Thanks again Trond. Much appreciated. What you mentioned about the elevation control is pretty much what I figured it was for.
Regarding the pseudo inverse situation, do you have any information about what that does and how not including it will affect my listening tests? I didn't see much of a description about that in the tracker.
I have been directly comparing your cube decoder with Bruce Wiggins one and, from the limited time I've had so far and my less than optimal current speaker configuration, I prefer the sound of yours. It seems to provide better rear localization. I did have to reverse the polarity of the two lower rear speakers though for the sound localization to work well enough. As I mentioned in my other thread though, that could be either an amplifier issue (I'm running those speakers from a different amplifier) or it could be because those two speakers are not Auratones and I've had to EQ them to get them timbrally similar.
Or perhaps this is related to the pseudo inverse thing you're speaking of?