Loudspeaker structure

#The present patent application for industrial invention relates to a structure of membrane loudspeaker, in particular for controlling the vibration modes of the loudspeaker membrane.

#Various types of membrane loudspeakers are known. This type of loudspeakers have problems related with the vibrations of the membrane, especially at medium and high frequencies, which impair the quality of the sound emitted by the loudspeaker.

#In the prior art the problems related with the vibrations of the membrane are solved by adding masses in various points of the membrane.

#Additional features of the invention will appear evident from the detailed description below, which refers to merely illustrative, not limiting embodiments, wherein:

#FIG. 1 is an axial sectional view of a first embodiment of a loudspeaker structure according to the invention;

#FIG. 2 is a chart that shows the sound pressure level (SPL) according to the frequency in a FEA (Finite Element Analysis) simulation performed on a loudspeaker without vibrating element, wherein a virtual microphone is disposed along the axis of the loudspeaker, at a distance of 1 meter from the loudspeaker;

#With reference to the Figures, the loudspeaker of the invention is disclosed, which is generally indicated with reference numeral (100).

#With reference to FIG. 1, a loudspeaker (100) comprises a magnetic assembly (M) wherein an air gap (T) is generated.

#A voice coil (1) is mounted on a cylindrical support (10) and is disposed with possibility of axial movement in the air gap (T) of the magnetic assembly. The voice coil (1) shown in the drawing has only one winding, but can have multiple windings. A basket (2) is fixed to the magnetic assembly (M).