[Advanced Sound]; [Speaker Control] - LG 98UM5J-B.AUSQ Owner's Manual

[Advanced Sound]

Press the remote control
Options : [Panoramic Sound], [Bass Boost], [Clear Dialogue], [Treble Boost]

[Speaker Control]

Press the remote control
Options : [Speaker Control], [Audio Output (AUX)], [Coax Output (SPDIF)], [ARC]
/ key to select [Advanced Sound] mode, set bass and treble effects.
/ key to select [Speaker Control] mode, set the sound output device.
27