Greetings all, I just got a new XR50 and no matter what I do, I can't get to hear anything from the subwoofer. It's a panasonic sub (part of a whole older Panasonic system that came with 5 DVD changer and a receiver built in, along with 6 speakers). No matter which sub connector I am using (there are two) it doesn't work. Any one has an idea...experience with this? Thank you.