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ECM-959/959V
SERVICE MANUAL
E Model
UK Model
AEP Model
ECM-959/959V
US Model
Canadian Model
ECM-959
(ECM-959)
SPECIFICATION
General
Frequency Response
Type
One-point stereo (employing the Mid-Side system), electret
condenser microphone (with back-electret condenser capsules)
Output plug
(ECM-959)
-+e---+ Stereo miniplug
Front
(ECM-959V)
«+
Phone plug X 2
:
.
Cord length
(ECM-959) +--+: Approx. 2m(6feet 7inches)
eens
i, ae Raxis
(ECM-959V)_
«+
Approx.
40cm(15% inches)
Battery
R6 (size AA) battery
Dimensions
30 X175mm(outside diameter x length) (13% x 7inches)
5 A
Weight
(ECM-959)
+
Approx. 2069(7.3 0z) incl. battery
ea
a
i
(ECM-959V)
+--+ Approx. 250g (8.8 oz) incl. battery
R (180°)
=
L (180°)
Supplied accessories
Case (1)
(ECM-959)
«+--+
Microphone stand/grip (1)
Plug adaptors (unimatch plug) (1 set)
Microphone stand screw adaptor SAD-35 (1), SDA-34 (1)
(ECM-959V)
«s+
Microphone mounting adaptor (1)
Performance
Frequency response
50 - 18,000 Hz
Directivity
Directive angle: 90° or 120°
Output impedance
§50 2+ 20% unbalanced
Output tevel
Open circuit voltage: -48+3 dB (0 dB = 1 V/Pa)
(at 1,000 Hz, directive
Effective output level: -51.4+3 dBm (0 dBm
= 1mW/Pa)
angle 120°)
Difference between L and R output level: Less than 3 dB
Power requirements
Noise level
Wind screen (1)
Microphone holder (with PF'4 screw) (1)
Sony battery SUM-3 (NS) (1)
Recommended
load impedance: More than 3 kilohms
Normal operating voltage: 1.5 V
Minimum operating voltage: Approx. 1.1 V
Battery life: Approx. 2,500 hours with Sony battery SUM-3 (NS)
Signal-to-noise ratio: More than 69 dB (1.000 Hz, 1 Pa)
Inherent noise: Less than 25 dB SPL (0 dB SPL =2x 10°5 Pa =
2x 10-4 ubar)
Wind noise +': Less than 45dB SPL, using
wind screen
Induction noise from external magnetic field *' Less than 10dB
SPL (ECM-959)/Less then —4dB SPL (ECM-959V)
Maximum sound pressure level
More than 117 dB SPL (at 1.000 Hz. 1% distortion)
Dynamic range
More than 92 dB
Operating temperature range
0°C to 60°C (32°F to 140°F)
Storage temperature range
~20°C to 60°C (~4°F to 140°F)
*' Wind noise is the value measured by applying a wind velocity of 2 misec. (6.6 ft/sec.) from all directions to the
microphone. The mean value is taken and converted to the equivalent input sound level.
*' The external magnetic field induction noise is measured with the microphone placed in an alternating magnetic
field of 50 Hz. 1
10°" tesla (1 milligauss). The maximum noise value is taken and converted to the equivalent
input sound level.
Response
in dB
|
a
t
20
«50
100 200 500 1k
2k
5k
10k 20k
Frequency in Hz
Directivity Characteristics
L-channel directional axis
R-channel directional axis
ELECTRET CONDENSER
STEREO MICROPHONE
SONY.
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