TYPE 4971-H-041

½-INCH CCLD PRESSURE-FIELD MICROPHONE

Designed for measuring close to hard reflective surfaces, close to sound ports of audio devices or in flush mountings. Also suitable for random-incidence measurements and free-field measurements with 90°C incidence.

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Type 4971-H-041 is optimized for coupler measurements. It can also be used for random-incidence measurements and free-field measurements with 90° incidence.

It is designed to be accurate, reliable and robust. Its wide frequency range (5 Hz to 20 kHz, ±2 dB), wide dynamic range (20 dB(A) to 146 dB) and immunity to changing environmental conditions make it the go-to microphone for pressure-field measurements. 

USE SCENARIOS

  • Measurements very close to sound ports of an audio device (near field)
  • Measurements in acoustic chambers and test boxes where reflections occur
  • Flush mounting
  • Inside an acoustic coupler (pressure field)
  • Acoustic measurements requiring a robust and reliable ½-inch pressure-field microphone operating at temperatures up to 125°C (257°F)
  • Free-field measurements with 90° incidence

THIS MICROPHONE IS A FACTORY-ASSEMBLED COMBINATION OF:

The microphone cartridge and preamplifier are sealed together and are considered as one unit with a single type and serial number stored in the TEDS chip.

Capacitance
pF
Diameter
1/2
Dynamic range
20 – 146 dB
Frequency range
20 – 20000 Hz
Inherent noise
20 dB A
Lower limiting frequency -3dB
1-3 Hz
Optimised
Pressure Field
Polarization
Prepolarized
Polarization voltages
0 V
Pressure coefficient
-0.0023 dB/kPa
Sensitivity
12.5 mV/Pa
Standards
IEC 61094-4 WS2P
Temperature coefficient
0.003 db/ºC
Temperature range
-20 – 125 C
Venting
Rear
Weight
gram
Sound field
Pressure-field
Input type
Classic
Microphone type
Pressure Field