Connecting an AV receiver or digital sound bar 
You can enjoy Dolby Audio™ multichannel sound from your TV if you connect a digital 
amplifier or sound bar (not provided) in either of two ways: 
•  Digital optical audio out (S/PDIF) – Connect a TOSLINK optical cable (not 
provided) from the TV to the Optical input on your receiver or sound bar. 
•  HDMI
®
 ARC – Connect an HDMI
®
 cable (not provided) from the HDMI (ARC) 
connector to the HDMI
®
 input on your receiver or sound bar. This connection 
uses the Audio Return Channel (ARC) feature of the HDMI
®
 specification to 
output sound from the TV to a compatible device. To use this feature, you 
must configure the TV to enable HDMI
®
 ARC, as explained in Enable HDMI
®
 ARC. 
 
Preparing for Internet connectivity 
If you want to watch streaming content and take advantage of the cool features of 
your TCL Roku TV, connect it to the Internet through a wireless modem/router or a 
wireless access point (not provided). The TV has a built-in wireless LAN adapter.  
Note: 
The TV supports only its internal wireless network adapter—it does not support 
the use of a USB network adapter.