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Is this a heat engine? Feels like it has to be obeying the laws of thermodynamics and something has to get hot managing the pressure wave density in air. I'm guessing the speaker magnets and coils heat up.

Play enough noise, and the system will explode into fire...




I think you get destructive interference in some places (the ears hopefully) and constructive interference in other places (hopefully not the ears). So you’re moving energy rather than destroying it


Audio is basically negligible in terms of power.

Those massive stacks of speakers at an arena rock show are (in total) perhaps 20kW. The lights use far more.

Earbuds can we well south of one watt.




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