Respectable but not state of the art when it comes to measurements compared to modern designs like the 4367/M2 or Revels. What is interesting is that even the reviewer notes that the speakers sound good even though there are limitations with its measurements.

I think this review does add credibility to the claims that the XPL-200 are among the very best speakers ever made as its flaws do not appear to impair the musical experience while also helping to mask weaknesses in the source recordings (whereas modern gear may be too accurate to a fault).