HDMI ARC (Audio Return Channel) is a feature that allows audio to be sent from a TV to a soundbar.  Besides audio, ARC also allows the TV to control the functions of the soundbar using the TV's remote.  This feature is called HDMI CEC.  An ARC compatible soundbar will only work if it is plugged into the HDMI jack on the TV that is labeled ARC or eARC.  


ARC is turned on by default on most modern TVs, but if you find that ARC isn't working with your ARC compatible Zvox you may have to enable ARC on your TV.  The table below shows the location of the ARC settings on most TV brands. 


Brand Location of Setting
SamsungSettings > All Settings > Connection > External Device Manager > Anynet+ (HDMI-CEC) >Turn ON
LGAll Settings > Sound > Sound Out > Audio Out (Optical/HDMI ARC)
Sony
Home > Settings > Display & Sound > Audio Output > eARC Mode > Auto
SharpMenu > System Options > Aquos Link Setup > Audio Return Channel > Auto
VizioSettings > Audio > eARC> Turn On
PanasonicMenu > Setup > VIERA Link > Turn On
Roku TVHome > Settings > System > Control other Devices (CEC) > ARC > Turn On
Amazon Fire TVSettings (Gear Icon) > Display & Sound > HDMI-CEC Device Control > ARC/eARC > Turn On
Google/Android TVSettings > Channels and Inputs > Inputs > Control Other Devices (CEC) > Turn on all options
InsigniaSettings > Display & Sounds > External Inputs > HDMI CEC Device Control >ARC/eARC> Turn On
HisenseSettings > Audio Output Settings > HDMI-eARC > Turn ON