Lg PA77U User Manual download pdf (Page 115)

115

CONNECTING DEVICES

Connecting a Digital

Amp

Using an optical cable, connect the

digital audio input port of a digital amp

to the OPTICAL DIGITAL AUDIO OUT

port of the projector. The output of an

amp with a digital converter must be set

to the desired audio format. When using

a HDMI cable to connect a home theater

or when connecting an optical output

to an external audio device, set Sound

Out to External Speaker (Optical/HDMI

ARC) as shown below. If a projector,

home theater, or the speaker of an

external audio device is operating at the

same time, there will be an echo.

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NOTE

y

Also, refer to the user manual of the

audio device to connect.

y

When connecting this product to

other devices, make sure to turn off

and unplug all the devices.

y

The audio output of this product

has wide-ranging audio bandwidth,

so the receiver volume must be

adjusted properly.

Speakers can be damaged by

unexpected high frequencies.

y

Connecting the OPTICAL DIGITAL

AUDIO OUT port of the projector

to the digital audio input port of a

digital amp and the audio input port

of the projector to the analog audio

output port of the digital amp can

cause sound oscillation due to the

closed loop. Remove one of the two

connections to prevent this.

(This also applies to home theater

devices.)

* Optional

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