I'm still of the opinion that the "timbre matching" issues some people have reported regarding center channel speakers are due much more to placement and room boundary issues than they are to design theory.
While in my case it was certainly a factor, I found that the room boundary issues were only enhancing the difference that’s already there. I base that on my listening in my house where I’ve had the speakers set up so that none of the front 3 had any boundaries within 4 feet.
I don’t think the timber differences I hear are any issue with Axiom’s design philosophy just the differences between a ported 3-way vertical array with a couple different drivers and a sealed 2 way horizontal array.