I really can't really remember as there was so much to look at in the factory & my memory is not what it used to be. I believe that it was a small floor-stander with a passive 8" EP400 driver - Ian pointed that feature out. Only Axiom knows, ha!!
With the way that one EP400 performs in my room, two could be over the top, but so accurate, gain adjustable & IMHO, very versatile. The cabinet would definitely be fatter & perhaps not as pleasing to the eye unless it was tapered. I'm not an expert on speaker design, but this is my fantasy based on my experience with my M2s + EP400.
Maybe I should just purchase another EP400 & get the best of both worlds - but I really don't need anymore bass output in my audio system.