frame diameter: 155 mm (6 in) Nominal impedance: 8Ω VOICE COIL DC resistance: 6Ω/400Hz Nominal power handling: 150W Continuous power handling: 300 W Sensitivity (SPL1W/1m): 96 +/-2 dB Frequency range: F0~3 kHz Voice coil diameter: 55mm (2 in) Winding material: aluminium Diaphragm material: PAPER Magnet material: Neodymium