Is there a way to hook tmy HS50s up with this? AxionTech.com-Best Value Computer Parts Hardware Software Laptop Servers Dallas Texashe back of the sub looks like this. http://i44.tinypic.com/2u8frja.jpg I realize this is probably not possible but I'm trying to save myself from buying another sub. (already have 3... all for computer setups though) This will be plugging into an M-Audio Fast track which has the RCA inputs on the back. What do you guys think?