Impedance: 8 ohms Power Rating: 125W Maximum Power: Frequency Response: 70Hz-5.5kHz Voice Coil Diameter: 2", 50.8mm Depth: 5.07", 129mm Coil Construction: Copper voice coil Magnet Composition: Neodymium magnet Cone composition: Paper Cone Nominal Basket Diameter:12", 304.8mm Sensitivity: 101 Magnet Weight: 4 ounce Core Details: Non-vented core Coil Former: Polyimide former