A method of forming an enclosure for an audio speaker including forming a rigid inner shell for the enclosure, the inner shell being in a single piece and configured to accept the speaker; and forming an outer shell for the enclosure, the outer shell having an inner surface bounded by the rigid inner shell, the outer shell being in a single piece monocoque construction which includes all the load bearing structures of the enclosure.

An insert of a die for molding a speaker grille includes a forming portion. The forming portion defines a forming surface, from which a plurality of pins extend for forming apertures in a speaker grille. The forming surface defines a plurality of apertures disposed at spaced locations between the pins. The apertures are interconnected with a plurality vent channels interconnecting the apertures with the vent channels for venting air disposed in a die when melted polymer used to form the speaker grille is injected into a die cavity defined by the die. The forming member and the vent channels are formed as a monolithic construction.

The invention discloses a manufacturing method of a speaker vibrating diaphragm by controlling a ratio of fiber materials, the method comprising the steps of: (A) fabric provision: providing a fabric interwoven by a plurality of warps and a plurality of wefts; (B) impregnation: impregnating the fabric in a resin solution; (C) drying: drying the fabric impregnated with resin solution; (D) formation: pressing the dried resin-impregnating fabric to form a predetermined shape; and (E) cutting: cutting the formed speaker vibrating diaphragm from the fabric. Each of the plurality of warps and each of the plurality of wefts of the fabric has an individual yarn count and material composition. By controlling a combination of the yarn counts of the plurality of warps and the plurality of wefts, a total number of threads and a material composition ratio of the warps and wefts required for the vibrating diaphragm are achieved.

A method for joining sides of a speaker enclosure while minimizing the appearance of a seam in the joint includes affixing a speaker grill element to a substructure element, where the speaker grill element has a depth dimension that is shorter than its length and width dimensions, includes a first surface and a second surface that are substantially parallel to each other, and includes hole openings between the first surface and the second surface, where the substructure element has a depth dimension that is shorter than its length and width dimensions, includes protrusions above its front surface, and includes openings that are larger than the hole openings in the speaker grill element, and where the speaker grill element is aligned lengthwise to a first plane, inserting the joined speaker grill element and substructure element into a mould, where in combination with portions of the speaker grill element and the substructure element, a surface of the mould forms a mould cavity for injection moulding a side element, and injecting molten plastic into the mould cavity to form an injection moulded side element.

A method for preparing a composite body (1) comprising a support body (2) and at least one decorative element (3), preferably a gemstone (3a, 3b), the support body (2) comprising a thermoplastic material, the method being characterized by the steps of: arranging the decorative element (3) on the support body (2), heating the support body (2), pressing the decorative element (3) into the support body (2) by using a stamp (4) consisting of an elastically deformable material, the material of the stamp (4) being selected from the group of elastomers.

Disclosed is a molding method of a vehicle speaker grill. The disclosed molding method of a vehicle speaker grill includes a molding process of transferring a printed film to an injection molded product; and a post-process of processing the injection molded product to which the printed film is transferred, in which the molding process includes charging a printed film between a first mold and a second mold, mold closing the first mold and the second mold, injecting a resin between the printed film and a concave portion of the irregularity, and transferring a portion of the printed film, and mold opening the first mold and the second mold and extracting the injection molded product, and the post-process includes removing the transferred portion other than the upper surface of the injection molded product from the transferred printed film by injecting air into the upper surface of the extracted printed film.

A method of manufacturing a membrane for an electro-acoustic transducer through spray coating of a liquid elastomer solution is provided. The method includes spraying the liquid elastomer solution, which may comprise a silicone, onto a mold having the desired membrane geometry, allowing the solution to cure and remove the membrane from the mold. The mold can be configured to hold other components of an electro-acoustic transducer that will be attached to the membrane after the curing step. Also provided is a membrane for an electro-acoustic transducer comprised of an elastomer and made using spray coating of a liquid elastomer solution.

The invention relates to a loudspeaker membrane having a sandwich structure, having a central web separating two layers of material based on high-rigidity threads impregnated with a polymer resin, characterized in that the central web is formed from a layer of material based on oriented natural fibers that are impregnated with a polymer resin.

There is provided a loudspeaker wherein a frame is moulded with a magnet system such that the frame extends through an aperture in the magnet system. By moulding the frame to extend as a single piece through an aperture, the frame can be attached to the magnet system without glue. The aperture in the magnet system extends from one side to another. By forming the frame to extend over the opening at each side, the frame can be securely connected to the magnet system. The aperture in the magnet system extends between a first surface and a second surface. The first surface and the second surface are on opposed sides of the magnet system. By the frame extending over at least a portion of the first and second surfaces, the frame extends over the apertures and securely connects the frame and magnet system, forming a unitary part.

A resin housing having an electronic component and a method for manufacturing the same are disclosed. The resin housing includes an electronic component mounting film that includes a housing made of resin, a base film disposed along an inner surface of the housing, a circuit pattern layer formed on at least a surface opposite to a side of the housing of the base film, and an electronic component connected to the circuit pattern layer and mounted on a surface opposite to the side of the housing of the base film. The electronic component mounting film is integrated with the housing. An impact absorbing layer covers the electronic component of the electronic component mounting film and a periphery of the electronic component. The circuit pattern layer of the electronic component mounting film is not bent around a portion on which the electronic component is mounted.