Sandwich speaker cabinet

Abstract

A sandwich speaker cabinet, which has an outer cabinet, an inner cabinet mounted inside the outer cabinet, and a flexible shock-absorbing filler layer sandwiched in between the outer cabinet and the inner cabinet to join the outer cabinet and the inner cabinet and to absorb shocks during operation of the speaker system so as to reduce distortion and vibrating noise created by the resonance of the speaker system. The ultimate purpose of this sandwich speaker cabinet is to reduce the distortion and vibrating noise created by the resonance of the cabinet when the speaker drivers are doing piston motion.

1 . A sandwich speaker cabinet comprising:
 an outer cabinet, said outer cabinet being made of a hard material and having an opening at a front side thereof;   an inner cabinet received inside said outer cabinet, said inner cabinet being made of a hard material and having an opening at a front side thereof corresponding to the opening of said outer cabinet; and   a flexible intermediate shock-absorbing filler layer filled in said outer cabinet around said inner cabinet to join said outer cabinet and said inner cabinet and to absorb shocks, thereby reducing the distortion and vibrating noise created by the resonance of the cabinet when the speaker drivers are doing piston motion.   
   
   
       2 . The sandwich speaker cabinet as claimed in  claim 1 , wherein said inner cabinet has reinforcing ribs provided at an inside wall thereof to reinforce the structural strength of said inner cabinet. 
   
   
       3 . The sandwich speaker cabinet as claimed in  claim 1 , wherein said outer cabinet and said inner cabinet are made of one of the materials including hard plastics, wood and metal. 
   
   
       4 . The sandwich speaker cabinet as claimed in  claim 1 , wherein said flexible intermediate shock-absorbing filler layer is made out of one of the materials including rubber, silicon rubber, polyvinyl chloride foam and polyurethane form.