Altec Lansing AVS 500 Computer Speakers "bad subwoofer transformer" Questions

...bad subwoofer, bad ac/dc transformer - or what?? I don't even know if my sound card has anything to do with this. Please help if you can! Thank you very much! It sounds like the subwoofer speaker has ...

...subwoofer turns on fine (green light on back is on), however when I hook everything up and turn on the control center, everything immediately turns off. I go to check the fuse on the back of the sub, ...

...bad (in my case it was the one that drives the base so the popping sound was coming out the subwoofer).   The TDA2007a seems to be a faily common audio power amp IC.  The main problem with ...

...subwoofer. With a low volume, approximately 10%, the noise and the interference are quite annoying. These problems are normal in this model? Thanks! Sorry for my bad english :) there is nothing you ...