Invention Grant
US09351066B2 Expandable speaker 有权
可扩展扬声器

Expandable speaker
Abstract:
A speaker apparatus or system with a user selectably expandable chamber is provided. The chamber in its expanded state enhances the speaker's acoustical properties. The chamber in its collapsed (in physical dimension or shape) state provides a thin profile for increased portability or low profile mounted solutions. The speaker is compatible with current electronics.
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