MICROPHONE
Type
Dynamic, Close-Talking
Frequency Response (at 8mm [5/16 in.]
50 to 15,000 Hz
Polar Pattern
Cardioid (unidirectional) response-uniform with frequency, symmetrical about axis
Impedance
Microphone rating impedance is 150 ohms (200 ohms actual) for connection to microphone inputs rated at 19 to 300 ohms
Microphone Sensitivity (close-talked at 1,000 Hz)
Open Circuit Voltage: -47.0 dBV/Pa*(4.5 mV)
*1Pa = 94 dB SPL
Hum Sensitivity (typical)
38.4 dB equivalent SPL in 1 m0e field
Polarity
Positive pressure on diaphragm produces positive voltage on RED cable lead with respect to BLACK cable lead
RECEIVERS
Type
Dynamic
Frequency Response
100 to 8,000 Hz

Output Level (at each ear)
104.0 dB SPL with 1.4V at 1 kHz (1.0 mW into 6 cc cavity)
Polarity
Positive voltage on WHITE and/or YELLOW cable leads produces positive pressure at receiver
Quick Links
FAQ's for SM2