08. G.R.A.S. 146AE 1/2" CCP Free-Field Rugged Microphone Set

GRAS 146AE is  The rugged automotive microphone from GRAS. 

Provides accurate data under even the most challenging test conditions.

Resists shock, vibration, drop, water, dust and extreme temperatures

More Detail: 146AE Brochure


More details

The rugged design of the 146AE makes it possible to perform many different types of measurement in the same automotive test set up using only a single type of microphone. Not only does this improve your NVH test performance and data quality in rugged conditions, it also extends the lifetime of your measurement set-up.

There is no need to repeat costly and time-consuming testing, providing you with efficient, valid data and high performance all at the same time.


IEC 61094-4/WS2F
Freq range: 3.15 Hz to 20 kHz
Dyn range: 18 dB(A) to 138 dB
Sensitivity: 50 mV/Pa
Temperature: -40 to +125°C
Humidity: 0 – 95%


A new Paradigm for Automotive Testing

With the accuracy of an IEC 61094-4/WS2F measurement microphone and ruggedness combined in one microphone you can now use a state of the art microphone that provides the advantage of quality and stability over an extended period of time, even when subjected to rough conditions.


This microphone is specifically designed to resist vibrations, shock and drop, and to produce accurate and repeatable measurements under harsh conditions. Application specific test fixtures, cables and accessories ensure easy positioning and handling.


An integrated PowerOn LED indication shows when the microphone is connected and ready to measure. If there is a faulty connection the LED will not be lit during power up. Finally it will light up when the TEDS chip is read. This feature makes it possible to run a full "are we ready to measure?" test of all connected microphones by sequentially activating their TEDS.


Typical Applications and Use

The 146AE is a free-field microphone set designed for use in rough conditions such as NVH testing in the automotive industry.


It is specifically designed for applications such as:

      -Engine noise vibration testing

      -Acoustic performance testing

      -Pass by noise testing

      -Power train induced noise

      -Computer Model Validation/CAE validation

      -Accelerated Life Cycle Testing

      -Interior noise (Roof, AirCon, Squeak and Rattle)

      -Entertainment and Communication, Voice control

      -Vehicle component evaluations and certifications (Brake, Tire, Exhaust)

      -Testing at temperatures up to 125°C



With the new rugged automotive microphone, we have elaborated our HALT test to reflect the harsh environments and conditions in NVH measurements.


NVH measurement conditions

Strong vibrations, shock, drop, extreme temperatures and wet or dusty conditions are all par for the course for a automotive microphone. And at the end of the day you need to be confident that you have valid data, reliable repeatability and minimal downtime or re-tests.


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