10″ subwoofer FLAT-edition 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 38.1 Hz qts 0.407 vas 27.1 liters sensitivity 87.5 dB / 1W/1m x-max 30 mm IMPP-cone installation diameter 232 mm installation depth 88 mm recommended sealed enclosure 24 liters recommended ported enclosure 40 liters ( tuned to 33 Hz )