Catalog

The GRAS RA0003 is a straight adapter, for placing between a 1/2" microphone and a 1/4" preamplifier...

The RA0006 is a right-angled adapter for using a 1/4" microphone with a 1/4" preamplifier. It can be used with any standard 1/4" microphone and 1/4" preamplifier such as the GRAS 26AC. The RA0006 could be useful in situations where the microphone has to be flush mounted on a..

Straight adapter, length 7.5 mm, for placing between a 1/4" microphone and a 1/4" preamplifier. This item is an extender (not adapting anything)...

The RA0009 is an adapter for calibrating the Outdoor Microphone System Type 41AM. It fits over the rain protection cap of the GRAS 41AM and permits in-situ calibration using a Pistonphone such as the GRAS 42AA or a Calibrator such as the GRAS 42AB. ..

The GRAS RA0014 1/2'' Electrostatic Actuator is an electrostatic actuator for testing the frequency response of standard 1/2”, 1/4” and 1/8" microphones; adapters are included for testing 1/4” and 1/8"microphones. The GRAS RA0014 can be connected directly to the GRAS 14AA Actuato..

The GRAS RA0014-S1 1/2'' Electrostatic Actuator is for testing the frequency response of the microphone 40AU-1. The GRAS RA0014-S1 can be connected directly to the GRAS 14AA Actuator Supply ...

The GRAS RA0015 is an electrostatic actuator for testing the frequency response of standard 1” microphones. The RA0015 can be connected directly to the GRAS 14AA Actuator Supply...

Recommendation: Choose a microphone with low sensitivity instead of using the RA0016. The RA0016 is a 20 dB attenuator for inserting between a 1/2" microphone and preamplifier. It will attenuate the output signal of the microphone by 20 dB in order to avoid overloading the preamplifier. The ..

The RA0017 is a simple adapter for using a 1" microphone with a 1/2" preamplifier. It can be used with any standard 1" microphone and 1/2" preamplifier such as the GRAS 26AK...

Recommendation: Choose a microphone with low sensitivity instead of using the RA0018. RA0018 is a 20 dB attenuator for inserting between a 1/2" prepolarized microphone and preamplifier. It will attenuate the output signal of the microphone by 20 dB in order to avoid overloading of the preampli..

The RA0019 is an adapter for using a 1/4" microphone with a 1/2" preamplifier. Its influence on the acoustic field is minimal. To reduce attenuation of the microphone signal, the guard ring of the preamplifier is extended through the RA0019. ..

The RA0020 is specially designed and optimized for use with 1/2" microphones for sound pressure measurements, when high speed wind comes from one known direction e.g. in a wind tunnel...