LG S95QR.DUSALLK Owner's Manual page 14

Surround sound function OFF
When the surround sound function is turned off, sound is output differently from the connected speakers
depending on whether the Multi-channel Experience is turned on or off.
Multi-channel Experience ON
Input
AI SOUND PRO
Sound customised with artificial intelligence
2.0 channels
5.1 channels
7.1 channels or more
7.1.4 channels
STANDARD
You can enjoy optimised sound.
2.0 channels
5.1 channels
7.1 channels or more
7.1.4 channels
14
Rear speakers not connected
DTS
Other
Sound Effects
Output
Rear speakers connected