To use Smart Sound Mode

Provides the optimized sound adjusted for each content type.
If the Smart Sound Mode function is enabled, Sound Mode, Virtual Surround Plus and Clear Voice ll are automatically adjusted.
To use Virtual Surround sound

LG’s proprietary audio processing technology allows 5.1ch-like surround sound from two speakers.
If Clear Voice ll is set to ON, Virtual Surround plus will not be chosen.
To use Clear Voice ll function

Boosts voice clarity.
To set Volume Mode

Sets various modes for volume control.
Auto Volume | Sets Auto Volume to On. Different volume outputs from program to program. They are then automatically adjusted for convenient TV watching, when clicking through different program. |
Volume Control | Using a single volume curve may result in an inaudible or loud sound depending on the environment. Adjusts volume levels depending on the time of day (day / night). |
To synchronize audio and video

Synchronizes video and audio directly when they do not match.
If you set AV Sync. Adjust to ON, you can adjust the sound output (TV speaker or External Speaker) to the screen image.
TV Speaker | [This feature is available on certain models only.] Adjusts the synchronization of the sound from the TV's internal speakers. The "-" button makes the sound output faster and the "+" button slower than the default value. |
External Speaker | Adjusts how the sound is synced from external speakers, such as an external speaker connected to the digital audio output port, LG audio device and headphone. The "-" button makes the sound output faster and the "+" button slower than the default value.
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Bypass | Outputs broadcasting signals or the audio of an external device without audio delay. Audio may be output before video as it takes time to process video input into the TV. |
To use Sound Option Setting
[This feature is available on certain models only.]

Analogue Out
[This feature is available on certain models only.]
Allows the user to select the Headphone or External Speaker (Audio Out) menu depending on the device connected.
Balance
[This feature is available on certain models only.]
Adjusts left / right audio balance.
Sound Optimizer
[This feature is available on certain models only.]
Allows optimized sound for custom TV installation.
Off | General sound mode. |
Wall-mounted Type | Optimizes sound for a wall-mounted TV. |
Stand Type | Optimizes sound for a stand-mounted TV. |