Hi! Im thinking about trying polk audios suggestion on connecting a sub to front L&R instead of the subwoffer output, and setting speaker size on large, tough my speakers really is satelites. MY QUESTION: I only have a Y cable, fron 1 connector(sub output) to the L&R line-input on the sub. Can i just put the one connection on L only, on the pre-amp front output? or do i have to get a new cable?