LG BD645 Owner's Manual page 52

52 Appendix
y You must select a digital audio output and
a maximum sampling frequency that your
Amplifier (or AV receiver) accepts using [Digital
Output (SPDIF)], [HDMI] and [Sampling Freq.]
options on the [Setup] menu (see page 26).
y With digital audio connection (DIGITAL AUDIO
OUT or HDMI), Disc Menu button sounds of BD-
ROM may not be heard if the [Digital Output
(SPDIF)] or [HDMI] option is set to [Primary Pass-
Thru].
y If the audio format of the digital output does
not match the capabilities of your receiver, the
receiver will produce a strong, distorted sound
or no sound at all.
y Multi-channel Digital Surround Sound via digital
connection can only be obtained if your receiver
is equipped with a Digital Multi-channel decoder.
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