ETMC Technologies :: G.R.A.S. Sound & Vibration :: Type 67AX - a CCP Ground Array Microphone Kit that consists of a ½" IEC 61094 precision, prepolarized pressure microphone, an integrated CCP1 preamplifier with built-in TEDS2, and a 400 mm diameter mounting plate.

<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/00012/00013/00334/00478/">no-frames</A>.</p> <p>The 67AX is a CCP Ground Array Microphone Kit that consists of a ½" IEC 61094 precision, prepolarized pressure microphone, an integrated CCP(1) preamplifier with built-in TEDS(2), and a 400 mm diameter mounting plate. <p>The microphone sits asymmetrically in the mounting plate to attain a more uniform frequency response for measurements. Typical applications for the 67AX include ground array measurements and general noise measurements. The 67AX is ideal for the aerospace industry. <p>(1) Constant Current Power <p>(2) Transducer Electronic Data Sheet according to IEEE-1451.4. <p>Related Products: Type 47AX <p>Specifications Type 67AX <p>Nominal sensitivity: 12.5 mV/Pa at 250 Hz <p>Dynamic range (upper limit): 146 dB re. 20μPa (3% distortion) <p>Dynamic range (lower limit): 22 dB(A) re. 20μPa (thermal noise) <p>Frequency response: 5 Hz - 12.5 kHz (±1 dB) 3.15 Hz - 20 kHz (±2 dB) <p>Output connector: Coaxial Microdot <p>Temperature Range: -30 °C to +70 °C <p>Output cable: Integrated with coaxial Microdot connector, plus an adapter for BNC cable Cable length: 1.5 m <p>Thickness: 9.20 mm (with grid) 8 mm (without grid) <p>Diameter: 13.5 mm (microphone) 18.2 mm (preamplifier) 400 mm (mounting plate) <p>Weight: 15 g (microphone only)