Wow. Tremendous amount of treble energy. I had a pair of Dahlquist 909s in the same position. Vifa soft dome Tweeter, twin 8" Vifa woofers and a 5,25" Vifa mid. I stood them on a pair of Dahlquist 15" subs, pair of super tweeters on top. Not a handsome array, but stunning sound quality.
The M100s take up less room, and a matched pair will look far better.
Very preliminary impression. Hoping break-in is not a myth.
Currently driven by an upgraded legendary Yamaha M80 amp and B & K Reference preamp. Waiting for the Khartago Klaus Bunge is building for me. Hope this isn't one of those if it isn't broken, don't mess with it situations.
Tomorrow picking up a nice universal player ... will give it a work out with some SACDs.
Will report further.