how big a speaker can you put in an 11 x 11 room?

The other posters are way too polite - big speakers sound like shit in too-small rooms. I will, however, add that there is a big difference between Salon 2's and the other speakers you mentioned. Salons have prodigious bass capabilities - while they do not have the spl limits and extension in the bass of the physically larger originals Salons (I owned that speaker for three years), they still have bass that few speakers can equal. The Cremonas and Reference 3A Grand Veenas, on the other hand, are more in the nature of midsize speakers, but with dual woofers, so again, they will be a lot for a room of that size.

More importantly, you have a square room - you want a speaker with adjustable bass or monitors with a subwoofer.

Raquel is right on the mark. Yes you would be nuts to put the Revel Salons or any full range speaker in that room without any bass adjustability. Another thing to consider is that you would have to sit in the nearfield. On speakers with that many drivers you need to sit farther away so the drivers can integrate properly. I guess you could use some form of room eq to tame the bass, but unless they sound good in the nearfield it still wouldn't work.

My floor standing omni OHMS, which have the better and more extended low end, in my 12X12 rooms do not have bass issues.

My Dynaudio monitors tend to be more sensitive in that area.

It seems to be less of an issue with the Walsh design from my experience.

01-29-09: Raquel
The other posters are way too polite - big speakers sound like shit in too-small rooms.

I guess the post I've written earlier isn't too polite either? :-

01-27-09: Ryder
A large speaker in a small room often sounds like crap most of the time.

this is why i love ag....good honest opinion (and fairly price highend audio/folks to buy stuff I dont use)...many sales people have been recommending many big speakers for this room. I have been an easy target as it's the only room in the house i can use a floorstander. I actually have a 20x20 room with 15 ft ceiling...but due to the built-ins in the room..and my wife..i cant use floorstanders so i have a pair peakconsult princess (just the monitor) with a REL sub which i love...so i was hoping that i could upgrade my virgos to a more lifelike, thicker sounding floorstander..obviously i have no intention of buying a speaker that will not perform well in this space..thanks for the advice....