ETMC Technologies :: G.R.A.S. Sound & Vibration :: RA0075 - 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 1/2" Preamplifier Type 26AK with a 1/2" to 1" Microphone Adapter RA0073. The RA0075 is also part of the G.R.A.S. Artificial Ear Type 43AF.

<H1>No Frames? No Problem!</H1> <p><br>Go to G.R.A.S. Sound & Vibration web site with <A HREF="http://www.gras.dk/00012/00058/00165/00171/">no-frames</A>.</p> <p>The RA0075 is a Coupler for testing earphones according to ANSI S 3.7 – 1995. <p>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. <p>The RA0075 is also part of the G.R.A.S. Artificial Ear Type 43AF. <p>Specifications Type RA0075 <p>Standards: ANSI S3.7-1975, Coupler calibration of earphones <p>Accessories available: 1" Microphone Type 40EN 1/2" Preamplifier Type 26AK 1/2" to 1" Microphone Adapter RA0073