ETMC Technologies :: G.R.A.S. Sound & Vibration :: Type 40AP - a general purpose microphone, covering a frequency range from 3.15 Hz to 10 kHz. Because of its high sensitivity, it can measure sound pressure levels down to 17 dB re. 20µPa.

<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/00012/00013/00029/00119/">no-frames</A>.</p> <p>The Type 40AP is a general purpose microphone, covering a frequency range from 3.15 Hz to 10 kHz. Because of its high sensitivity, it can measure sound pressure levels down to 17 dB re. 20µPa. <p>Specifications Type 40AP (WS2P) <p>Sensitivity: 50 mV/Pa <p>Dynamic range: 17 - 146 dB re. 20µPa <p>Frequency range: 3.15 Hz - 10 kHz <p>Polarisation voltage: 200 V <p>Outside diameter (with protection grid): 13.2 mm <p>Length: (with and 16.2 mm <p>without protection grid): 15.3 mm