Sony HT-A7000 Help Manual page 119

Help Guide
Sound Bar
HT-A7000
The sound is output from both the speaker system and TV.
Mute the sound of the speaker system or TV.
When you connect the speaker system and TV with the TV center speaker mode cable and set
[Advanced Settings] - [Speaker Settings] - [TV Center Speaker Settings] - [TV Center Speaker Mode] to [On], the
center part of the speaker system sound is output from the TV.
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