I gave a call to B&W technical support and they did not laugh when I told them my plan so at least that much is encouraging. I have a cabinet shop quoting on the entertainment center. The biggest problem I see is that B&W says the in-walls are designed to work with a 1'000 to 2'500 cubic inch enclosure size (and they recommended adding some fiberglass or rock wool to help dampen a bit). So far all my cabinet designes have much larger volumes (10'000 cubic inch (24"wide X 18" high X 18" deep approx). Does anybody know what effect it will have? I can have a rear baffle built built in to cut the volume if needed, but I'd like to know if it's needed before I go to the trouble.