Specification  

Impedance (at KHz) : 600 Ω ± 30% 

Sensitivity : -53 ± 3 dB (0 dB = 1 V/pa at 1 kHz) 

Pattern : Unidirectional 

Frequency Response : 50 Hz ~ 15 KHz 

Dimension : 235 x 148 x 70 cm