Sony HT-RT5 Operating Instructions Manual page 22

When the TV's HDMI jack is labeled with ARC and not compatible
with HDCP 2.2
If your TV's HDMI jack is labeled with ARC and not compatible with HDCP 2.2, connect
the Bar Speaker to your TV's HDMI jack that is compatible with HDCP 2.2 using an High
Speed HDMI cable. Then, connect an optical digital cable to the optical output jack of the
TV to listen to digital sound.
22
US
HDCP 2.2-
compatible
HDMI jack
High Speed HDMI cable
(supplied)
Optical digital cable
(not supplied)