Type 40AO

Type 40AO
The Type 40AO is a ½" high precision microphone for laboratory work. It covers a frequency range from 3.15 Hz to 20 kHz. Its small size and lower sensitivity make it extremely robust and stable and is capable of measuring sound pressure levels up to 160 dB re. 20µPa.
This microphone is similar to the Type 40AG but, as a prepolarised condenser microphone, it does not require an external polarisation voltage and can be used with G.R.A.S. CCP* preamplifiers such as the Type 26CA.
Specifications Type 40AO (WS2P)
Specifications Type 40AO (WS2P)
12.5 mV/Pa
Dynamic range:
27 - 160 dB re. 20µPa
Frequency range:
3.15 Hz - 20 kHz
Polarisation voltage:
0 V
Outside diameter (with protection grid):
13.2 mm
Length: (with and
12.5 mm
without protection grid):
11.6 mm
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