Sony ECM MS957 Microphone User Manual


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6
Performance
Frequency Response
50 -18,000 Hz
Directivity:
Unidirectional x 2 (Directive angle: 90° or 120°) (switchable)
Output Impedance:
600ohm + 30% unbalanced
Sensitivity (directive angle 120°)
Open circuit output voltage *1: -42 ± 3 dB
Effective output level *2: -45.8 ± 3 dBm
Difference between L and R channel sensitivity: Less than 3dB
Power Requirements:
Normal operating voltage:1.5 V, R6 (Size AA) battery
Minimum operating voltage: 1.1 V, R6 (Size AA) battery
Battery life: Approx. 2,000 hours with Sony R6P (SR) battery
Maximum Sound Pressure Level Input *3
More than 115 dBSPL
Dynamic Range
More than 90 dB
Operating Temperature Range
0°C - 40°C (32°F -104tF)
*1 0dB = 1 v/Pa, 1,000Hz (1 pa = 10 Ųbar = 94 dBsPL)
*2 0 dBm = 1 mW/Pa, 1,000Hz
*3 1% wave distortion at 1,000Hz. (0 dBsPI = 2 x 10-5 pa)
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