Hey everyone, Im new to this forum and wondering if you could help me. I have the pioneer receiver vsx818v and I am wondering what settings in need to put on to have my subwoofer work. I just have two mtx speakers connected A and B jacks on the back, and have a subwoofer plugged into the pre-subwoofer out jack, but nothing comes out of my subwoofer, but sound works fine out of my mtx speakers. Any help will be much appreciated.