The Sound Is Output From Both The Speaker System And Tv - Sony HT-A9 Help Manual

Help Guide
Home Theatre System
HT-A9

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 Mode] to [On], the center part of the speaker system
sound is output from the TV.
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