The best speaker for a small room...at any price point.

I heard the Gamut's under less than ideal show conditions last year at the Capital Audio Fest, and thought they were fabulous.  For me, best stand-mount sound at the show.  That being said, I seem to remember that there was some pretty impressive equipment upstream from them.

I love my Harbeth C7es3.  They sound fantastic in my small living room! 

Me too love harbeth M30.1 in 10x11 room.
try to look something different with better bass .

Size of room is one thing, but how close are you sitting to the speakers? How far are the speakers from the wall behind them? Ported speakers don’t perform well in small rooms, so you might want to try plugging the ports if equipped and plugging is supported. I’d recommend near field monitors. Yamaha makes very nice near field monitors - HS5 and HS8 with an available active subwoofer with crossover. 

I have a pair of Charney Audio Companion Voxativ AF 2.6  in my 11x15x8 room. They will play very well in the 11x13 room your considering. Charney offers 3 different looks for the Companion and many different drivers to suit your taste, budget, and gear. Don't let the small size fool you these are serious speakers that deliver it all especially deep clean multi note bass. Do a search there are a few very positive comments from owners and show attendees around the web.

http://charneyaudio.com/