Rated Impedance:  8 Ω± 15%  at  600  Hz
Rated Power: 20  W
Max.Power: 30  W
Sensitivity: 86 dB ± 3dB , 1W/1M
Frequency Range : 50 Hz ~ 10K Hz -10dB / ±20% Hz
Resonance Frequency: 75 Hz ± 20%
Whistling : 9 Volts
Termination: Binding Post
Baffle: ABS
Mesh Grille: Steel
Dimension: 201^Ф x  83 ^H mm
Weight: 1.2 kgs