10″ subwoofer shallow mount version Power handling (RMS) 300 W recommended amplifier 150-500 W 2″ voice coil wounded of copper wire 2x 2 ohm voice coils fs 45.1 Hz qts 0.564 vas 24.1 L sensitivity 85 dB / 1W/1m x-max 20 mm IMPP-cone installation diameter 232 mm installation depth 88 mm recommended sealed enclosure 30 liters recommended ported enclosure 30 liters ( tuned to 41 Hz ).