½" Random-incidence microphone Type 40AQ - Prepolarised



The Type 40AQ is a special ½" prepolarised microphone with a frequency response that is optimised to measure sound pressure levels correctly in random, diffuse or reverberant sound fields. This microphone fulfills the requirements in ANSI standard S1.4.

This microphone is similar to the Type 40AR but, as an electret condenser microphone, it does not require an external polarisation voltage and can be used with G.R.A.S. CCP preamplifiers (ICP®) such as the Type 26CA.

® ICP is a registered trade mark of PCB Piezotronics.

Download PDF Data Sheet: pd_40AQ_ver_10_12_03.PDF
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Specifications Type 40AQ
Sensitivity

50 mV/Pa

Frequency range

3.15 Hz - 12.5 kHz

Dynamic range

17 dB - 146 dB re. 20µPa

Polarisation voltage

0 V

Outside diameter (with protection grid)

13.2 mm

Length (with and

16.2 mm

without protection grid)

15.3 mm

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½" CCP Preamplifier - Type 26CA
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Constant voltage
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Power Module - Type 12AD
Power Module - Type 12AG
Power Module - Type 12AK
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Power Module - Type 12AA
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¼" Pressure microphone Type 40BP - High level
¼" Pressure microphone Type 40BH - Very high level
½" Pressure microphone Type 40AD - Prepolarised
½" Pressure microphone Type 40AG - High frequency
½" Pressure microphone Type 40AP - High sensitivity
½" Pressure microphone Type 40AO - Prepolarised, Wide frequency
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CCP Probe microphone Type 40SC
Probe microphone Type 40SA
½" Random-incidence microphone - Type 40AR
½" Random-incidence microphone Type 40AQ - Prepolarised
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¼" Intensity-microphone pair Type 40BI
½" Sound-intensity microphone pairs Type 40AI/40AK
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Hydrophone Type 10CT
Hydrophone Type 10CC
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Hydrophone Type 10CH
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Voltage preamplifier Type 12CA
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½" Pressure microphone Type 40AU - Laboratory standard
½" Low-noise Level Microphone System - Type 40HH
1" Pressure microphone Type 40EU - Laboratory standard
Technical notes
TEDS - plug and play
¼" TEDS microphones