Rated Impedance: 8Ω ± 15% at  600  Hz
Rated Power: 40 W
Max.Power: 80W
Sensitivity(1W/M): 88dB ± 3dB , 1W/1M 
Frequency Range : 60 Hz ~20KHz  -10dB / ±20% Hz
Resonance Frequency : 80 Hz ± 20%
Whistling:  9 Volts  
D.C Resistance (Rdc): 6.2Ω ±10 %
Membrane: PP cone and rubber surround
Baffle: ABS / White
Dimension: 243^Ф  x  111.5 ^H mm
Weight: 2.08 kgs