Quad ESL 63 in smallish room ?

for a similarly transparent sound with much better dynamics and bass with no beaming try the carolina audio jtm's. I longed for some quads till I heard these... they work great in every room I have heard them in for 12 by 13 to 24 by 30.

Well, 11.5 ft isn't too much but it could work. They can be placed close the side walls without creating destructive lst reflections. You don't specify how long your room is so I can't comment about the "5'out" set up, but it does sound as if your listening position may be too distant for good soundstaging. Have you treated the backwall reflections? Are the speakers on stands or on the floor. What are your sonic priorities? What about your present sound do you dislike? Give us more info - maybe someone here can help.

No problem.
"Beaming" is not a bad thing with Quads! All electrostats do that, due to the nature of the drivers.
Like Newbee touched-upon, Quads don't spray "highs" all over the place like a tweeter, so they can be placed next to a side wall.
In fact, 11 feet may probably be too far apart, depending on your listening distance and toe-in. (the five feet from the front wall is a good thing) They're certainly easier to deal-with in a limited width room than other types of speakers.

I used to have a pair of 63's in a roughly 12 by 12 foot room, and I've also used them in a 13 by 31 foot room. Of course they liked the big room better, but were still quite enjoyable in the small room (though I had to pay a lot of attention to addressing early reflections).

If you have five feet available behind the speakers, then chances are you'll have very good depth of soundstage (assuming you can diffuse the backwave - I use fake ficus trees). Despite their directionality I think you'll still want to treat the first sidewall reflection zones, as that will reduce your awareness of the walls' presence. Once again, I prefer diffusion over absorption, unless your room is overbright. And even then, be careful not to overdo the absorption - a little goes a long ways in a small room.

Having the speakers a good 5 feet or so out in the room is also good for the bass; with a dipole, the bass is reduced by proximity to the "front" wall because it's the out-of-phase backwave that's being reinforced. If you need to improve the bass, move your listening position closer to the "back" wall (the one behind your chair). Bass traps in the corners behind the Quads can also increase the bass because they're primarily absorbing the out-of-phase backwave.

Best wishes,

Duke