You're the man! Standing by for updates.
I guess technically it would be more accurate to say that I HAVE made some updates to the crossover and wiring already (again, with Clayton's guidance). The parts all came in a few days ago & I cobbled together a 'basic' upgrade. I'll listen to it for a while and then continue to fine-tune it based on what I hear.
In fact, I'll probably start a new thread so I can go over everything, in detail.