I put my M2OW on top of my M5s which were on stands and 3 feet away from the front wall. The M2OW sounded like garbage. I called Deb to tell her to take that crap back. She happened to be in Ian's office when she took the call and I ended up chatting with Ian for 2 hours. LOL!
At the end of the call, which by the way included 3 minutes of M2OW discussion, I decided to try them on the wall on either side of my bow window in my living room. After doing that, I really felt bad for telling Deb and Ian they sounded like garbage. They are like magic on the wall like that.