My subwoofer in my PDR-12 is gone. Have had it more many years. I tried to get the face off it to replace speaker but could not get it to come apart. I was looking at the Polk Audio PSW505 and had a lot of good reviews so I thought I would try it. First I had to put a wire back on the woofer that had come off. I am not very happy with it. Think I need to go back and fix the paradigm. Any idea how to remove speaker?