we're thinking of Focal. or Dynaudio, or Paradigm, or Infinity .... or Theil ,,,,, or so on and so on.
Speakers that are made for audiophile type customers are designed to be as flat as possible, much like 'monitors' because flatness is the holy grail of audiophiles as much as it is of engineers.
yes its definately relevant..
even then they all sound different, i guess its all in the design. I've always thought its weird how they all are flat per specs but they all sound so different. I would think engineers try to be flat and marketing/sales want pretty and "specs on paper" that are flat. (or at least a good soundtrack to make them sound great

)
I'm liking the Mackies, I think the DYNBM5A were a bit easier to listen to. YSM1P's were closer to the DYN's imo...like a cheaper level of DYN's. But the YSM1p's were close enough to not justify spending the extra $600 for my hobby HR room needs and am very happy with them all around on all points.
The Mackies to me are more like the JBL family I've heard briefly, especially the tweeter...add a little more bass, and a little more in the vocal reverb tail area than the YSM1p's. subtle but noticeable differences. These seem to cover more range and the amps seem to really have more volume under the hood than the YSM1p"s.
They are the $1000+ level like the DYN5A.
the 6" vs 8" is possibly a main difference too.
SG, some great points you made..
I think about that comment the flatness shows the quality of the tracking.
And the addition of the lowend does change the mid's.
As far as the bass being tight or not tight? it must be relevant as I think its gorgeous sounding...but then I haven't heard Blue Sky System Ones or DYN BM15 or 6's etc..
I did read a old bizarre post, where a dewd in Indiana got a pair of Mackie Demos and one was US and one was China?

...he was saying one Power button clicked the other didn't and there was a huge sound difference.
I checked mine out and both are the same (they click). I don't know if these are refurb, clearance of the backroom shelf speakers for the new "egg" 824, or how there could be different version singles floating around?
Anyone got an input on this? strange...
As far as I can tell only the white lettering on the back is slightly different...
I'll pop out the speakers and see if their the same on the US and the China made. They sure sound the same to me on this limited-short time of listening.
I heard no difference between the US and China built.
SG,
I don't get the Mfg code? These seem different than the CODE key you posted. I wonder if these are the same year or several years apart or maybe its just the amplifier thats not the same?...or maybe just the black metal case thats not the same? just curious.