Any thoughts on this amplifier setup to go with my DCX2496?

Also recently I've been having a hum issue with the Behringer which is feeding my Logans (biamp) and my subs. The sound only comes through the sub channels. I'm not quite sure if it's the XLR cable's at this point, the connectors or internal in the processor on those channels. Anyone ever come across this?

I've been looking at other digital crossovers but I can't cost justify the expense of the DEQx yet. Though it looks lovely in black