CTG Audio CM-02 Electret Condenser Ceiling Microphone

The CTG Audio CM-02 Electret Condenser Ceiling Microphone is a top - notch choice for voice reinforcement and teleconferencing. It uses a special pressure - sensitive, tensionless low - mass element with an integrated FET low - noise amplifier. This gives it an ultra - smooth frequency response and excellent feedback stability. With high temperature stability, it offers great system performance in fixed - gain situations. In an average acoustical environment, it has a pickup range of 10 - 12 radius. Key features include suitability for group teleconferencing in boardrooms, classrooms, and focus groups. It's perfect for rooms with perimeter seating, allows furniture rearrangement without affecting the audio system, and provides even pick - up for many participants with few microphones. It creates a clean environment with no visible cables, is almost invisible when flush - mounted in the ceiling, minimizes table noise, and lets participants move freely. Technical specs: Element - Electret Condenser; Frequency Range - 10 - 20,000 Hz; Phantom Voltage - 2 - 50 Volts DC; Acoustical Mode - Boundary Effect Pressure Transducer; Temperature Stability - +/- 0.02 dB per degree F max; Operating Current - 50 µA max; Impedance - 200 Ohms nominal, balanced; Output Level ref 1mW/10dynes/cm2 - - 57 dBm (- 51 dBm when mounted); Equivalent Noise level A weighted - 28 dB SPL (- 22 dB SPL when mounted); Equivalent Vibration Sensitivity - 70db (1 KHz SPL equivalent of 1G); Recommended Room Conditions - Reverberation Time < 0.6 seconds, Noise Level < 48dBa.

Using the CTG Audio CM - 02 ceiling microphone is easy. First, mount it flush in the ceiling as it's designed to be almost invisible. Connect it to your audio system and make sure to supply the correct phantom voltage between 2 - 50 Volts DC. For the best audio quality, place it in a room with a reverberation time of less than 0.6 seconds and a noise level below 48dBa. When using it for teleconferencing or voice reinforcement, participants can sit around the perimeter of the room and still be heard clearly. They can even move around or turn their backs to the table. Note that the microphone is sensitive, so avoid sudden movements near it that could cause vibration noise. To maintain it, keep the area around the microphone clean and free from dust. You can gently wipe it with a soft, dry cloth. If you need to move furniture in the room, there's no need to worry about the audio quality as the microphone can handle rearrangement well.