Features 2.0" (51 MM) Voice Coil Neodymium Ring Magnet Assembly IP52 Rated Paper Cone with Treated Cloth Surround Die-Cast Aluminum Basket with Radial Venting Specifications Power Handling: 200 Watts Dynamic Wattage: 400 Watts Frequency Response: 85Hz - 11KHz Sensitivity (1w/1m): 94.4 dB Nominal Impedance: 4Ω Dimensions Overall Diameter: 6.51"/ 165.50 mm Mounting Depth: 2.72"/ 69 mm Cutout Diameter: 5.49"/ 139.38 mm