MICROPHONE VM-58A

 
 Element: Moving Coil Dynamic
 Polar Pattern: Uni-Directional
 Frequency: 50Hz - 15KHZ
 Sensitivity: -73dB±3dB (0dB = 1V/Pa at 1Khz)
 Output Impedance: 600Ω (at 1KHz)

                           Measured at 1000Hz