You
can use the Volume buttons on the
remote control to adjust the volume as you project a presentation
with audio. The volume buttons control the
projector’s internal speaker system or any external speakers you
connected to the projector.
You must adjust the volume separately for each
connected input source.
Warning: Do
not start playback at a high volume. Sudden loud noises may cause
hearing loss. Always lower the volume before turning off the
projector. Gradually increase the volume after turning the
projector on.