Why speakers have multiple drivers but most headphones don't
BGR says larger and multiple drivers require more power, and using them in headphones would mean needing better battery life and a bulkier headset.
TLDR
BGR describes power and portability trade-offs behind the difference between speaker and headphone designs. Larger and multiple drivers have higher power requirements, it says; accommodating them in headphones would require better battery life and a bulkier design.
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