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FAMILY 4955

1/2" LOW-NOISE MICROPHONE, FREE FIELD

This Low Noise Microphone is designed for sound power measurements and free-field measurements in strong magnetic fields, over a frequency range of 5 Hz to 20 kHz.

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FAMILY 4955

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Low Noise Microphone Type 4955 consists of a high sensitivity ½" cartridge, which has been optimised for the lowest inherent noise.

Type 4955 TEDS microphone has a noise floor typically less than 5.5 dB (A), hence allowing measurements well below 10 dB(A).

  • Sound power measurements
  • Low-level measurements
  • In-cabin measurements
  • Measurements in strong magnetic fields
  • Homeland security applications

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FAMILY 4955
Sound field Free field
Polarization Classical
Sensitivity 1100 mV/Pa
Lower frequency 10 Hz
Higher frequency 16 kHz, 16 Hz
Lower dynamic range 6.5 dB, 19 dB
Higher dynamic range 110 dB, 136 dB
Diameter 1/2 inch
Venting Front
Minimum Temperature -20 °C
Maximum Temperature 100 °C
Minimum Temperature -4 °F
Maximum Temperature 212 °F
Output signal (connectivity) Passive