If you have the time and space you might want to play around with the positioning. Proximity to room surfaces can have a profound effect on a speakers performance. It will always in some way colour the sound and also effects the soundstage. For a start you might want to read this article:http://www.axiomaudio.com/stereo_setup.html
There are many more resources out there.
I mention placement because IMO the M80s are more picky than some other speakers about placement as Sean and I both noticed:http://www.axiomaudio.com/boards/ubbthre...true#Post305946
First I was shocked at how much of a difference repositioning the M80s made in their soundstage when compared to the Loreleis. I’ve experienced that the M80s are somewhat finicky with placement. I’ve also read a couple professional reviews supporting that opinion. However, I’ve never placed them as close together in this room as our first test nor had another brand of speakers in this room to reference them against. Where the Loreleis were throwing sound out about a foot outside each speaker the M80s sound was coming from them. So that when we repositioned the speakers with the M80s on the outside both speakers sound stages seemed about the same width. We did not play with toe-in or anything else to see how things changed. If there is a lesson to be learned by potential and current owners play around with your speaker positioning.