This is a powerful sub that is not magnetically shielded, if I recall correctly. Would this not be a possibility? I had to move mine away from my CRT rear projection because I could see the picture kind of moving/distorting during heavy beats and effects.
It cured it when I moved it over into the corner but left it plugged into the same outlet. I still couldn't win. I then thought my IR Blaster was broken for my remote as button presses were not working. When I went to check the blaster, the red signal light was flashing like crazy and got brighter with sub beats. Looked cool but not so functional. I had to move it two shelves up on my equipment rack.
Of course, it could probably be all or any of these things perhaps.
With great power comes Awesome irresponsibility.