Sony STR-AZ7000ES Startup Manual page 300

Help Guide
Multi Channel AV Receiver
STR-AZ7000ES/STR-AZ5000ES/STR-AZ3000ES
Outputting the center speaker part of the sound from the TV speakers (TV Center Speaker Mode)
If your TV has an S-center speaker input jack, you can use the TV screen as a center speaker by connecting the TV to the S-CENTER OUT jack of this receiver.
Select [Setup] - [Speaker Settings] from the home menu.
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2 Select [TV/Screen Center Settings].
Select [TV Center Speaker Mode].
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Select [On].
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Note
This function does not work in the following cases:
[Speaker Pattern] is set to a setting without center speaker.
[Bluetooth Mode] is set to [Transmitter].
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