Playing Sound Through The Projector - ViewSonic PX725HD User Manual

If the selected video image is not displayed after the projector is turned on and the correct
video source has been selected, check that the Video source device is turned on and
operating correctly. Also check that the signal cables have been connected correctly.
You need only connect to this device using a composite Video connection if Component Video
input is unavailable for use. See "Connecting Video source devices" on page 15 for details.

Playing sound through the projector

You can make use of the projector (mixed mono) speaker in your presentations, and also
connect separate amplified speakers to the AUDIO OUT socket of the projector.
If you have a separate sound system, you will most likely want to connect the audio output
of your Video source device to that sound system, instead of to the mono audio projector.
Once connected, the audio can be controlled by the projector On-Screen Display (OSD)
menus. See "Adjusting the sound" on page 33 for details.
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