AI Sound Pro uses LG deep-learning audio processing to adjust sound and create a virtual surround effect based on the type of content. If AI Sound Pro does not work as expected, confirm your TV’s webOS version and make sure the audio output device supports the feature.
This issue is commonly caused by using an unsupported audio output path, having AI Sound Pro turned off, or following steps that do not match the TV’s webOS version.
AI Sound Pro is designed for the TV’s internal speakers and for compatible external audio devices connected through the TV’s HDMI (ARC/eARC) port when Sound Share is supported. If you are using a different connection type or an incompatible device, AI Sound Pro may be unavailable or have no effect.
If AI Sound Pro is Off, the TV will not apply AI-based processing. Depending on the model year, the feature may appear as AI Sound Pro or AI Sound.
LG TVs use webOS, and the settings structure can change by release year. If you follow steps for a different webOS version, you may not find the same menu names or locations.
1) Switch the TV to an external input (for example, HDMI 1).
2) On the remote, press the Mute button three times in a row.
3) Check the webOS version displayed in the Quick Settings menu.
Note: If you are on the Home screen or using smart functions, the Quick Settings menu may not appear. Change to an external input and try again.
Setting: Settings > General > AI Service > AI Sound Pro
1) Press the Settings button on the remote.
2) Select All Settings.
3) Open General.
4) Select AI Service.
5) Set AI Sound Pro to On.
Tip (Magic Remote): You can also press and hold the Settings button for more than one second to open All Settings directly.
Setting: Settings > General > AI Service > AI Sound Pro
1) Press the Settings button on the remote.
2) Select All Settings.
3) Select General.
4) Select AI Service.
5) Turn AI Sound Pro On.
Setting: Settings > Sound > AI Sound
1) Press the Settings button on the remote.
2) Select All Settings.
3) Open Sound.
4) Turn AI Sound On.
Note: Some model years list the feature as AI Sound (instead of AI Sound Pro).
Setting: Settings > General > External Devices > HDMI Settings > SIMPLINK (HDMI-CEC)
1) Connect the soundbar to the TV’s HDMI (ARC/eARC) port.
2) Press the Settings button on the remote.
3) Select All Settings.
4) Go to General > External Devices > HDMI Settings.
5) Set SIMPLINK (HDMI-CEC) to On.
6) If your TV has a Sound Out setting, select HDMI(ARC) Device when using ARC/eARC.
This helps the TV properly control and output audio to compatible devices through HDMI.
If the steps above did not resolve your issue, please visit the LG Electronics Support website. You can chat with our virtual assistant or schedule a service repair for further assistance.
※ Please note that service fees may apply for engineer visits if your product is out of warranty.
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