Panasonic TX-65AX800E Operating Guide

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Advanced settings
1.  Display the menu with 
MENU
.
2. Select 
Sound
 with   /   and press 
OK
 to access.
3.  Select one of the following items with   /   and press 
OK
 to access.
MPX
 / 
Audio Preference
 / 
SPDIF Selection
 / 
SPDIF Delay
 / 
HDMI Input
 / 
DisplayPort Input
 / 
ARC Output
4.  Set with   /   and press 
OK
 to store.
MPX
Selects multiplex sound mode (if available).
Stereo
:
Use this normally.
Mono
:
When stereo signal cannot be received
M1
 / 
M2
:
Available while mono signal is transmitted
 
For Analogue
Audio Preference
(
Auto
 / 
Multichannel
 / 
Stereo
 / 
MPEG
)
 
Selectable options vary depending on the country you select.
Selects the initial setting for audio tracks.
Auto
:
Automatically selects the audio tracks if a programme has more than 
two tracks. The priority is given in the following order - Dolby Digital 
Plus, HE-AAC, Dolby Digital, MPEG.
Multichannel
:
The priority is given to multi-channel audio track.
Stereo
:
The priority is given to stereo (2ch) audio track.
MPEG
:
The priority is given to MPEG.
 
Dolby Digital Plus and Dolby Digital are the methods of coding digital 
signals developed by Dolby Laboratories. Apart from stereo (2ch) audio, 
these signals can be multi-channel audio.