Rated Impedance: 8 Ω ± 15% at  500  Hz
Rated Power: 30 W
Max.Power: 50 W
Sensitivity: 86 dB ± 3dB , 1W/1M 
Frequency Range : 40 Hz ~ 20K Hz  -10dB / ±20% Hz
Resonance Frequency: 50 Hz ± 20%
Whistling: 9 Volts
Termination: Binding Post
Baffle: ABS
Mesh Grille: Steel
Dimension: 233 ^Ф x  92 ^H mm
Weight: 1.3 kgs