magnepan experimenting

i have my modified mmgs performing pretty well. so tonite i turned them around to face wall with the metal perofrated side facing the room. this moved the tweeters to the inside configuration. they are on elevated stands and are braced also they sound very good but slightly more defined. can someone please explain what might be going on here? thanks
Wouldn't switching the position of left speaker with the right speaker do the same thing? My MG12's sounded better with the tweeters in the middle but with the speakers spread further apart. That worked for me. And then when I had the tweeters on the outside it was a different sound but the highs came from the outside and were not as centered. But facing the wall you get more reflection. I may be wrong but I have always gotten less information when standing behind the Maggies than forward facing. I assume it is simply the reflective nature of di-poles. Hmmm interesting.
thanks for the comments and the article. i don,t a/b and choose to listen for a week or so.. the performance
with the spks "pointing" at the back wall is very nice to say the least. i,m keeping them set up this way for a while. i.ll report back......
Wouldn't the rear wave be the same as the front just the opposite phase? If that is correct you can essentially accomplish the same thing buy using the panels front facing with tweeters on the inside and wire them out of phase, positive speaker wire in negative terminal, etc. I have played with this in my set up and I did like the way it sounded, ultimately I left the tweeters on the inside but hooked the speaker wire up the correct way.