Frequency response + or - 1 dB ??

Sorry to have to disagree Atmasphere. I was hoping it might be folks with your technical acumen that might provide real insight |

Well as you saw, Duke did it- so it can be done and isn't that crazy difficult. Just turns out that isn't how you want to do it. What sort of insight beyond that are you looking for?

The problem as Duke pointed out is that speakers are used in rooms- and rooms have an acoustic signature as well as reflections- the latter playing an enormous role in how we perceive sound.

If one is being pragmatic, its probably better to work *with* human hearing perceptual rules rather than against them.

Gosh, no kidding? 😳

“Duke” ?
Saying reproducing the frequencies of music - any less accurately than “Spot On” -is simply to accept the failure of today’s technology. That’s   been a common problem with mankind in general and is why we laid breakthroughs that eventually move us forward to a new paradigm. 
Its interesting to me that responses to this thread have virtually all been to say why frequency response is unimportant. 
“Groupthinking acceptance of the status quo”?
i suggest that in a very few years; when dead flat frequency response is common; the invaluable contribution it makes to reproducing sound will be considered a “no brainer”. 
Just my 2 cents worth.