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well there are kind of 4 but the main one is sound energy.

But there is also kinetic as the speakers move,there is heat energy as the plug would get hot and there is light energy as of the lights on the speaker!!!

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12y ago
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Wiki User

16y ago

input is eLeCtRiCaL eNeRgY

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Wiki User

12y ago

sound energy

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Anonymous

Lvl 1
4y ago

When electricity runs through

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Q: What are the input and useful output and waste forms of energy from a stereo?
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