EM-700
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Boundary Microphone
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The low-profile boundary microphone shall be designed to be placed on a flat surface for sound pick-up applications, and have an electret condenser microphone element with a cardioid polar pattern that rejects off-axis sound, for focused pickup. Frequency response shall be 35 Hz to 20 kHz. Rated impedance shall be 120 ohm, balanced, and rated sensitivity shall be –33 dB (1 kHz 0 dB=1 V/Pa). A low cut filter switch (100 Hz, -12 dB/oct) shall minimize ambient noise interference. The microphone shall be powered by any phantom power source supplying 9 – 52 volts.
The output connector shall be XLR-3-12 equivalent, and cable length shall be 7.5 m (24.61 ft.). Operating temperature shall be 0° C to +40° C (32° F to 104° F). Body finish shall be die-cast aluminum, and punched net surface-treated shall be steel plate, both with black matte-finish paint. Dimensions shall be 83 (W) x 23 (H) x 83(D) mm (3.27" x 0.91" x 3.27") (excluding cord), and weight shall be 290 g (0.64 lbs.). The microphone shall provide pure, natural sound quality, and be ideally suitable for installation on a lecture desk or meeting room table-top.
The boundary microphone shall be TOA model EM-700.