LG HECTO - Manual (Page 70)

70 CUSTOMIZING SETTINGS
Item Description
Sound
Setting
Balances the sound.
Mode
ARC Mode
External audio devices can be connected via
High-Speed HDMIⓇ cable without an extra optical
audio cable to output SPDIF. It interfaces with
SIMPLINK.
For an external device that supports ARC (Audio
Return Channel), connect it to the HDMI(ARC)
port.
Balance Adjusts left/right audio balance.
TV Speaker When listening via speakers on external audio
devices connected to the Laser TV, such as
home theatre equipment, the Laser TV speaker
may be turned off. If there is a home theatre
device connected to SIMPLINK, setting the Laser
TV Speaker to Off will turn the home theatre
equipment on automatically.
Digital Sound
Out
Sets up Digital Sound Output.