So now I have a Y connector going out from the right RCA pre-out (one going to the amp and the other to the sub.)
Seems to sound OK. Is this the way to do it? Is this imbalance going to cause any problems for the amp/pre-amp? Should I get another Y connector to hook it up to the left one to the sub also?
(Edit - never mind. I got my answer on another thread. Going the double Y connector route.)