Thanks for the reply.
I am new to all this so I am assuming by a sub crawl you are talking about moving it all around the room and seeing where it sounds best?
I emailed paradigm and they told me it was ok to use a Y adapter on it.
I tried it and noticed a slight gain, but not much.
I played the bank scene in Matrix and you cant really feel the bass unless I turn the gain way up on the sub itself. I also set it up according to the yamaha and paradigm instructions.
I think I might have to consider taking this sub back.