Hello, Yesterday I realized that when I am playing my mp3 player through my stereo system via a mini headphone jack to stereo rca connectors that the subwoofer does not fire. I have my reciever set the lfe crossover at 100hz and i am playing mp3's I've encoded at 192k. I also tried other mp3 files i did not encode and still no sub. On any other device, sub works fine. Is there a reason for this? I am using an Iriver H120 MP3 player. Thanks
Greg