Type 40AU


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.
Specifications Type 40AU (LS2aP)
Specifications Type 40AU (LS2aP)
Sensitivity:
12.5 mV/Pa
Dynamic range:
27 - 160 dB re. 20µPa
Frequency range:
3.15 Hz - 20 kHz
Polarisation voltage:
200 V
Outside diameter (front:
13.2 mm
and back):
12.7 mm
Length: (with and
12.5 mm
without protection grid):
11.6 mm
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