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.

Microphone Cartridges

Omnidirectional Electret

Condenser Microphone Cartridge

Series:

WM-034C/034D

I Features

I Sensitivity

I Specifications

Sensitivity

See next page (0dB = 1V/pA, 1kHz)

Impedance

Less than 2.2k

Ω [1.5k Ω]

Directivity

Omnidirectional

Frequency

20–16,000 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

6.7

2.0

Term 2

ground

Term 1

output

6.7

4.5

2.0

+20

+10

0

–10

–20

–30

20

50

100

200

500

1000

2000

5000

10000 20000

Frequency (Hz)

X

Y

Z

–46

±3dB

–42

±3dB

–38

±3dB

Vs = 4.5V

RL = 2.2k

Ω

WM-034B/034C

M

H

P

R

U

–44

±2dB

–42

±2dB

–40

±2dB

–38

±2dB

–36

±2dB

Vs = 1.5V

RL = 1.5k

Ω

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)