"If the speaker designer decided to do a 2db rise in response around 6-10khz you will hear more brightness. But that doesn't make it better does it? That doesnt justify the price being $50k does it? No it does not."
Maybe not, but the first sentence contradicts the original post.
If a designer can do that, and if you do hear more brightness as a result, then it cannot be true that all speakers sound the same. Furthermore, if the designer can engineer that difference in brightness, surely other differences can be designed, for example in bass response or directivity.
It's a separate question whether the SQ differences are significant enough to justify big price differences.
Maybe not, but the first sentence contradicts the original post.
If a designer can do that, and if you do hear more brightness as a result, then it cannot be true that all speakers sound the same. Furthermore, if the designer can engineer that difference in brightness, surely other differences can be designed, for example in bass response or directivity.
It's a separate question whether the SQ differences are significant enough to justify big price differences.