Flat Anechoic Measured Frequency Response Speakers

All of the Dunlavy models measured remarkably flat, anechoically.

I think these are anechoic or simulated anechoic (time-gated spliced with close-miked) measurements, but don't know for sure. Click on "Measurements", on the right-hand side:

http://www.klein-hummel.com/klein-hummel/icm_en.nsf/root/prof-monitoring_studio-monitors_main-monitors_O500C#

Duke
dealer/manufacturer

The Usher Be-718 is flatter than most I've seen, as measured by the NRC of Canada (scroll down to Chart 2, LIstening Window, especially):

http://www.soundstagenetwork.com/measurements/speakers/usheraudio_be718/