Sony ECM MS957 operating instructions P e r f o r m a n c e Frequency Response

P e r f o r m a n c e

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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