system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why is wider speakers required for deeper sounds?
gpt
The deeper a sound is, the longer its wavelength. The longer the wavelength, the more the energy in the wave is damped (which means to reduce, like the way a shock absorber on a car smooths out the bumps in the road).

This means deeper sounds require more energy which means you have to move more air, to move more air you need a larger cone. 


This is also why you can get nice full sounding deep tones from headphones with very small drivers but if you want to hear it across a room you need much larger drivers. In you ear the sound only has to travel a very short distance so there isn't much air in the way to dampen the waves. But traveling across the room there is a lot of air in the way so the damping effect is much bigger.

This is also why PA systems at large concerts have very large speakers just for the low frequency sounds (subwoofers). A typical concert PA system will have subwoofers with a pair of drivers that are 18" or larger, and there will be between 4 and 36+ of these boxes depending on the size of the venue.