I pulled one out, they are marked EP600 woofers. The AMP looks identical to my EP500, probably need to pull that out and look too as now I'm doubting it all. It has dedicated rca in and outs, which the 800 v3 or v4 isn't supposed to have as they use an adapter via the xlr.

So I never got an EP800, I got Frankenstein? Someone at Axiom drunk smile?
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2xAA
M80/VP150/VP160/QS8
4xM3/M22OW/M2OW/VP150OW/4xM3IC/4xM3OW
EP500/800/HSU VTF3/SVS PB2k/SB2k/SB-12