Maximum Power: 900W Frequency Response: 46Hz-2.0kHz Voice Coil Diameter: 3", 76.2mm Depth: 6.00", 152.4mm Coil Construction: Copper Voice coil Magnet Composition: Neodymium magnet Cone composition: Treated Paper Cone Nominal Basket Diameter:12", 305mm Sensitivity: 95.5 Magnet Weight: 11 ounce Core Details: Vented core Coil Former: Kapton