To use TV speaker

SETTINGS AUDIO Sound Out TV Speaker

[This feature is available on certain models only.]

Sound is output through the TV speaker.
To use External Speaker

SETTINGS AUDIO Sound Out External Speaker (Optical)

[Only available for models with an optical port]

Sound is output through the speaker connected to the optical port.

SETTINGS AUDIO Sound Out External Speaker (Optical) Digital Sound Out

[Depending on model]
Sets up Digital Sound Out.

Item

Audio Input

Digital Audio output

Auto

MPEG

Dolby Digital

Dolby Digital Plus

HE-AAC

PCM

Dolby Digital

Dolby Digital

Dolby Digital

PCM

All

PCM

To connect and use LG audio device

SETTINGS AUDIO Sound Out LG Sound Sync (Optical)

[Only available for models with an optical port]
Connect LG audio device with the Sound Sync logo to the optical digital audio output port.
LG audio device allows you to enjoy rich powerful sound easily.
To use Headphone

SETTINGS AUDIO Sound Out Headphone

LCD MTV [Only available for models with an earphone/headphone port]
Sound is output through the headphone connected to the earphone/headphone port.
    If you connect headphones while the TV is powered on, it automatically detects the headphones and sounds through them.