I'm sure my family room falls into the "brown poopy room acoustics" category (carpeted, leather furniture, curtain covered 8'x10' sliding glass door, and a 12' cathedral ceiling)
Keep in mind that the current speakers (fronts and sides) are smallish bookshelves and not even close to full range. I have them running now at 6 ohms, small, and upped the sub x-over to 100Hz from 80Hz. The sounds "seems" a bit fuller but I don't know if that's just me being hopeful. No one else in the family has noticed anything but then they were happy with the tv speakers
The bass sounds ok, not localized, and the dialog doesn't have any noticeable change at all. Of course there's a large gap between the lower freq response of the speakers (if they can even get that low reliably) and setting the sub at 100Hz as opposed to 80Hz so any perceptible difference is probably my imagination. However, this is a really good learning experience. I haven't checked the receiver yet to see if I can change the x-over on the speakers to match the sub so maybe that's another way to squeeze a little more performance out them.
San Jose says hi to the BeeMan! btw, you don't happen to care for bees do you?