Sundown Audio X-Series v.3 18" Subwoofer

RMS 2000 watts Dual 1 or 2 ohm voice coil Made for extremely deep bass Triple-stacked magnet 3” voice coil Hyper-extended pole Built to order Designed with an extended pole piece and an incredible four inches of peak-to-peak excursion, the X v.3 is engineered for ultra-deep bass and high power handling. Engineered to set a new standard in the low-frequency/small-ported-box subwoofer category, the X Series can also work in up to a 50% larger enclosure if you desire even more low-end extension. The X v.3 series differentiates itself with its incredibly linear suspension, ensuring the lowest level of bass extension in a small enclosure while maintaining extremely low levels of distortion. Notably, the v.3 series features a much larger motor structure (220mm vs. 190mm on the v.1 series), improved motor ventilation, and an all-new Mega-Roll v.2 surround, providing a more linear and rugged update to the world-famous Mega-Roll v.1 surround design. Specifications RE (Ohms) 1.4 3.2 FS (Hz) 26.650 28.207 VAS (L) 130.302 109.935 Qes 0.526 0.657 Qms 2.793 3.091 Qts 0.442 0.542 Le (mH) BL (NA) 14.543 20.854 Mms (Grams) 474.114 504.115 Cms (uM/N) 75.224 63.154 Sens (dB @ 1w/1m) 88.6dB 87.6dB Xmax 30mm 30mm T/S SPECS X V.3 18″ D1 X V.3 18″ D2 Enclosure Specifications X v.3 18 Sealed Enclosure N/A Ported Enclosure 7.00 cu ft Recommended Tuning 32hz Recommended Port Area 112 sq in Displacement 0.23 cu ft Depth 13.6" Outside Diam. 18.42" Cutout 16.69" Physical Dimensions Download Enclosure Designs .Zip File