Does anyone know if Michael Farnsworth, founder of Talon Audio, is still around?

I suggest you take the crossover out of the box and build a separate box for the crossover to eliminate vibration.
Upgrade the main wiring from the crossover to all drivers and use larger gauges than what is currently there.  
Reinforce the box to whatever extent is possible. The front face ideally will be “like a rock” - solid and inert. 
You be dancing with the delightful improvements from these upgrades. 
Good luck on this exciting journey and feel free to ask questions :) Pete

@ptss
The one thing I don’t need to do is reinforce the box. These things are, if anything, over-engineered to a ridiculous degree. I damned near killed myself just getting the speakers down two flights of stairs and into the home theater :)

I’ll definitely be redoing the internal wiring. I just need to do it without breaking the bank. Any recommendations on wire are appreciated. @millercarbon put in a vote for Synergistic Research, and I’ve also had great luck in the past with Analysis Plus.

Cardas sells some excellent wire and may even provide some advice. They also gave great solder.  

Terry

I couldn't agree more. The Khorus Does do A Lot right.
I absolutely love mine, and they are the original first generation.
They sing !

Cheers!

Anybody know how I can contact Michael. I have a very early pair of Khorus speakers from the 1990s and would like to discuss them with him.