That looks pretty dandy, no??
Yes, the ELX measurements are solid.
Having compared them extensively over many months to Revel F226Bes, and having reconciled what I hear with the Klippel measurements, I'll give a few quick thoughts before I'm forced to turn my attention back to work...
I think for most typical rooms and applications (including for both music listenting and HT), these speakers will offer a true end game package for many people.
As long as I am reasonably on-axis to the tweeter vertically, I personally want for nothing with the ELX towers. They extend down to about 25Hz in my room, offer the best higher-midrange reproduction that ever I've heard in a pair of speakers, which extends all the way out to the high treble, and they play incredibly loud without a hint of strain or audible distortion (roughly 95 dB continuous w/ 115+ dB peaks measured from the MLP, which is approximately 9 ft from the speakers). The mid-upper bass sounds incredibly full and in perfect balance with the rest of the frequency range, accounting for room modes that would impact virtually any speaker.
From purely a sound reproduction perspective, where these might not be a perfect fit, at least in my view:
- If you require more vertical dispersion, perhaps because you'll frequently be moving up and down out of the sweet spot, or if you are looking for more of a "party / recreation room" type of speaker. Even when outside of the vertical listening window, they do not sound bad at all, and they actually retain a very pleasant sound quality top to bottom, however, there is a noticeable treble drop off and some of the more impressive and visceral aspects of the treble fades way. The Revels maintain their higher frequency tonality much more solidly when I stand up.
- If you listen very loudly while having a large room to fill and / or are sitting at far distances from the speakers. While the distortion measurements for drivers of this size are impressive, these aren't meant to take the place of PA speakers for truly big spaces and ultra-farfield applications.
- If your sidewalls are very close or if you otherwise don't have a need or desire for wide dispersion.
Otherwise, these absolutely deserve an audition if within your budget, even if your budget is much higher than they cost.