Sundown Audio M-Series M18 2000W Subwoofer

2000 Watts RMS / 4000 Watts Peak Available in Dual 1 and Dual 2 Ohm Configurations Mega Roll Surround and Frame Etched All Black Backplate Quad Stack Magnet Structure Parameter D1 Model D2 Model Re 2.12 Ω 4.12 Ω Fs 26.2 Hz 25.7 Hz Qms 5.4520 5.3790 Qes 0.7820 0.7400 Qts 0.6840 0.6500 Vas 112.182 L 117.530 L Mms 651.24 g 638.99 g Cms 0.06 mm/N 0.06 mm/N BL 17.044 T·m 24.026 T·m Le 1.80 mH 3.55 mH Sd 1641.9 cm² 1641.9 cm² Xmax 35mm 35mm Xmech 59.5mm 59.5mm SPL (1W/1m) 85.8 dB 86.1 dB Specification D1 Model D2 Model RMS Power 2000 W 2000 W Peak Power 4000 W 4000 W Displacement 0.25cu.ft. 0.25cu.ft. Mounting Depth 14.05″ 14.05″ Outside Diameter 18.46″ 18.46″ Cutout Diameter 16.68″ 16.68″ Motor Diameter 7.87″ 7.87″ Sealed Enclosure 5-6 CU FT 5-6 CU FT Ported Enclosure 7.0cu ft 7.0cu ft Recommended Port Tuning 32 32 Recommended Port Area 112sq in 112sq in Xmax 35mm 35mm Xmech 59.5mm 59.5mm 4th Order Sealed 3.0cu ft 3.0cu ft 4th Order Ported 9.0cu ft 9.0cu ft 4th Order Port Area 180sq in 180sq in 4th Order Port Length 8″ 8″