Yoda, Have you thought of this. Why not use the MTM configuration facing to the front, and using the second Tweeter facing outward so as to radiate against the wall. I would think that this would give greater depth and presence. I have just purchased several Bose cone tweeters from E-Bay that are 4 ohm each. They have a threaded screw hole in the back and with attachments, can be turned to face the desired direction. This is one of the things that helped make Mr. Bose famous. This way things could be easier to do with a crossover than trying three woofers, since you will run into the Parallel/Series problem. If you have a good crossover program, like X-Over by Harris Tech, plugging in the necessary values will make it relatively easy to plan. What do you think? John L