Zeal:
Try this... Disconnect one speaker from the amp - either speaker - (turn amp off and remove one set of speaker cables from the amp).
Fire the amp back up and position your ears below the "firing path" of the tweeter (literally get up and move around in the near vicinity of your listening point - squatting low at various heights just below the tweeter's "path."). With the S2's, I found that the brightness (glare) became worse below the tweeter and the treble actually became sweeter just above the tweeter. See what you think.
Next, position yourself at different points to the side ("inside" side) of the tweeter and locate where it sounds the sweetest. With the S2's the treble became less pronounced when my ears where slightly to the side of the tweeter.
In my case, I remedied the annoying glare by raking the speakers forward to the point that the tweeters fired slightly below my ears at the listening position (chair) - and slightly to the outside of the "direct pathway" to each ear (with the axis somewhere very close to, or immediately behind the listening position.
I also have to rake the S-1's forward, where at the right point the treble sounds excellent. Do keep in mind that these speakers are more planer-like in their ability to retrieve detailed treble - to the point that anyone who enjoys a speaker voiced on the warm side or rolled off at a noticeable upper frequency range, likely will not like the presentation of the EX series (which in my opinion, is pretty darn flat. Certainly the flattest I've owned - i.e.: excellent balance).
Let us know if you get the treble tamed.
_Ben
