1. Select the PDM MIC input on the control panel
The microphone is usually located on top of the cabinet or podium. It is controlled with buttons on the control system panel.
Press the PDM MIC button on the control panel.
2. Adjust the sound, if needed
Press the "VOLUME UP" button to increases the sound.
Press the "VOLUME DOWN" button to decrease the sound.
Press the "MUTE" button to cut the sound. Press it a second time to restore the sound.