Microphone Cartridges
Omnidirectional Electret
Condenser Microphone Cartridge
Series:
WM-034B/034DB
(pin type)
WM-034C/034D
G
Low operation voltage of 1.0V to 10V (2M-034D type)
G
Microphone with pins for PCB (WM-034B/034DB type)
I
Features
G
Useful for almost any type telephone and other
applications
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Sensitivity
WM-034B/034C
Vs = 4.5V
RL = 2.2kΩ
X
Y
Z
–46±3dB
–42±3dB
–38±3dB
WM-034DB/034D
Vs = 1.5V
RL = 1.5kΩ
M
H
P
R
U
–44±2dB
–42±2dB
–40±2dB
–38±2dB
–36±2dB
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Specifications
Sensitivity
Impedance
Directivity
Frequency
Max. operation voltage
Standard operation voltage
Current consumption
Sensitivity reduction
See next page (0dB = 1V/pA, 1kHz)
Less than 2.2k
Ω
[1.5k
Ω]
Omnidirectional
20–16,000 Hz
10V
4.5V [1.5V]
Max. 0.8mA [0.3mA]
Within –3dB at 3V
[(M.H.): Within –3dB at 1V]
[(P.R.U.): Within –2dB at 1V]
More than 60dB
S/N ratio
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Typical Frequency Response Curve
+20
Relative Response (dB)
+10
0
–10
–20
–30
20
50
100
200
500
1000
Frequency (Hz)
2000
5000
10000 20000
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Dimensions in mm
(not to scale)
WM-034B/034DB
6.7
4.5
2.0
Term 1
output
ø9.7
2.54
ø9.7
WM-34C/034D
6.7
2.0
Term 1
output
Term 2
ground
Term 2
ground
Design and specifications are subject to change without notice. Ask factory for technical specifications before purchase and/or use.
Whenever a doubt about safety arises from this product, please contact us immediately for technical consultation.
