Drhb, I am in the same situation as you in regards to no center channel speaker.
In my Sacd player, there is a setup option to tell it that there is no center channel speaker. Have you checked to see if your player as similar setup options?
I would expect (my expectations may not be supported by reality, though) that any mutichanel capable player would have setup options to allow for a no-center channel playback option, as well as for "traditional" L and R only playback and perhaps other options. These setup options work on the digital data stream in the player before it is converted to the various analog output channels.
Paul
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the 1derful1
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the 1derful1