GRAS RA0038 1/2'' 2cc Coupler according to IEC 60318-5
Volume: 2 cc
Special feature: For 1/2" pressure microphones
The RA0038 is for use in the acoustical measurements of insert type hearing aids and earphones.
It complies with the requirements of
- IEC 60318-5 (60126) 2 cm3 coupler for the measurement of hearing aids and earphones coupled to the ear by ear inserts and
- ANSI S3.7-1995 American National Standard for Coupler Calibration of Earphones.
To avoid possibly damaging the microphone, the RA0038 can be used with a microphone fitted with its protection grid, e.g. a GRAS 40AG and a suitable preamplifier, like GRAS 26AS which is a 1/4" very short preamplifier with 3 m integrated cable.
The RA0038 is also part of the GRAS 43AB Artificial Ear.
GRAS Sound & Vibration reserves the right to change specifications and accessories without notice.