Speaker response flat 20Hz to 22 Khz +/- 0.1 db?

Is the above a dream loud speaker - the best you could ever dream of?

If you think so - then check this out


Hearing it seems is far from a flat response and it varies from person to person.

Can you hear the 16Khz tone? If you are just over 40 (like me) most likely your hearing will stop at around 15.5 Khz or so...no worries there is not much of interest higher than about 14 Khz.....nevertheless interesting and though provoking?
In my lab, we sweeped a function generator sine wave and out of 8 of us standing around the speaker, I was the only one that could hear 18kHz and we are all less than 30 years old. The average seemed to be about 14kHz and one guy couldn't hear beyond 12kHz!
You're confusing a bunch of things. Equal loudness contours have nothing to do with hearing degradation, age-related or otherwise. Even teenaged girls growing up in rural areas are more sensitive to some frequencies than others.

More importantly for audio reproduction, this has nothing to do with flat frequency response. If you want to hear at home what you hear in the concert hall (or something reasonably approximate), you need to reproduce what's produced in the concert hall. Your relative sensitivity to different frequencies will be the same in both places.
I fully agree that equal loudness is not related to hearing degradation or audio reproduction. I make no such claim. However the variations in hearing sensitivity from person to person and over time certainly affect what people hear. The pursuit of perfection of flatness in a speaker response is of course important for acccurate reproduction; nevertheless the variation in hearing abilities puts this pursuit in perspective! (Especially when one considers that human ears are used to calibrate the mix and mastering!)
Shadorne: OK. I was just worried that your post might lead someone to the conclusion: "Why should we care about flat frequency response? Our ears aren't flat!" That would not be progress.
Pableson, Fully agree and thanks for pointing out where my initial post was confusing/misleading :-)