I hate to interject here, but a crossover 'upgrade' is just as likely to make the speakers sound worse, or do nothing at all, as it is to make them sound better. Replacing a few parts with larger versions of themselves in a crossover network is a shot in the dark, and no guarantee you'll improve upon something a reputable manufacturer like Klipsch already tuned in a lab. If I were you Jnorth1178, I'd go out and listen to as many systems as you can and get an idea of what kind of sound you like. Figure out if there is a specific place in your system you'd like to change and what you are hoping to achive, and then ask your question again, but be more specific. You'll get much better answers.
