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Changing the TV Settings
Changing the TV Settings 71
Virtual Surround selects an option for
emulated surround sound from the TV speakers;
see “Selecting virtual surround sound” on
page 71.
Speaker turns the TV speakers on or off. You
may want to turn off the TV speakers when you
connect an optional external sound system; see
“Understanding audio output” on page 71.
Choosing the digital audio output mode
You must be watching a digital TV channel to access
the Digital Audio option on the Audio menu. This
option sets the format for the signal provided on the
Digital (Optical) Audio Output connector on the rear of
the TV: Dolby Digital or PCM. Select PCM if your
external digital audio system does not support
surround sound; see “Understanding audio output” on
page 71.
Selecting virtual surround sound
You can enjoy emulated surround sound from the TV
speakers. To do so, for the Virtual Surround option on
the Audio menu, select the mode that you want to
hear: Theater or Music Hall.
Understanding audio output
The input source signal and the Audio menu settings
for Digital Audio and Speaker determine the type of
audio output that you hear from the TV speakers, or
from the external sound system that is connected to
the TV.
For example, if you connect an external sound system
by using the Digital (Optical) connector, you hear
digital sound from the connected external audio system
when you watch a digital TV program. The format of
the digital signal that the TV provides depends on the
Digital Audio setting (Dolby Digital or PCM).
This TV does not support Dolby Digital audio input over
HDMI. When connecting a set-top box, DVD player, or
other device by means of HDMI, set the device audio
output to PCM format.
When you view MediaSmart as the input source (for
example, when using digital media through the Media
button), the digital output depends on the source
media.
The following table shows the audio output
dependencies and the resulting output.
Input source
Audio output at
TV speakers
(Audio menu/
Speaker: On)
Audio output at Digital
(Optical) connector
(Audio menu/Digital Audio)
Audio output
at Analog L
and R
connectors
TV tuner, analog channel Stereo 2-channel PCM Stereo 2-channel
TV tuner, digital channel Stereo 2-channel PCM or Dolby Digital Stereo 2-channel
HDMI, PCM format Stereo 2-channel None Stereo 2-channel
HDMI, Dolby Digital
format
None None None
Component Stereo 2-channel PCM Stereo 2-channel
AV (S-Video or Video) Stereo 2-channel PCM Stereo 2-channel
PC Audio Stereo 2-channel PCM Stereo 2-channel
MediaSmart (Media
button)
Stereo 2-channel PCM or Dolby Digital Stereo 2-channel