I have an ev full ranger 12's as well in what was almost a copy of a Heresy II sized cabinet. The guy that sold em to me at a yard sale swore up and down they were heresy's. I knew they weren't but @ $15 the pair, it was no time to "educate" him It was time to load up and run.
The weird thing about the cabs (and I am not sure if EV intended it that way) is that they are sealed, with a guillotine style back. One of them was so tight, I could not open it till I holesawed a hole in it to install the connector, and put a dowel at an angle and knocked it out. However the speakers have a switch in the back panel for tweeter sensitivity.
I'd guess they will work in almost any cabinet, vented to sealed like mine to open baffle.
Cool.
Srinath.