I just emailed Axiom. As for mounting being a "problem".... Almost everything else in this HT is a problem, too, so I almost expect it! Or, can stick with the Sonance for a couple thousand more and have a more "proper" installation. I'm sure I'll be happy with whatever I end up doing. But I am impressed with everything I read about Axiom. I'm 99% set on ordering and EP600 and EP500, and if I could get the other 7 speakers from Axiom, it would almost be like getting the EP600 for free!