Setting up a digital audio connection 
To take advantage of your TV’s advanced audio capabilities, connect it to an external 
amplifier, receiver, or sound bar by using either of these two digital audio 
connections: 
•  HDMI ARC – The HDMI
®
 Audio Return Channel enables the TV to output 
digital audio on one of its HDMI
®
 connectors. The connected amplifier 
can also function simultaneously as an input source to the TV, if 
needed. To use the ARC capability, you must connect an HDMI
®
 cable from 
your amplifier’s HDMI
®
 ARC connector to the HDMI ARC connector on the TV. 
You also must: 
o  Be sure your HDMI
®
 cable is certified by HDMI
®
. 
o  Enable HDMI ARC under Settings > System > Control other devices (CEC), as 
explained in Enable HDMI
®
 ARC. 
•  SPDIF optical – The SPDIF optical connector outputs a digital audio 
signal. To use the optical output, connect a TOSLINK optical cable 
from the amplifier to the Optical or SPDIF connector on the TV.  
Note: 
Dolby Audio™ supporting Dolby Digital Plus™ format is not available 
through the SPDIF optical output. This format is only available through the 
HDMI
®
 ARC connection.
 
After making the required HDMI
®
 ARC or SPDIF optical connection, go to Settings > 
Audio > S/PDIF and ARC option and select the audio format to use.  
Note: 
In most cases, 
Auto detect
 is the best option. Other settings can result in no sound 
when the content you are viewing does not contain the audio stream type you 
selected.