LG 55LN5710 - Manual (Page 26)

ENGLISH
26 MAKING CONNECTIONS
Connecting to a Sound Bar
You may use a Sound Bar instead of the built-in speaker.
y y If you use a Sound Bar instead of the built-in speaker, set the TV speaker to off in the user menu.
NOTE
Digital Optical Audio Connection
Transmits a digital audio signal from the TV to a Sound Bar. Connect the Sound Bar and the TV with an optical audio
cable as shown in the following illustration.
For LN5790 series
OPTICAL
DIGITAL
AUDIO OUT
OPTICAL AUDIO IN
Sound Bar