Try using a Heil AMT tweeter crossed down to 700Hz. Almost midrange. It has almost no membrane mass - and Newton’s 2nd law would say that it can accelerate faster than a membrane with more mass. It sounds very nice, clear and transparent.
When played as a midrange - with female vocals and holding the tweeter in my hand, it felt like a miniature version of the singles was magically shrunken down a la Alice in Wonderland and placed at the tweeter aperture. Very realistic.
Not having Heil AMT, my next choice would be ScanSpeak 10F operated above 400Hz.
Yep since the beginning it is a filter and amp question more. People want loudspeakers than can handle fast dynamic gaps while the recordings are more and more compressed.
Making rhe group delay clean between the mid and the tweeter should be enough to answer to the question...below the Schroeder frequency so bass driver it is more trickyt but nothing impossible for a good enough quality.
I have had good luck with a number of quality 3 and 4”, now i do not add a tweeter — no way to get the driver spacing close enuff to give an XO a big edge. And a tweeter often just mucks things up.
I think I'm going to steal your idea. It would be easier to place two drivers closer together on much lower frequency. Both paper cones, so similar sound signature. A full range that would do it all, so there's less chance to screw the crossover design. Less problems with vertical dispersion. Maybe that sonido you commented on another thread.
Something else to keep in mind??
No. Or the frequencies it reproduces would be midrange.
My silly thoughts, what's the point of having a very fast mids, in the end wouldn't there be a need to find a woofer that manages the same speed to create a proper synergy ?
That is not a given. You need to know the application and take into consideration the motor. The lighter cone will get away with a smaller motor.
perhaps fast decay, as seen on waterfall plot?
More exactly it's the ratio weigth/motor,
More exactly it's the ratio weight/motor,