I wonder how far you would get in your profession if you ignored all the science you just listed and instead went by what someone "likes" about a design. Hey, this airplane wing looks good to me let's go with that! Why do we need to simulate it with FEA? Just build it. I "know" it will be good and all these people explaining the science otherwise have no idea.
There are people who have spent a lifetime trying to correlate speaker preference with objective measurements. Don't dismiss it out of hand by telling us your qualifications in determining if a speaker sounds good or not is designing aircraft. Reminds me of my ex-partner in another audio forum who was a doctor. When we disagreed, he would always say, "I make life and death decisions every day; you think I don't know the answer to this business question???"
It may come as a shock to you but countless designers including Andrew follow this research as well. It is just that they have to create a differentiated products and live within strict cost targets and marketing plans. So that leads to different choices than necessarily the optimal ones.
The speaker you love has been discontinued. If it is so good, then why that?
Ok, I am not a audio engineer and i wouldn't know about the nitty gritty of speaker design a.k.a. what some speaker designer is honing into. I am a aerospace systems lead (entirely different industry) and my customer base is something else. We do a whole lotta (WHOLE LOT) research in my field as well and If we screw up, people die...we get strapped with lawsuits...we lose our shirts and get tossed on the sidewalk rather quickly (high stress). But, in fact, there is a lotta research that we have done in my field that the even the audio industry could borrow, if they chose to innovate more. Too much of a plateau with guys in their comfort zone and very few designers trying something radically new. I may know somethin about aeroacoustics, aeroelasticity, composites, acoustic field tests that we do, whatever, (even has the word acoustic in it!!! lol) but, i agree it's different from three drivers and a crossover in a box that makes music. However, I did play a violin for 30 years and i do know something about music. I assume you're a computer engineer/electrical (EECS kinda guy?) I also did take my fair share of EECS electives when i turned in a disseration a decade ago. So, I can promise you, you wouldn't lose me completely if you started to describe the nitty gritty of it and i am all ears on this (willing to learn). This is precisely why i joined this forum....learn something from experts (if they are experts indeed) in a different field.
Since you mention correlations with "speaker preference to objective measurements", i wonder how far these correlations got and how many holes can be picked apart if some hawk eyed engineer started looking at it. I wonder why there are still so many different brands of speakers that sound so different then. How much do you trust it?
Either way,
a) Ahem, this is what the frequency response of the HUMAN EAR itself looks like (mas o menos). It surely isn't flat (last i checked, check attached). (Correct me if i'm wrong, or let's probe this quest for flatness a bit more).
b) Listeners have all kinds of different ears
c) Listeners listen at different levels
d) Listeners have all kinds of different rooms, placement, etc
e) Listeners have all kinds of different gear
f) Listeners listen to all kinds of different instruments, lousy recordings, different genres of music, etc etc.
g) These are not high end speakers (20k+). It would be wise to assume that folks in this price bracket may not have competent high end electronics, invested significantly in room treatments, etc.
I think Andrew Jones has the engineering aptitude to come come up with a very flat line if it's all that mattered. But, If you are a speaker designer working for a business, i.e, you are trying to capture a significant chunk of the customer base at this price bracket and make your speaker profitable, i.e., you don't wanna lose your shirt (as a business), i.e., you gotta appeal somehow to a large enough number of ears, how would you design it? You sure as heck may have the engineering aptitude to come up with a flat line (not doubting that). But what would it be? A flat line? (in consideration of 'confoundances' a, b, c, d, e, f, g and the above mentioned). Or do you live in complete trust of this "speaker preference to objective measurements" correlation data you've got. Maybe, that's the best you can do....that's all you have to go with, maybe not, enlighten me.
Thanks,