Magnepan 1.7s in a 10x13' dedicated room?

I wouldn't do it. You are asking for trouble in that room. They might sound decent, but you would probably only get 50-60% of what they are capable of. I would stick to smaller speakers.

Shakey

I agree with Shakeydeal - I wouldn't use a pair of Maggies in a room of that size. I have tried other dipole speakers (Apogees) in a small room and it always ends up in a frustrating disaster.

There are several other speakers that will work quite well in a room of that size and are probably easier to drive as well. Audio Note or vintage Snell E, J or Ks will work well. There are several stand mount monitor speakers that are specifically designed for smaller rooms. Someone recently mentioned the Larsen speakers from Sweden in another post. These look very interesting; small, full range floor standers that are designed to be placed directly against the wall.

If you prefer the sound of Maggies go for it. I'll bet they would still sound very good even in your smaller size room. If you are not 100% soid on the Maggie sound then go with the above two suggestions.