I have a RF prime 600r 5 ch amp that I am wanting to install with 2 infinity kappas in front and two infinity reference in rear doors and probox with two Memphis 12" 4 ohm subs. Any way to do this with this amp? Headunit has front and rear RCA outputs and one sub output. Any help would be greatly appreciated. The subs are wired down to 2 ohm. I'm new to this forum and also posted this in 3rd gen but should have posted here?