Kenny:
This is very interesting and somewhat different than earlier descriptions of the 4-way crossover. From this I assume there are substantial ranges of the mid frequencies shared by the mid drivers and ring tweeters. If so, this makes Eric's design much more sophisticated than I had earlier thought.
Now, to a related discussion of soundstage...
Listen often to orchestral music where an accurate soundstage is key to enjoying the experience. Have been using a method suggested to me by Rory at Emotiva, one of their speaker people. He suggests you angle the speakers inwards so that they converge on a spot one foot in front of your nose position when seated.
Am doing this with the DIs and the soundstage is very convincing. Panning from left to right is continuous and the orchestral personnel appear close to their miked position.
Give it a try if you are looking for a seamless, left-to-right soundstage.
Have also noted that the speakers are surprisingly coherent when heard in another shared room. Although you do not hear the same accurate assessment of the individual instruments, the overall sound remains pleasing indeed. Do not know if this is volume, frequency response, or some other characteristic.
AND, I've got to ask...is it KDude66 because the first 65 were already taken? (LOL).