. -heavy and sturdy structure. specifications: grade: champion series size: 30 cm (12") maximum music power: 1600 w rms: 500 w frequency response: 20 hz to 1.6 khz sensitivity ( 1w / 1m )92db impedance: dual 4ω mounting depth: 157 mm cut-out dimensions: ø283 mm resonance frequency: 37 hz xmax: 11.3 mm magnet weight: 2,540 g recommended enclosure: 35.4 liters