DD Audio 9518J D1

-18″ subwoofer - cast frame - 2 x 1 ohm voicecoil - 3.35″ voice coil diameter - driver displacement: 7 liter - recommended ported enclosure 140-170 liters ( NET ) - power handling 2000 W RMS - peak power handling 8000 watts - x-max: +- 22 mm - xmech: 100 mm - qts: 0,667 - Fs: 36,34 Hz - Vas: 106,018 liters - mounting depth 271 mm - cutout diameter 429 mm.