They also fall short in the mids. M2s are much better.
The in-ceiling also fall short in the highs due to the tweeter being behind the mounting plane.
Yeah, when I said low end ... I was including 125hz on down ... I'm still looking at this ... there is also something going on above that. The quick and dirty RTA I did confirmed what I was hearing (done in the kitchen which is a fairly large space). I have not really have had time to dig deeper. I'd like to run it again with a better setup (as the quick and dirty part was sending the sweep over bluetooth and a less then ideal mic placement).