John, thanks for posting the response data. I would also be interested in your subjective reaction to their sound.
In my subjective opinion they sound excellent, just as the measurements imply. Over the years I've grown to love the midrange clarity of small full range speakers but I had to tolerate the limited output level of my single driver systems. Now I have it all. The MCLA is a crossover free full range system with the midrange clarity of a small full range driver but with bass extension and output level to spare. The listening does not get any better than this, IMHO.
I've posted more comments on how they sound on the Parts Express forum here: