Ground Zero 12.300X Bass kit

?Amplifier: - 2 Channel Class A/B ?- RMS Power @ 4 ? (14.6V) 2 x 60 W ?- RMS Power @ 2 ? (14.6V 2 x 80 W ??- RMS Power @ 4 ? (14.6V)1 x 200 W ?- MAX Power @ 4 ? Gebru?ckt (14.6V) 1 x 300 W ?- Lowpass: 50 ? 250 Hz ?- ?Bass Boost: 0 ? 6 dB ( 45 Hz ) ??- Frequency response: 5 Hz ? 30 KHz ?- Input sensitivity: 150 mV ? 5 V ?- Auto-On @ High Input ?- Dimensions / overall W x H x L (mm/inch) ?180 x 236 x 53 mm / 7.09? x 9.29? x 2.09? Subwoofer: - ?Type: 30 cm / 12? with Aeroport tube ?- Power handling: 300 W ?- Impedance: 4 Ohm ?- Volume netto: 40 Liter / 1.41 cu.ft - Port tune 35Hz -?? Dimensions L x H x D (mm-inch): 560 x 360 x 350/250 mm / 22.05? x 14.17? x 13.78?/9.84?