Hi There,
The disc menu had a) English Dolby Atmos.b ) German 5.1 c) Spanish 5.1 D ) French 5.1 .When switched to the 5.1 programmes ,the centre speaker sound (vocal) worked perfectly, but, when I selected the English Dolby Atmos programme, the centre speaker sound vanished ,and it reverted back to stereo left/right voice sound.
I have a Denon AVR-1909 Receiver ,maybe its time to upgrade ?