Microflex Series Compact Boundary Microphone with On/Off Switch (Cardioid)

The MX393 Microflex�Wired Boundary Microphone from Shure is equipped with a programmable, silent membrane switch and green LED indicator. It is a high-quality solution for a range of applications such as altars, boardrooms and distance learning centers. Includes miniature three pin connector and 12' XLR cable.<br/><br/>All measurements taken with microphone mounted on a wooden surface 76.2 cm x 76.2 cm (30 in. x 30 in.).<br/><br/>Frequency Response<br/>50 to 17,000 Hz<br/><br/>Polar Pattern<br/>Cardioid<br/><br/>Output Impedance<br/>EIA Rated at 150 ohms (180 ohms actual)<br/><br/>Sensitivity (at 1 kHz, open circuit voltage)<br/>Cardioid Cartridge: -27.5 dBV/Pa (42.2 mV)<br/>1 Pascal=94 dB SPL<br/><br/>Maximum Sound Pressure Level (1 kHz at 1% Total Harmonic Distortion, 1 k ohm load)<br/>Cardioid: 117.0 dB<br/><br/>Signal to Noise Ratio (referenced at 94 dB SPL)<br/>Cardioid: 71.0 dB<br/><br/>Equivalent Output Noise (A-weighted)<br/>Cardioid: 23.0 dB SPL<br/><br/>Dynamic Range<br/>94.0 dB<br/><br/>Common Mode Rejection<br/>45 dB minimum, 10 Hz to 100 kHz<br/><br/>Switch Attenuation<br/>50 dB minimum<br/><br/>Preamplifier Output Clipping Level<br/>-6 dBV (0.5 V)<br/><br/>Polarity<br/>Positive sound pressure on diaphragm produces positive voltage on pin 2 relative to pin 3 of output connector.<br/><br/>Power Requirements<br/>11 to 52 Vdc phantom<br/>2.0 mA current consumption<br/><br/>Environmental Requirements<br/>Operating Temperature Range: -18 to 57 degrees C (0 to 135 degrees F)<br/>Relative Humidity: 0 to 95%<br/>