Specifications: * 12 Inch Dual 2-ohm/4-ohm High-Performance Subwoofer * 1300 MAX / 450W RMS Power Handling * Double Stitched Vega Red Santoprene Surround * Optimized High Power Single-Stacked Motor Structure * Parabolic One Piece Stamped Carbon Fiber Poly Cone * Proprietary Stamped Cast Vega Basket Design * High Power Integrated Impedance Selector * SPL (dB) 85.6 Re (O) [series] 4.0/4.0 * Qms 8 Qes 0.71 * Qts 0.653 Fs (Hz) 27.4 * Vas (L) 62.3 Cms (mm/N) 0.42 * Mms (g) 184.6 Sd (m2) 0.049 * BL (T*M) 16.6 Xmax (mm) 17.3 * Pwr (W) NOM/MAX 450/1300 * DIMENSIONS * Total Diameter (A) 12.6 Inch 320 mm * Mounting Diameter (B) 10.7 Inch 272 mm * Screw Hole Diameter (C) 0.7 Inch 18 mm * Mounting Depth (D) 5.67 Inch 144 mm * Magnet Diameter (E) 6.53 Inch 166 mm * Displacement (ft3/L) 0.09 Cubic Feet 2.5