Nothing with meaningful bass is going to sound great in an 11x12 room - too small and nearly square, double trouble. I’d try to find something with limited bass output and a mellow top end. That will sound balanced without subwoofers, which you should skip in that space. Something like the Ref 3a de Capo might be a good call.
If you really want a planar.....You could try the MMG. Altho it’s not a perfect fit, at least it won’t dump a ton of very long wavelengths into your space and it sounds good as a stand alone speaker
If you really want a planar.....You could try the MMG. Altho it’s not a perfect fit, at least it won’t dump a ton of very long wavelengths into your space and it sounds good as a stand alone speaker