Like TroyD, I experienced an "on the floor image" with my recently acquired M3v4 when I placed them in my living room. These are the same M3v4 that soundstaged so beautifully and filled in my 4,200 ft^3 space.
I first tried them on the short wall and imaging was great but for a few reasons other than just acoustics, I decided to try them on the long wall. I placed them on either side of the bow window about 3 feet into the room and made an equilateral triangle with my MLP. The acoustic width was awesome. However, the front image of many songs was on the floor with all other songs sounding like they were being played by little people. I moved the M3s so they were only a foot into the room, moved my MLP to form the equilateral triangle and BAM...the soundstage was raised to normal! This works well for me.
What I don't know yet is how much soundstage depth I've given up. I have a lot of room treatment to do to clean up the sound. There's depth there for sure but nothing like my main A/V room. It's also worth noting I could not replicate this with my 10 year old Dreamcatchers. Of course the Dreamcatchers don't image anywhere close as the v4. It wasn't a case of distance between the speakers or distance to the MLP. Since I had the M3s four feet away from the front wall in my main A/V space and they imaged very well, I can only conclude that the bow window focused a portion of the M3s' polar responses towards the floor.
