Klipsch could be a whole lot better, a whole lot. To say that they are ’crisp’ is an understatement. Klipsch uses very mediocre drivers. Crisp is a good way to describe that tweeter.....Lol. I wonder if anyone who likes Klipsch has ever heard a great compression driver? Most likely not. This is not an insult, simply an invitation to remain open minded. Upgrading the components that create the sound, is the key to making them a truly good speaker. But, those that really love Klipsch think that is sacrilege.
Simon Mears does exactly that, turn the Belle Klipsch into a much better speaker:
http://simonmearsaudio.com/uccello-horn-loudspeakers.html
Everything about them has been bettered; the cabinets (both frame and finish), cross-overs, cables, binding posts, drivers and horns. Not least: the implementation of all parts, and the care that went into making these speakers. The driver of the bass horn (and the folded bass horn itself) is the one that most closely resembles its origin (i.e.: the pre '85 K33E square magnet unit).
Perhaps you could say Mr. Mears of the UK does with the Uccello’s from the Belle what Greg Roberts does with the Volti Audio Vittora’s in the US of the La Scala’s. Haven’t heard the latter, but I own the former, and they are truly wonderful speakers.