th 700

Hey y'all - newb question here. I have a TH 500 v1 amp and 2 Aguilar SL cabs (2x12 and 1x15). The amp has 2 Speakon jacks on the back, so no problem hooking up the cabs. Now I'm thinking about upgrading to a TH 700 v2 amp. I notice that the v2 amps only have one Speakon jack. How do I...