@3db Does the builder build a back box behind the in-ceiling speakers? Is your wife letting you keep the Rhythmik sub in the chain? If not, RBH also makes in-wall and in-floor subwoofers; and HTD has in-wall subs as well. Or Beale Street Audio sells in-ceiling subs if you prefer. As long as your builder is already hacking apart the ceiling, it might be a good time to consider such options.