G.R.A.S. Sound & Vibration A/S

We Make Microphones

Standards. Specials. Customized

Since 1994 we have been 100% dedicated to developing and manufacturing high-quality measurement microphones and related acoustic equipment that is distributed by a worldwide partner network. From our heritage derives the program of standards, specials and customized solutions.

• Standards. Our base program of measurement microphones and related acoustic equipment suited for most needs.
• Specials. Slight modifications to the base program solutions fulfill the more advanced needs.
• Customized. Solutions built to match particular needs that cannot be completed by G.R.A.S. Standards or Specials.

The new High-frequency coupler is released

Three kits are available:

Visit www.kemar.us

Sound Power Hemispheres

The G.R.A.S. Hemisphere meets the requirements for a stable, simple-to-position soundpower setup. The Hemisphere is portable and provides tool-less assembly and accessibility to the DUT.

The Hemisphere complies with the standard ISO 3744, 3745 and 3746 and accommodates for 4, 10 and 20 positions – clearly marked to ease the mounting and to maintain measurement repeatability. The preconfigured kits include 4, 10 or 20 microphone sets in variants of C C P, LEMO and low-noise LEMO