https://www.audioholics.com/bookshelf-speaker-reviews/ccb-8-bookshelf/measurements
Not good. Until proven wrong, I consider that only Genelec and KEF solved the coaxial question.
Measurement aside, the reviewer concluded the following:
"The CCB-8 speakers are the kind of addition to an audio setup that makes you want to re-listen to your music collection to see how it sounds on this new gear. Their holographic imaging is the best I have heard in my own room to date. It is eerie how precisely sounds seem to emanate from specific locations over the soundstage. It is not just center imaging either, which I have heard lots of speakers do well (although few do this as well as the CCB-8s); it is over the entire soundstage which the CCB-8s stretch out as a large swath extending well outside their physical locations. As I type this, I am listening to the CCB-8s in my home theater room. I normally write on my desktop computer, because it is easier to write there, but I wanted to listen to the CCB-8s some more, and it is worth the inconvenience of writing on this laptop to hear their magic on my old albums (by the way, current album: William Orbit’s ‘Hinterland’ under his ‘Strange Cargo’ moniker)"