I am in the exact same boat that you are in. I had to sell my Montior Audio silver 5i's and 10i center. I checked around the web at various OEM sites and found the RBH
C-770 SE models ($575.00 each). I got on the phone with one of their tech guys and found out that they are designed to go in bulit in cabinets. As explained to me they employed a different crossover set up to compensate for the accoustic factors that come into play when putting a speaker in an enclosed cabinet.
I found a dealer here in Oklahoma that had these set up in a big wall unit, and was very pleased with the sound. I went with three for the LCR and will be using triad silver di poles for the rears mounted in the ceiling.
I found a resource that does HT design over at the AVS forum. The guy's name is Dennis Erskine, and he seems to be well regarded in the HT desgin circle. On the pone he told me that my Monitors would sound "off" if placed in a cabinet and suggested Triad's or a speaker that was designed for use in a cabinet. The triads are pretty pricey, and that is what lead me to the RBH's.
If you wanted to use the RBH's all the way around, they make a flush in wall cousin of the C-770SE, the C-760SE, that would make a pretty nice rig for around 2400.00.
You may want to consider some sort of accoustic treatment around the speakers once they are in the cabinet. If you want, email me and I'll send you some info on what a couple of accoustic desgin shops are suggesting. It's pretty inexspensive, and they swear that this will help to maximize results for the cabinet based RBH's.
Good luck,
Rabmen
