Check out the Philarmonic 2. The port is on the top of the lower cabinet so they can be placed right up against the wall and it will still give some room for the OB mid to breathe.
http://philharmonicaudio.com/philharmonic2.html
The Salk Soundtowers can be placed as close a 1' to the wall
http://philharmonicaudio.com/philharmonic2.html
The Salk Soundtowers can be placed as close a 1' to the wall