Loudspeaker system with improved sound

Abstract

A loudspeaker device (200) is presented which includes a zeolite material (100) comprising zeolite particles (102) having a silicon to aluminum mass ratio of at least 200. For an increased pore fraction of pores with a diameter in a range between 0.7 micrometer and 30 micrometer shows an increased shift of the resonance frequency down to lower frequencies has been observed.

1 . A loudspeaker device comprising:
 a loudspeaker;   a loudspeaker receptacle for receiving the loudspeaker, the loudspeaker receptacle having a resonance space; and   a zeolite material disposed within the resonance space, wherein the zeolite material comprises zeolite particles having a silicon to aluminum mass ratio of at least 200.   
     
     
         2 . A loudspeaker device according to  claim 1 , wherein at least part of the zeolite particles have the structure FER. 
     
     
         3 . A loudspeaker device according to  claim 1 , wherein at least part of the zeolite particles have the structure MFI. 
     
     
         4 . A loudspeaker device according to  claim 1 , wherein the zeolite material further comprises a binder adhering the individual zeolite particles together. 
     
     
         5 . A loudspeaker device according to  claim 4 ,
 wherein the zeolite particles comprise first pores having a diameter in a first diameter range; and   wherein the zeolite material comprises second pores between different zeolite particles.   
     
     
         6 . A loudspeaker device according to  claim 5 , wherein
 the second pores have a diameter in a second diameter range; and   the second diameter range is spaced from the first diameter range by at least one order of magnitude.   
     
     
         7 . A loudspeaker device according to  claim 5 , wherein the second pores have a pore diameter larger than 50 nanometer. 
     
     
         8 . A loudspeaker device according to  claim 5 , wherein the second pores have a pore diameter distribution with a local peak in a diameter range between 0.7 micrometer and 30 micrometer. 
     
     
         9 . A loudspeaker device according to  claim 4 , wherein the zeolite material further comprises grains having a plurality of the zeolite particles adhered together with the binder the grains having an average grain size in a range between 0.2 millimeter and 0.9 millimeter. 
     
     
         10 . A loudspeaker device according to  claim 4 , wherein in relation to the whole mass of the zeolite material the mass fraction of the binder is in the range from 1% to 20%. 
     
     
         11 . A loudspeaker device according to  claim 1 , wherein the zeolite particles have a mean diameter below 10 micrometer. 
     
     
         12 . A loudspeaker device according to  claim 1 , wherein the zeolite particles have a mean diameter above 0.1 micrometer. 
     
     
         13 . A zeolite material obtainable by:
 preparing a zeolite suspension from zeolite particles having a silicon to aluminum mass ratio of at least 200 and a solvent that includes an organic solvent;   mixing the zeolite suspension with a binder suspension to obtain a zeolite-binder mixture;   drying the zeolite-binder mixture.   
     
     
         14 . A method of producing a zeolite material for use as a sorber material in a loudspeaker device, the method comprising:
 preparing a zeolite suspension from zeolite particles having a silicon to aluminum mass ratio of at least 200 and an nonpolar solvent;   mixing the zeolite suspension with a binder suspension to obtain a zeolite-binder mixture;   drying the zeolite-binder mixture.   
     
     
         15 . (canceled)