Thoughts after a few weeks:
- Not what I expected, for better or for worse! :) I used to have some Apogee speakers with a very large ribbon, that really beamed the sound intensely right at you...sometimes I liked this, and I was expecting some of that...these don't do that, I suspect because the ribbon is much smaller and operates at a higher frequency range.
- It can be hard to discern if the super tweeters are doing anything, sometimes! Again, could be good or bad. If I turn the super tweeters off, the speakers still sound good on their own. If I turn them on, still the same sound signature, but everything stepped up a notch! If I turn just one side on and the other side off, you get a fairly strong "pull" to the side that is on...this is how I can tell they are definitely doing "something." If you play the super tweeters on their own, you get faint "music" playing through them.
The comments above may seem like they are not worth it. I suppose that is debatable. I didn't find the improvement to be super-dramatic, as if changing speakers...but they did seem to IMPROVE the speakers, all-around...as much or moreso than changing an amplifier or preamp. So if you like your speakers now, you'll probably like them even a little more if you add the super tweeters. If you're looking for a vastly different sound, these aren't going to provide that, just improve what's already there.
I don't have golden ears and I have ZERO room treatments, and even some acoustic instruments in the room (adding resonance), so I may not even be hearing all they can do, but I DO definitely notice a difference/improvement throughout the speakers' frequency range. Somehow the super tweeters seem to improve the PRAT (pace, rhythm, and timing...not sure how this is possible) and add to the realism of the sound and add slightly more air. Cymbals definitely a bit more natural sounding as well.
Hope that helps! Interested to hear from others as well :)