The lightweight miniature lavalier microphone shall be able to be clipped to a shirt or jacket, and shall have a hyper cardioid electret condenser microphone element, for highly focused pickup and rejection of off-axis sound. The microphone shall be designed for best performance when it is attached at the chest. The microphone capsule shall rotate 360°, to enable the best possible pickup angle when worn on a lapel. Frequency response shall be 100 Hz to 15 kHz. Rated impedance shall be 120 ohm, balanced, and rated sensitivity shall be –47 dB (1 kHz 0 dB=1 V/Pa). The microphone shall be powered by any phantom power source supplying 9 – 52 volts. The output connector shall be a balanced-phone plug, and cable length shall be 5.0 m (16.4 ft.). Operating temperature shall be 0° C to +40° C (32° F to 104° F). Body finish shall be copper alloy, with black semi-gloss paint. Dimensions shall be ø8.9 x 28.6 mm (ø0.35" x 1.13") (cord excluded), and weight shall be 100 g (0.22 lbs.). A windscreen and a clip holder shall be provided as accessories. With clear and accurate voice reproduction, the microphone shall be suited for such applications as lectures and religious services.
The lavalier microphone shall be TOA model EM-410.