Are you driving the audio past 100% ever? If you are, you are only distorting the signal before it hits the power amplifier. The more distortion that hits the voice coil and the spider, the more likely it is to be damaged by driving the amp and speaker hard. Class D amps should not be driven beyond 50% either as it only adds more and more distortion to the waveform produced at the speaker. Plug in an external for movie watching. If you are driving the amp at 100% and VLC volume at 200%, I wouldn't warrant you either. That's negligence. Good luck.