Pressure microphone type 40AU

The Type 40AU is a laboratory-standard microphone which can be used, for example, in couplers, ear simulators, enclosures and at boundaries. It is an externally polarised pressure microphone with a large dynamic range and an extended frequency response. This microphone is capable of measuring sound pressure levels up to 160 dB re. 20µPa.

  • Sensitivity  12.5 mV/Pa
  • Dynamic range  27 – 160 dB re. 20 µPa
  • Frequency range  3.15 Hz – 20 kHz
  • Polarisation voltage  200 V
  • Outside diameter  13.2 mm
  • Length  11.6 mm