You may not want to "bang together" some quick boxes for your Theatre Four Pi's, especially if they aren't pretty. If your wife is at all like mine, once an image gets into her mind there's no changing it... seeing some big coffins in the livingroom might make her resistant to ANY future creations you want to put there, regardless of what they look like. Trust me, I know... I've tried it with some big black subwoofer boxes I built a few years ago. They now reside in my basement home-theatre room, banished forever from the livingroom. I just hope I can make the Premium Stage Four Pi's pretty enough to allow acceptance in the livingroom. She really doesn't know yet at this point what I'm building. I figure some nice cherry veneer with solid cherry or oak end-caps should help. And they won't be 9 cubic feet each either, just approximately 4.5 cubic feet each (and that's still pretty big compared to the Mission 731's they are replacing).

Merry Christmas,
Colin

P.S. - What am I doing participating in a forum like this at 3am? Well, an on-call network analyst never sleeps!!