Speakers "Too Big" for room

I think you will most likely be just fine!  I have friends with smaller rooms and bigger speakers and it sounds great.  Be bold!  And enjoy your system!

The design of the speakers can make a big difference.  Sealed vs rear ported vs front ported.  Some will tolerate being closer to room boundaries than others.  Different speakers need varying amount of space to work.  Good luck and have fun.

I think the speaker design and (to an extent) amplifier design would play a bigger role than the physical size of the speaker itself. At least from a sonic perspective. Aesthetically, huge speakers in a smaller room might look out of place but the size alone won't dictate whether or not the SQ is what you are expecting. 

I'm not as technical as most of you guys but I agree with Mapman. My L.R. is about 16'X14' and would love to have a pair of JBL L-300's or 4333's but it just doesn't seem like the room's big enough for them. So I have JBL L-100T's with updated crossovers and the smaller speakers sound great in this size room.

So, I moved them in. So far, to my tin ear, everything sounds OK. I’ve not really stress tested anything yet so...time will tell.

I even have the KEF KC62 sub going. This is a VERY cool product and perfect for a small room matched with LS50.