GRAS RA4800 Adapter for Sensitivity Verification of Flush/Surface Microphones

For in-situ verification of surface-mount and flush-mount microphones

GRAS RA4800 Adapter for Sensitivity Verification of Flush/Surface Microphones

Technology

RA4800 is a field verification adapter for UTP, surface-mount, and flush-mount microphones.
With this adapter, it is possible to perform quick and reliable verification without having to demount the microphone.

The diameter of the adapter is wide enough to accommodate all GRAS fairings for UTP and surface-mount microphones.

RA4800

 

The adapter fits sound calibrators and pistonphones fitted with 1" collar.

A soft cushion similar to those found on circumaural headphones provides a closed cavity, four distance spacers (legs) make it easy to hold the calibrator stable during the verification. Also, they ensure that the volume stays the same during the verification and that the same volume can be achieved in future tests.

It is designed for verification at 250 Hz. The accuracy is within ± 0.2 dB.

 

Dimensions

All dimensions in mm

RA4800 dimensions

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