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The sound when sent out of the speaker (big or small) hits the walls of the paper cone causing this sound to keep hitting the walls time after time makes the sound hit its self and there for makes a larger volume and is really nice to here rather than getting expensive speakers.

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15y ago
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15y ago

Sound is not amplified in a cone. In fact, sound is not "amplified" any way that does not add energy, i.e., an electronic amplifier. Even then, though, a cone is used (loudspeaker.) Why?

The cone is an "impedance matcher". Energy is lost at impedance mismatches. The impedance at the end of a small tube (musical instrument bore, or your mouth, for instance) couples poorly to the air. Adding a cone matches the impedance the the tube-end (at the small end of the cone) to the air (at the large end), and more efficiently couples the sound to the air, allowing the sound to retain energy better, and thus sound louder or travel farther before dissipating.

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Q: How does a paper cone amplify sound?
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