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/

Hesson11, that is a very eductional set of curves. Thanks for posting the link.

In the 45 to 75 degree family of curves, you see that big bump between 2 kHz and 5 kHz? Unless you listen nearfield or under quasi-anechoic conditions, that bump is probably audible - and it's right smack in the region where the ear is most senstive, according to the Fletcher-Munsen curves. This excess off-axis energy in the lower treble region is caused by the tweeter having a very wide pattern just above the crossover point, and it's there on most speakers - but you cannot predict its presence from either the on-axis anechoic curve or the "listening window" curve. Kudos to SoundStage for measuring the off-axis response out to 75 degrees.

Duke

Thanks, Duke. I'm guilty of focusing too often on on-axis measurements, so it's good to get a bit of education from one as knowledgeable as yourself.

BTW, I assume most Audiogoners are aware of this, but if you go to the link below, you'll find a great many speaker reviews that feature the same kind of NRC measurements as shown for the Usher Be-718.
-Bob

http://www.soundstageav.com/avreviews_speakers.html