On Al's website, click on Crossovers / Overview. Click on the link following What's wrong with the stock Klipsch networks anyhow?
Then click on the "Here's what" link. The schematic is on the bottom of the page.
Mike
In reference to the stock network, i felt the bass was a bit sloppy, and almost struggling. I pulled these out of an old basment, I have one cabinet complete. Had to replace the woofer in the other cabinet (so its in pieces). Read a bit much on the different options, and enjoy building pieces into assemblies. Figured first step would be to upgrade the crossovers. Does alk sell kits fro the diy'er?