The XLO Test CD is an old stand-by setup tool. After the standard L channel/R channel stuff there's tracks of him walking around a room, just talking and hitting a clavis (wood block) with two microphones. You hear his voice saying, "The room is 23 feet by 34 feet, I'm standing between the microphones..." and that is what you hear- exactly! Then as he walks around you hear him walk around, until he's standing BEHIND you, and damned if it doesn't sound like he's behind you!
Then there's a number of tracks, just really good examples of different quality recordings- drum set, classical, etc. Besides recording technique like microphone placement (what you were talking about, what determines sound staging placement) there's also the whole recording chain which can be tube, solid state, and all different kinds of wire, mixing, mastering, etc. A lot of things to listen for.
As far as setting up speakers though nothing beats a tape measure and framing square.
Then there's a number of tracks, just really good examples of different quality recordings- drum set, classical, etc. Besides recording technique like microphone placement (what you were talking about, what determines sound staging placement) there's also the whole recording chain which can be tube, solid state, and all different kinds of wire, mixing, mastering, etc. A lot of things to listen for.
As far as setting up speakers though nothing beats a tape measure and framing square.