Specs X10 Impedance zn 2x 2OHM Resonance Frequnecy fs 41,89 Power Handling watt RMS 800 Mechanical Q Qms 15,06 Electrical Q Qes 1,27 Total Q Qts 1,17 Xmax xmaxx in MM 50 Moving Mass mg in gram 173,67 Sensitivity Spl in DB 85 Mechanical Resistance Rms in Kg/g 4,0 Compltance Cms [in mm/N] 0,08 Force Factor BL in Tm 14,05 Equlvalent Volume Vas in L 27,96