Stereo_phile, your finding are very interesting indeed. It would concern me if the sides of these speakers were vibrating as you have mentioned along with the midrange driver working so hard.
Regarding the vibration, these cabinets are aluminum so that would add a unwanted sonic signature which I would not think is pleasant. Regarding box speakers this has always been one off the negatives, the box interacting. There are box speakers out there that I have experienced that do not have this issue, Egglestons, Artemis and I have heard that the Rockport Altairs to name a few.
Interesting that your friend "slash dealer" has a very large listening room and that you kept making reference to him having many high end speakers along with mentioning he had MBL 111's and that the dynamics did not match up to the Anat Reference II Studio speakers.
Your friend should be using the MBL 101E's and not 111's, the 101E's would be better up for this task especially if it is a large room and secondly choice of amplification would have an effect and your issues regarding dynamics and transients would be non existent. The Anat Reference II Studio speakers do have a powered sub correct so you are only driving the top.
If comparison are to be done they should be done comparing apples to apples and not apples to oranges.
I personally have not heard Anat Reference II Studio speakers but a few who have have told me they are nothing special but others have said the yare worth a listen so I look forward to hearing them but if the cabinets which are aluminum are vibrating would concern me as it would add unwanted sonics.
The Dynaudio Evidence Temptation, I have heard these many times and would have to disagree with your findings but they are your opinions, I also read that you got rid of yours and read why. I believe there were other issues going on and the speakers were not to be the blame. I heard the Temptation's sound best when paired up with McIntosh 2KW amps and 1000P pre-amp in a rather large room where they can breath. 6-8 feet space behind the speakers to the wall, 5-6 feet space from the outside of the speaker to the wall and aprox. 8-9 feet between them and not like they were positioned in your room as per your pics. I would suspect the speakers you chose might be a better fit per size wise which are very nice speakers also but at the same time if the set-up is the same as per your pics it would be far from ideal and in my opinion you are not really getting to hear the full potential of the speakers. The Anat Reference II Studio speakers may work even better due to their design.
Kusina on 11-17-08: your post said I have a Burmester 911 Mk 3 amp. While the Burmester 011 pre is perfect for it, I chose not to use that pre because it lacks a balance control. After trying an MBL 5011, I ended up with a Krell Evo 202, which has a 50 ohm output impedance (the Burmester amp likes a pre with a low output impedance). After some experimentation with interconnects, I purchased a Kimber Select 1136
Your reply above seems to differ from this can you clarify.