TCL ALTO 9+ Guide De Démarrage Rapide page 9

4
Connect to your TV
There are 3 ways to connect in order of best
performance: HDMI-ARC (refer to 4a), Optical
(refer to 4b) and AUX (refer to 4c)
4a
HDMI-ARC
Connect the Sound Bar with your TV through
the supplied HDMI cable.
Connect the Sound Bar to the power supply
with the supplied power cord.