Power Acoustik MOFO-152X 15" 3000 Watt / 1400w RMS Car Subwoofer Sub MOFO152X 15" Mofo X series 3,000 watt subwoofer . 1,400 watts RMS Rated . Size of each subwoofer: 15". Fs :29.999 . Qms :5.425. Vas :3.264. Xmax mm : 14. Xmech mm :21. Qes :0.585. Re : 3.80. Znom :4. BL : 18.407. RMS Power :1400. Qts :0.528. SPL :87.382. V.C. ; Motor Volume :373 Ounces Size (in.) : 3.0 . V.C. Imp :DVC 2 . Cut-out : 13.90 . Depth : 7.8 . Sealed :2.00 . F3 Hz :43.33 . Ported :3.00 . Port :4x12. Tune Freq. (Hz) :36.42 . F3 Hz :37.44 . ~Cloth/Paper Composite Cone . Blue Cast Aluminum Basket w/ Diamond Cut Accents . Chrome Back Plate. UV Coated Foam Surround . One Piece Rubber Gasket w/ Color Matched Inserts . Dual CONEX Spiders . Nickel Plated 8 ga. Compression Wire Terminal. With Aluminum Reinforcement Fins With Aluminum Dust Cap 15-inch competition woofer with patent pending heatsink Cloth Paper Composite 4-spline heatsink Dual Conex Spiders. UV coated foam surround.