NBS 9-A coupler RA0075

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The RA0075 is a Coupler for testing earphones according to ANSI S 3.7 – 1995.

It uses a 1" pressure condenser microphone with a preamplifier, e.g. the 1" Microphone Type 40EN and a ½" Preamplifier Type 26AK with a ½" to 1" Microphone Adapter RA0073.

The RA0075 is also part of the G.R.A.S. Artificial Ear Type 43AF.

Download PDF Data Sheet: pd_RA0075_ver_29_06_07.PDF.

Related Products:

RA0038

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Specifications Type RA0075
Standards:	ANSI S3.7-1975, Coupler calibration of earphones
Accessories available:	1" Microphone Type 40EN ½" Preamplifier Type 26AK ½" to 1" Microphone Adapter RA0073

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Updated 2. july 2007

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