You
can use the volume buttons to adjust the volume of the projector's
internal speaker or any external speakers or headphones connected
to the projector.
Note: You
must adjust the volume separately for each connected input
source.
Turn on the projector and start a video that
includes audio.
To raise or lower the volume, press the
volume up or volume down button on
the projector remote control. A volume gauge appears on the
screen.