system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why do headphones have lower frequency responses than speakers?
gpt
Small drivers, like those in your headphones can reproduce low frequencies but they can't do it with enough power to be heard at any real distance. 

Typical home speakers overcome this issue by using large drivers just for the low frequencies and using a cross-over circuit that routes more power to those drivers. 

The lower the frequency the more power and larger driver you need. In a set of speakers this requires more materials and engineering to accomplish. While great sounding low frequency response can be achieved, most consumers choose a less expensive system.

It's much easier to engineer headphones that can accomplish the same thing because the drivers are so close to your ears.