Kapton coil former Polyamide-imide coated copper voice coil Ferrite magnet Extended pole piece Pressed steel basket Paper cone Cloth accordion surround * Power Handling (RMS) 250 Watts Power Handling (max) 500 Watts Impedance 8 ohms Frequency Response 58 to 3,000 Hz * Sensitivity 95.1 dB 1W/1m Voice Coil Diameter 2" Magnet Weight 38 ounce