The Crown CM-30 is a professional-quality,supercardioid condenser microphone designed for inconspicuous miking of a choir, orchestra or stage. The mic cableconnects to the electronics/faceplate which fits a standard electrical outlet box. The CM-30also can hang over conference tables or discussion groups for inconspicuous isolated miking.
Because of its supercardioid pickup pattern, the CM-30 rejects background noise and room reverberation, and improves gain-before-feedback, more than a microphone with a cardioid pattern.
The CM-30 has a smooth, wide-range frequency response for natural reproduction of the singing voice, organ or other musical instruments. Extreme low frequencies are filtered out to reduce pickup of room rumble. The microphone output is balanced, low impedance. It is protected against static and radio frequency interference. A built-in removeable hanger allows easy position adjustment by bending the lower portion of the hanger. The CM-30 requires 12-48V phantom power. The CM-30 is black; the CM-30W is white.
The CM-30 consists of the microphone with 30' cable and associated electronics. The electronics PC board is mounted to the provided rectangular electrical plate as shown in Fig. 4.
The mating electrical backbox should be installed at the mounting location. Input and output screw terminals eliminate the need for cable connectors. The provided strain relief acts as a cable clamp when securely tightened.
A recommended microphone placement for sound reinforcement is shown in Figs. 5a and 5b. For recording or broadcast, you might want to place the microphone a few feet farther away to pick up more room acoustics. Bend the wire hanger to achieve the desired pickup angle.
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