MWilliams -- Thanks for the clarifications. Yes, dull cymbals would seem to suggest simply weakness in the mid to upper treble. My feeling, though, contrary to some of what has been suggested, is that enhancing that part of the spectrum by enhancing first reflections would be compensating for one problem by introducing another. With the likely result of unwanted side-effects on imaging and other parts of the spectrum.
All I can suggest, if you haven't already done so, would be to take one of your better quality recordings containing cymbal crashes, and play it at realistic "live" volume levels, with the tweeters of the speakers aimed directly at you. If there is still significant dullness, then I would have to think something else is wrong somewhere, although I'm not sure what that might be.
Good luck!
-- Al
All I can suggest, if you haven't already done so, would be to take one of your better quality recordings containing cymbal crashes, and play it at realistic "live" volume levels, with the tweeters of the speakers aimed directly at you. If there is still significant dullness, then I would have to think something else is wrong somewhere, although I'm not sure what that might be.
Good luck!
-- Al