frame diameter: 260 mm (10 in) Nominal impedance: 8Ω VOICE COIL DC resistance: 5.4 Ω Nominal power handling: 250W Continuous power handling: 500 W Sensitivity (SPL1W/1m): 94.4 +/-2 dB Frequency range: F0~3 kHz Voice coil diameter: 65mm (2.5 in) Winding material: aluminium Diaphragm material: PAPER Magnet material: Neodymium