Kapton coil former Polyamide-imide coated copper voice coil Ferrite magnet Vented and extended pole piece Pressed steel basket Paper cone Cloth double half-roll surround * Power Handling (RMS) 500 Watts Power Handling (max) 1,000 Watts Impedance 8 ohms * Frequency Response 42 to 3,200 Hz Sensitivity 96 dB 1W/1m Voice Coil Diameter 2.5" Magnet Weight 56 ounce