Rated Impedance : 8Ω ± 15% at  200  Hz
Rated Power : 30 W
Max.Power :   60W
Sensitivity(1W/M): 89dB ± 3dB , 1W/1M  at    400,500,600,700   Hz-Avg.
Frequency Range :  70 Hz ~20KHz   -10dB / ±20% Hz
Resonance Frequency : 90 Hz ± 20%
Whistling :  9 Volts  
D.C Resistance (Rdc) :  6Ω ± 10 %
Membrane : PP cone and rubber surround
Baffle : ABS / White
Dimension(Dia*H): 197  x   94.5  mm
Weight: 1.4 kgs