Rated Impedance: 163.3Ω (30 W),326.6Ω (15W),653.3Ω (7.5W),

                 1289.4Ω (3.8W),2722.2Ω (1.8W)
Rated Power: 30 W
Max. Power: 45 W
Sensitivity: 97 dB ± 3dB , 1W/1M 
Frequency Range : 350 Hz ~ 6KHz  -10dB / ±20% Hz
Whistling : 35  Volts   
Rated Voltage: 70/25 V Power Taps              
                      70V：30-15-7.5-3.8-1.8W      
                      25V：15-7.5-3.7-1.8W
Dimension: 272 Фx 267 D mm
Weight: 2.1 kg