Kef has come a long way with that tweeter! my R105/3 tweeter wasn't much bigger than a bottle cap with a pole to accept the mounting screw attached to the center of the back of it and the spl and resolution it was capable of was really impressive, the progress since then has really been to managed the sibilance from the early design.
Kef vented tweeter
I am always interested in new technologies that can make a difference and I found this interesting.
https://us.kef.com/blog/vented-tweeter-a-solution-to-provide-the-cleanest-most-articulate-high-frequ...
It seems to be reasonable explanation of what I hear that is quite unique with the kef ls50s ie very high transient detail which seems to help make instruments sound eerily and uniquely real with these speakers.
https://us.kef.com/blog/vented-tweeter-a-solution-to-provide-the-cleanest-most-articulate-high-frequ...
It seems to be reasonable explanation of what I hear that is quite unique with the kef ls50s ie very high transient detail which seems to help make instruments sound eerily and uniquely real with these speakers.