Here is some my thinking out load.
Most of people use speakers with modern sharp tweeters like Beryllium or LPZ
use
transistor amplifiers with a deep general feedback. These amplifiers had
a big amount of high order distortion that sharp tweeters highlight.
So, the
speakers with Beryllium or LPZ tweeters should sound much better with tubes or
transistor amplifiers with low level of high order distortion (like amplifiers
designed Nelson Pass).
Regards,
Alex.