Check out the ProAc Response 1.5s. They will play down to the low 30s when set up properly. They do like a bit of room to the rear, but have the tweeter mounted to the inside of the speaker front to help eliminate side wall reflections.
I would also suggest that you go to Audio Physic's website and read their 5-page instructions on speaker placement. It is based on physics and psychoacoustics. Carefully following their directions, I had my ProAc's sounding the best they ever have (MY placement prior to using AP's was only off by about 10% ;) )