frame diameter: 315 mm (12 in) Nominal impedance: 8Ω VOICE COIL DC resistance: 5.4 Ω/200Hz Nominal power handling: 1000W Continuous power handling: 1200 W Sensitivity (SPL1W/1m): 97 +/-2 dB Frequency range: F0~3 kHz Voice coil diameter: 75mm (3 in) Winding material: CCAW Diaphragm material: PAPER Magnet material: Neodymium