Mojo you should consider another 2 or 4 ep500. I’ve been reading / watching videos about subwoofer line arrays. REL is the obvious name that comes up with sub line array but I don’t see why ep500 couldn’t be used. The sub array is an interesting concept in a 2 channel setup.

Plus I know you like stacking things that are axiom.

M60ti Hafler9505 & JFET Pre,Axiom Transformer. M3 Marantz PM7200 Dual 606 Denon 2700 M2 Yammy RX595