Optimized for four or eight ohm installations 8-in Dual 4-ohm High-Performance Subwoofer 750W MAX / 250W RMS Power Handling Proprietary Stamped Cast Vega Basket Design Optimized High Power Single-Stacked Motor Structure Parabolic One Piece Stamped Carbon Fiber Poly Cone High Power Integrated Impedance Selector Proprietary Horizontal Mounted Spring Loaded Terminals Proprietary Horizontal Mounted Spring Loaded Terminals Total Diameter (A) 8.74 Inch 222 mm Mounting Diameter (B) 7.08 Inch 180 mm Screw Hole Diameter (C) 0.63 Inch 16 mm Mounting Depth (D) 4.4 Inch 112 mm Magnet Diameter (E) 4.64 Inch 118 mm Displacement (ft3/L) 0.03 Cubic Feet 0.96 L Weight (.lbs/Kg) 7 .lbs 3.15 Kg Normal 0 false false false EN-US X-NONE X-NONE / Style Definitions / table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-parent: ; mso-padding-alt:0in 5.4pt 0in 5.4pt; mso-para-margin:0in; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:11.0pt; font-family:"Calibri",sans-serif; mso-ascii-font-family:Calibri; mso-ascii-theme-font:minor-latin; mso-hansi-font-family:Calibri; mso-hansi-theme-font:minor-latin;}