Design and specifi cations are subject to change without notice. Ask factory for technical specifi cations before purchase and/or use.
Whenever a doubt about safety arises from this product, please contact us immediately for technical consultation.
Microphone Cartridges
Omnidirectional Electret
Condenser Microphone Cartridge
Series:
WM-034B/034DB
(pin type)
WM-034C/034D
I Features
I Sensitivity
I Specifications
Sensitivity
See next page (0dB = 1V/pA, 1kHz)
Impedance
Less than 2.2k
[1.5k ]
Directivity Omnidirectional
Frequency 2016,000
Hz
Max. operation voltage
10V
Standard operation voltage
4.5V [1.5V]
Current consumption
Max. 0.8mA [0.3mA]
Sensitivity reduction
Within 3dB at 3V
[(M.H.): Within 3dB at 1V]
[(P.R.U.): Within 2dB at 1V]
S/N ratio
More than 60dB
I Typical Frequency Response Curve
I Dimensions in mm (not to scale)
WM-034B/034DB WM-34C/034D
Term 2
ground
Term 1
output
ø9.7
6.7
2.0
Term 2
ground
Term 1
output
ø9.7
2.54
6.7 4.5
2.0
+20
+10
0
10
20
30
20 50
100
200
500
1000
2000
5000
10000 20000
Frequency (Hz)
Relative Response (dB)
X
Y
Z
46
±3dB
42
±3dB
38
±3dB
Vs = 4.5V
RL = 2.2k
WM-034B/034C
M
H
P
R
U
44
±2dB
42
±2dB
40
±2dB
38
±2dB
36
±2dB
Vs = 1.5V
RL = 1.5k
WM-034DB/034D
G Useful for almost any type telephone and other
applications
G Low operation voltage of 1.0V to 10V (2M-034D type)
G Microphone with pins for PCB (WM-034B/034DB type)
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