You set everything up using page 20 of the manual correct? under Advanced Playback - that's where you set up preferred handling of different types of audio streams. Of course the processor has to see a stream before you get what you're set it up at. So I assume you're playing something and always getting "Stereo", not just turning it on and seeing "Stereo" in the display. And page 20 is where the speaker setup is explained also.
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