COMPREHENSIVE PARAMETER frame diameter: 260 mm (10 in) Nominal impedance: 8Ω VOICE COIL DC resistance: 5.4Ω Nominal power handling: 250 W Continuous power handling: 250 W Sensitivity (SPL1W/1m): 99.5+/-2 dB Frequency range: F0~3 kHz Voice coil diameter: 65 mm (2.5 in) Winding material: aluminium Diaphragm material: PAPER Magnet material: Ferrite OHM Fms: 52.9Hz nref:2.65% Res: 38.0Ω bl: 21.6N/A Re: 12.3 Ω spl: 96.2dB Qms: 12.82 vas: 76.0L Qse:0.41 RP: 246.6Ω Qts: 0.40 LP: 95.5mH Rms:1.2 kg/s cp: 134.8μF Cms:0.19mm/N le: 1.34mH mms:46.9gr sd:530.9c�