Steve, I've only installed the no-rez in the lower section so far.
My cabinets used early prototype braces so there were a couple issues that have been fixed for the production runs (braces now have 2 larger holes, one on each side for wiring). I only had 1 small hole in the corner to pass the wiring through, it was not adaquate. The spacing of the braces makes it pretty much impossible to drill an additional holes at this point so I had to run the woofer and mid woofer leads through the large brace cutouts. I did drill a second hole in the top brace so was able to pass the tweeter and mid woofer wiring through those .
Once the inside wall at the top is covered in no rez, the wiring will all but disappear aside form the leads running across to the terminals.
The included cross over boards fit perfect between the no rez, they can be secured with just one or two screws, the no rez keeps them in place and they are sitting on small rubber feet.
Guy, these are being driven by a Dodd/Richie protype amp, abouit 8 extremely linear wpc (4 ch) with a Dodd variable gain pre (both battery)