LOUDSPEAKER SYSTEM WITH IMPROVED SOUND
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)