Perfect response Mapman.
Any audiophile worth his/her salt knows that the act of 'just moving' a system creates a different sound than the system had 'before' the move. Further, that it takes a while for things to settle in, so that the sound is back to its normal self.
Why...I don't know.
Some people think it's the wires that have to get back to whatever.
I've never heard a plausible engineering explanation...but this brings us to the 'show experience.'
Having done more than a couple of shows as an exhibitor, I can say this...the show experience is usually a shadow of what any given system can do under what I'd have to call typical circumstances.
The MBL's being omni polar create one extra issue.
Generally the bi polars and omnis sound less than they are in show settings.
Maggies never, at least to me, sound as good as I have heard them.
The MBL's can sound downright awful...and seem to suffer more than other, traditional dynamic loudspeakers.
In Munich, if memory serves, I heard them, and they were something to behold.
They are simply the best speakers I've personally heard..not in all ways, but over all.
One time, after buying a pair of CS5 THIEL loudspeakers...breaking them in, enjoying them...subsequently selling more than any other dealer on the planet...(bragging), Jim Thiel and I were having dinner and wine.
I asked, 'Jim, how could you improve the CS5?'
Without hesitation he said, 'I'd put another pair back to back, making them sort of omni polar.'
Funny, that, at the time sounded like heresy...it wasn't 'til I heard the omni MBL's set up correctly, that I got it.
I do now.
Larry