InFocus LP 640 manual Using the audio, Troubleshooting audio, Connecting external speakers

Using the audio

To play sound from the projector, connect your source to the Audio In con-	connect audio cable
nector on the projector.
To adjust the volume, use the buttons on the keypad or remote.
To adjust the balance or turn off the projector’s chime, use the Audio menu
(see page 33).
To mute the sound, press the Mute button.
Troubleshooting audio	adjust volume
If there is no sound, check the following:

• Make sure the audio cable is connected.

•Make sure mute isn’t active.

•Make sure the volume is turned up enough. Press the Volume button on the keypad or remote.

•Adjust the audio source.

•If playing a video, make sure the playback has not been paused.

computer 2 computer 1 monitor out

computer in

	R	S-video 1
computer 2	computer 1	serial control
	network
	L	video 2
monitor out	audio in
	computer in	video in

R	S-video 1
network
L	serial	control
audio in	video 2
video in

Connecting external speakers

The projector can be attached to external speakers that have their own

power source by plugging a speaker cable into the projector’s Audio Out external speakers connector.

speaker cable

		R	S-video 1
computer 2	audio out	computer 1	serial control
		network
	audio in	L	video 2
monitor out		audio in
		computer in	video in

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