Headphone and hands-free loudspeaker

Headphone and hands-free loudspeaker

  • CN 1,805,613 A
  • Filed: 12/29/2005
  • Published: 07/19/2006
  • Est. Priority Date: 12/29/2005
  • Status: Active Application
First Claim
Patent Images

1. , a kind of Headphone and hands-free loudspeaker is made up of vibrating membrane, vibrating membrane fixed support, ferromagnetism alloy permanent magnet, hollow magnetic core and three magnetic poles and three voice coil loudspeaker voice coils.

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