1.) Power on the AV rack by using the button on the top right. Be sure to turn this switch off when finished. Here are three examples of the type of button you may see:
2.) There is a handheld and a headset available in the drawer in the AV rack. They power on by switching the notated buttons. Switch them back off when you are done to power them down.
3.) Use the knobs to adjust appropriate source of audio. There are labels for each knob specific to the room. Make sure the master is set at the level labeled ‘0’. Be sure to power on the desired microphone via the microphone.