Yes, the FR itself is a tad wavier than the best in the pricerange, there's a weird bass boost (easy to cut that especially with parametric EQ), the coax suffers from the massive 10kHz on-axis dip that plagues all but the most advanced coax drivers, distortion may be somewhat higher especially because of Doppler distortion inherent to coaxial mounting of drivers, and headroom might be compromised - but at least theyIn doing so, they offer some verifiable improvements in phase response, crossover sophistication and polar response. The 10kHz anomaly in the polars is entirely because the polars are normalised to the on-axis response, but the dip disappears as one moves off-axis, throwing off the normalisation. Coaxials can also provide smoother vertical dispersion that eliminates vertical acoustic lobing that plagues virtually all non-coaxial speakers . This means it is more tolerant of listening height (though well-designed non-coaxials have a linear vertical window wide enough to cover sitting and standing positions for most listeners outside of desktop/extreme nearfield listening).This also means that dip is far less audible or consequential than it seems; even the hyper-expensive TAD coaxial speakers have a dip there. The only people to have completely eliminated it are KEF. ELAC, SEAS, TAD, Technics (see below) coaxials all have it to some degree. Designs like this KS that merit consideration (and will pave the way to further improvements) fall under the radar, while the broader market chooses to play around with passive monkey coffins (and for the most part not even fantastic ones like the Philharmonic BMR). The market isn't at all meritocratic.