Hey guys. First time poster, though I'm active on AVSforum.
The discussion going on here is what prompted me to register for this board.
You see, It seems to me that a fair number of posters on this thread are under the impression that a speaker's measurements, especially frequency response, is the be-all-end-all predicter of performance. I believe it is equally important to use your ears, especially in the design stage. In fact, because KEF has been mentioned so many times, and because we all know that they place high importance (as does Harman) on dispersion, its worth mentioning that their design process has actually incorporated more listening tests than they did at one time, yielding what most would consider better products because of it.
Having said that, I would also like to address the B&W Diamond tweeter discussion going on. I have owned this tweeter before, on a pair of 802 D2's, and it's anything but harsh. Weather it has a 10khz bump or not, I often refer to it as the best tweeter I've heard to date, and that includes the beryllium unit in a pair of Focal Sopra 2's I had for a while, and the aluminum dome of the KEF Reference 1 which I recently purchased and am awaiting delivery of.
The thing about 805 D3's not being better than LS50's?...that's just crazy. Yes the LS50 is a great little monitor. I have a pair set up in my office and quite enjoy them. However, having heard the 805 D3 on many occasions I can say that Id absolutely take those over the LS50 in a heartbeat. 805 is a MUCH more open and dynamic speaker. Really, it's not even close. The same thing regarding the chatter of a KEF R700 besting an 804 D3 at high level. Really, I don't know if whoever believes this just loves KEF and hates B&W or what, but it's pretty obvious from some of the comments that there is very little hands on experience involved with the products in question.
I say all that to say this...
Stop staring at graphs and instead go out and listen to the things. Measurements are certainly our friend, but as (even) Dr. Toole has pointed out, it is relatively easy to make a loudspeaker these days with a flat frequency response. That doesn't tell you how the thing is going to sound. Timbre is something that is darn near impossible to measure. At best we can look at the frequency response, decay plot, distortion, dispersion and linearity and using all those metrics have a FAIRLY good idea of how something should sound, but without using our ears we would still be wrong 100% of the time. If you and I were to both sing a pitch perfect note, you would still sound like you and I would sound like me. Loudspeakers are no different.