Your TV can work as a centre speaker if you connect the AV receiver to the CENTRE SPEAKER IN terminal of the TV using a speaker cable.
[A] AV receiver
[B] Speaker cable (not supplied)
When you perform calibration, use the automatic calibration function of your audio system.
NOTE: The measured distance may be several metres farther than the actual distance.
If your audio system does not have automatic calibration, set the centre speaker level of your audio system manually as you feel appropriate.