Planar UR7551-MX User Manual page 49

Balance
Enable Internal
Speakers
Mute
Set the audio balance
Range: 0~100; Default: 50
Disable or enable the built-in speakers
Options: On, Off; Default: On
Mute or unmute the audio
Options: On or Off; Default: Off
Planar UltraRes Series User Manual
Audio Menu
43