Subwoofer connection

If both sets of RCA outputs run off the same volume knob, you should have no trouble.  (nice preamp!)

Just google "how to connect an active subwoofer into a Convergent audio preamp"  Long expanation and video.

That preamp has a toggle to choose output one or two. You will need a pair of  Y adapters from the preamp one outputs to the amp inputs and the sub inputs. You will need something like this  to run an active subwoofer!

Thank you all, captains, as you will see, if  everything else fails, ask and follow the captains suggestions. It’s what I’m going to do inmediately.

Yogiboy, perhaps I can use the second output that already exist in CAT, will be the same, but thanks again for the image. I’ve never seen this kind of connector