Brian Cheney wrote about the Dynaudio tweeters:
Dynaudio, in my experience, achieves clarity with peakiness and a trademark edge that I dislike intensely.
Brian, I agreed completely with this viewpoint, having auditioned a number of Dynaudio monitors and floorstanders, but the 1.3SE sounds nothing like my past experiences.
When compared to the other speakers I happen to have at the moment, the 1.3SE sounds darker and almost muted, but as you stop comparing and decide to enjoy the music, you begin to realize that the treble is now being presented in the proper pespective with the correct amount of detail and air without exaggeration, but I still haven't ruled out the Response 1SC.
This has no bearing on whether or not the 626R, which is in the same relative class of monitors, but a bit larger, may be even more natural or correct with the new FST tweeter. I guess I would have to learn that for myself someday. I wonder what kind of difference the FST would have made when I had the RM2? Maybe I'd still have them if they had the FST tweeter.