DD Audio Redline 818d D1

- 18″ subwoofer - 4″ voice coil - 2x 1 ohms - power handling 3000 W RMS - power handling 6000 W Peak - linear x-max +- 28 mm - x-mech 95 mm - fs 29.766 Hz - qts 0.536 - vas 100.28 liters - sensitivity 87 dB/1W/1m - mounting diameter 422 mm - mounting depth 288 mm - Vd 14,82 liters.