No Sound from Classroom Instructor's Microphone

Classroom microphones may be used for in-room reinforcement, lecture capture or videoconferencing; however, some microphones may serve only one of these functions. Call 4-TECH at 410-704-8324 or use the CCLT chat service to verify the microphone capabilities for specific rooms.

Solution

1. Verify audiovisual system power.
2. On the Crestron control system's Microphones menu, set the desired microphone to Use.
3. Verify microphone power, if possible. Where visible, colored status lights indicate the microphone power state (red: off; green: on).
   1. Wireless microphones have power switches on the bodypack transmitter.
   2. Some podium microphones have a small power button on the base.
   3. Some ceiling microphones have colored status lights.
4. Crestron control systems include a No Sound feature; when selected, this will be indicated on the control panel. Press the No Sound button to deselect; the indicator will disappear, and the microphone should become audible.
5. Wireless microphones require batteries and should feature a battery life meter. Dead batteries should be replaced, if possible.
6. If the above steps fail to resolve the issue, report it by calling 4-TECH at 410-704-8324 or using the CCLT chat service. Leave a note on the lectern to inform other instructors of the problem.

Workaround

1. For lecture capture or videoconferencing, sign in to the session with a laptop or mobile device to use its built-in microphone.
2. Planar monitors, Dell all-in-one PCs and iMacs all have built-in microphones that may be used for lecture capture or videoconferencing. Select these from the software's video settings menu.