Another Polkie and myself were having a discussion about adding a 2nd subwoofer. I have my 2nd one on the way and will be here thurs. The question that came up, because we have to use a y-splitter to hook up a 2nd sub, will it take away from both subs. I know the subwoofer hook up is a pre-out, so I am guessing it would have some voltage like car headunits preouts. So would hooking up 2 with a y splitter take away from the performance of both because of that? Looking foward to your replies.