Features, Precautions, Specifications – Sony ECM MS908C User Manual

Page 2: General, Performance

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Before operating the unit, please read this manual thoroughly and retain it
for future reference.

Features

This microphone is a stereo microphone, attached externally to a video
camera, that can capture sound with high quality. It works with any video
camera that supports a microphone input terminal and an accessory shoe.

• The MS (Mid-Side) Stereo System enables a natural sound pick up,

delivering a stereo sound image with superb clarity.

• The directive angle (between left and right charmels) can be set to 90° or

120° according to the sound source.

•• A custom extension arm allows you to use the microphone apart from the

video camera, thereby cutting mechanical noise interference during
sound pickup.

Precautions

• The microphone should never be dropped or subjected to extreme shock.
• Keep the microphone away from extremely high temperatures and

humidity (above 40°C or 104°F).

• If the microphone is placed near loudspeakers, a howling effect (acoustic

feedback) may occur. If this happens, place the microphone as far as

possible from the loudspeakers, change the direction of the microphone
or decrease the speaker volume until the howling stops.

Specifications

General
Type

Microphone cord

Dimensions

Mass

One-point stereo (employing the Mid-side stereo system),
electret condenser microphone
2.2 mm dia. two core-shielded, OFC (Oxygen-free copper)
cord with the gold-plated L-shaped stereo miniplug
Length: Approx. 30 cm (11 inches)
29 X 127 mm (Outside diameter x length) (1 3/i6 x 5 inches)
not incl. projecting parts and controls
Approx. 110 g (4 oz) including battery

Supplied accessories Wind screen (1)

Extension arm (1)
Shoe adaptor (1)
Carrying case (1)

Performance
Frequency response 1(X) - 15,000 Hz
Directivity

Unidirectional x 2 (Directive angle: 90° or 120°)
(switchable)

Output impedance 1 kilohm ±20% unbalanced
Sensitivity (directive angle 120°)

Open circuit output level**; -45 ±4 dB
Effective output level*^-. -51 ±4 dBm
Difference between L and R channel sensitivity: Less than

3dB

Power requirements Normal operating voltage: 1.5 V, R6 (size AA) battery

Battery life: Approx. 200 hours with a Sony R6P (SR)
battery

Maximum sound pressure level*3

More than 110 dBspi.

Dynamic range More than 85 dB
Operating temperature range

0°C to 40°C (32°F tol04°F)

*1 0 dB = 1 v/Pa, 1,000 Hz (1 Pa = 10 nbar = 94 dBst-L)
*2 0 dBm = 1 mW/Pa, 1,000 Hz
*3 1 % wave distortion is present at 1,000 Hz.

(0 dBsi’i. = 2 X 10 '^ Pa)

Design and specifications are subject to change without notice.

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