LG S90TY Owner's Manual page 14

Speaker sound based on input channels
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
CINEMA
Cinematic 3D sound
2.0 channels
5.1 channels
7.1 channels or more
7.1.4 channels
14
Input
DTS
Other
Sound Effects
Rear speakers not
connected
Output
Rear speakers connected