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Miniature speaker device and television set










Image Number 10 for United States Patent #8130998.

A miniature speaker device includes a housing, a speaker mounted on the housing, a passive radiator mounted on the housing and vibrating in resonance with vibration of the speaker and having no driving system and a low frequency range amplification circuit for amplifying sound pressure in frequency components of a low frequency range of a single audio signal input in the speaker.








 
 
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