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Computer speakers DC offset?

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#1 Matt714


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Posted 19 March 2015 - 08:55 PM

A few days ago, I accidentally damaged one of the speakers of an audio system (Edifier S730), most probably because of a loud and high-pitched distortion (noise?) that happened when the system was connected or disconnected from my computer while turned on. 
The sound is difficult to describe, but one knowledgeable person I asked replied that it was a full volume DC offset spike. Is this the actual technical term? If so (or not) is there a way to prevent it in the future (besides being really, really, careful?)  Electrical problem? The set was directly connected to a wall socket. However, the other is full of power bars connected to a computer, two routers, three monitors, and an external HDD. 

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