It is unfortunate that Soundstage did not, or could not, afford the full set of NRCC data, including sound power and/or DI. That would have added significant value to the interpretation of the data. Nobody consulted me, the creator of the measurement system The power compression data are quite misleading, as I have commented on previously - and I created that too, a very long time ago :frown:From the deviation graphs it looks to be able to play loud, so I'm guessing it's a 3- or 4-way speaker and the bumps in the frequency response reflect the ranges of each driver. The dispersion looks quite even except maybe 500-1khz. I bet this speaker would sound good if equalized to be flat on axis.
You are right that EQ based on the anechoic data would improve this speaker.