Hey , I have a question, please help. Yesterday evening all was working good. My subwoofer from 6.1 center is only working on low volume. All cables are ok. When I turn on the subwoofer, I am hearing that little bass, so i think it is not broken. I think it is not because of pc, because when I connect it to my mobile phone ( I am connecting it to pc and phone via aux ) , it also is not working, only on low volume. Please help!