I got Al's ALK crossover for the Khorns which sounds better. I have never heard of the Crites crossover. Is that better than ALK?
"Better" is entirely relative to who's making the call. I can't speak for the Khorns, as I have only had LaScalas. The Crites crossovers are supposed to duplicate the best of PWK's original vintage crossovers, but using modern ("better") parts. The sound will be more akin to the stock crossover, and what PWK designed. ALK's crossovers alter the original design and the resulting balance, curves, slopes, etc., significantly so the sound is quite different from stock. On my LaScalas in a smaller space I actually preferred the stock AA crosovers. In a much larger space the laser focus of the ALK's won me over, and didn't sound as hardened as they had in my home. My advice would be to try them each out if you can, and or seek more input from those who have direct experience. My friend who has done the mods with the Wood horns has used both as well as stock. He hates the ALK's, and much prefers the Crites. With the Scalas the ALK's are less forgiving, more focused and detail, and can have a harder edge than the stock AA's. The AA's are a bit softer, and easier on the ears in a smaller space. The ALK's also have provisions for selectively changing the attenuation on the mid-horn. The Crites do not have that provision as I understand. I have fooled around with that and it does alter the sound, but I found myself coming back to what was essentially slightly up from stock. YMMV depending largely on your setup and your expectations.
I think I still have pictures of my friend's installation of his wood horns. If you ping me off the thread I'd be happy to forward them so you can get some idea as to what is involved in doing such a modification. On my LaScalas, changing the tweeter made a huge difference (improvement), so I'm betting that's a good bet for you as well with your Khorns.
Good luck.
Marco
