Nothing like changing the goalpost when data shows that what you think and what is there are two different things. Of course you state that range with no references. So let me give you one from Linkwitz: Constant directivity loudspeaker designs
"“When designing a speaker system for home use the objectives of any particular design will depend on the specifics of the application and acceptable trade offs. As such it is difficult to state categorically any specific set of design objectives for a CD speaker. With regard to constant directivity, my current interpretation would be that a CD speaker, intended for use in home environment, should have the ultimate goal of maintaining uniform polar response above the Schroeder frequency. As a rule of thumb, this translates to maintaining uniform polar response form about 100 Hz and above. Specific design objectives for my designs may be found at my website.”
Pretty much invalidates your claim. Not only that, conventional non-cardioid speakers meet your criteria anyway:
Speakers like that Genelec not only do it in horizontal axis, but also vertical:
Here is the vertical dispersion of D&D 8c:
And if you want to go by reputation of what Pros use, there is no question that is hugely in favor of Genelec.
So you say. If we want to go by personal experience, I have tested and listened to 250 speakers with opposite outcome. Whatever you tested is dwarfed by that. I am also showing measurements and specific research that contradicts your claims. You don’t have any of that but still demand to be believed?
Is that right? People should buy what doesn’t sound as good to them? Because you claim that they should to justify your mistaken notions about audio fidelity?
No, we go by science and that science is proven over and over again. Here is Dr. Olive showing correlation between listening tests results and what slope in-room frequency response measurement should have:
A Multiple Regression Model for Predicting
Loudspeaker Preference Using Objective
Measurements: Part II - Development of the
Model
Sean E. Olive, AES Fellow
"Target slopes were determined separately for Test
One and for our larger test sample (70 loudspeakers)
used for the generalized model described in section 5.
The target values are based on the mean slope values
of speakers that fall into the top 90 percentile based
on preference ratings. Target slopes are defined for
each of the 7 frequency curves (see table 2). The
ideal target slope for the on-axis and listening
window curves (0 and –0.2) is identical for both test
samples, which indicates that the on-axis curve
should be flat, while the off-axis curves should tilt
gently downwards."
That is precisely what I have been saying. And it comes from large scale testing of speakers and it completely invalidates your claims.
So whether it is the volume of my personal experience or the research, the opinions you have put forward have no credibility. Heck, you can’t even share one measurement of a speaker or a room you have performed.
you are absolutely right. Now I read that the first ns10 in 1978 was a home-speaker, but the engineers took the speaker to the studio’s. Could that be the reason that old recordings can sound a bit too warm?