To use TV speaker
AUDIO Sound Out Internal TV Speaker
[This feature is available on certain models only.]
Sound is output through the TV speaker.
To use External Speaker
AUDIO Sound Out Audio Out (Optical)
[Only available for models with an optical port]
Sound is output through the speaker connected to the optical port.
[This feature is available on certain models only.] SimpLink is supported.
To use Internal TV Speaker + Audio Out (Optical)
AUDIO Sound Out Internal TV Speaker + Audio Out (Optical)
[Only available for models with an optical port]
Audio is played through the TV’s built-in speakers and the audio device connected to the digital optical audio output port simultaneously.
To use Digital Sound Out
AUDIO Sound Out Audio Out (Optical) / Internal TV Speaker + Audio Out (Optical) Digital Sound Out
[This feature is available on certain models only.]
Sets up Digital Sound Out.
Item | Audio Input | Digital Audio output |
Auto | MPEG Dolby Digital Dolby Digital Plus HE-AAC DTS |
PCM Dolby Digital Dolby Digital Dolby Digital DTS |
PCM | All | PCM |
To connect and use LG audio device
AUDIO Sound Out LG Sound Sync (Optical)
[Only available for models with an optical port]
Connect LG audio device with the
logo to the optical digital audio output port.

LG audio device allows you to enjoy rich powerful sound easily.
To use Headphone
AUDIO Sound Out Headphone
[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.
To set sound out to headphone, some features related to the sound settings may be unavailable.