A loudspeaker having a cylindrical sound-producing membrane includes an acoustic lens which radially surrounds the membrane. The membrane is composed of wire mesh formed into a cylinder. The cylindrical membrane is positioned on the magnet structure by an inner supporting cylindrical core column. Sound from the membrane is fractionally redirected by the lens which is centered along the axis of the membrane. The lens includes a plurality of radially disposed petals that reflect a portion of the sound. The base of the lens supports and mounts the loudspeaker magnet and driver assembly.

Disclosed is a reinforcing part for a speaker diaphragm. The reinforcing part includes a body layer, and the body layer includes through-holes penetrating surfaces of two sides of the body layer. The reinforcing part further includes fillers located within the through holes and configured for heat conduction. The fillers have a thermal conductivity higher than that of the body layer. The reinforcing part of the present invention improves the heat conduction capability between two sides of a support layer by providing through holes on the support layer and providing a heat-conducting filler within the through holes.

A metamaterial loudspeaker diaphragm is disclosed. The diaphragm includes a cone structure having a periodic arrangement of two dissimilar materials, e.g., soft and hard, in an alternating periodic pattern to achieve an anisotropic structure, which results in passive amplification of the sound. The anisotropic cone structure includes a baseline cone material and a different, compatible second material. The cone includes a body having a conical cross-section, an interior side, an exterior side, and concentric circles of material alternating between a soft material and a rigid material. Circumferential grooves disposed within the concentric circles include rigid material. Concentric circles including rigid material line the interior side of the body. Substantially all the soft material of the concentric circles is disposed on the exterior side of the cone. Spokes disposed on the exterior side of the cone extend from a base toward a vertex of the cone.

The invention discloses a screen sounding device including a frame, a screen, and a driving device. The driving device has a magnetic circuit system fixed on screen, an electromagnet driving the magnetic circuit system to vibrate and fixed on the frame and an elastic connector connecting magnetic circuit system and electromagnet. The magnetic circuit system includes a magnet arranged around the electromagnet and a magnetic frame fixing the magnet. The magnetic frame includes a top wall fixed to the screen, a bottom wall arranged opposite to top wall and a side wall connecting the top wall and the bottom wall. The magnet is fixed on a side surface of the side wall facing the electromagnet. Applying the technical solution can meet low energy consumption and provide adequate stronger driving force.

A system includes a first membrane, a second membrane and a third membrane spaced apart from one another, wherein the second membrane is between the first membrane and the third membrane, and the second membrane comprises a plurality of openings, a sealed low pressure chamber between the first membrane and the third membrane, and a plurality of electrodes in the sealed low pressure chamber.

The present disclosure discloses a sensitive diaphragm comprising a diaphragm body, an edge region of the diaphragm body being provided with a rim structure, wherein the rim structure is in a non-closed annular shape, a non-closed region is located at a part not closed by the rim structure, and the non-closed region are integral and continuous with parts of the diaphragm body adjacent to the rim structure. According to the sensitive diaphragm of the present disclosure, the annular rim structure is separated by the non-closed region.

Provided are a speaker unit and a speaker device. A main body of the speaker unit is a rectangular bowl-shaped structure, and comprises a suspension system, a magnetic circuit system having an annular magnetic gap, and a bowl-shaped frame connecting the suspension system and the magnetic circuit system. The bowl-shaped frame accommodates the suspension system and the magnetic circuit system. The magnetic circuit system is fixed to the interior of the bowl-shaped frame. The suspension system comprises a diaphragm and at least one voice coil connected to a bottom portion of the diaphragm. The magnetic circuit system comprises at least one magnetic circuit assembly matching the voice coil. One end of the voice coil is connected to the diaphragm by means of a voice coil frame. The other end of the voice coil is suspended within an annular magnetic gap of the magnetic circuit assembly. The voice coil can perform piston-like reciprocating motion in an axial direction in the annular magnetic gap so as to push the diaphragm to vibrate and emit sound. The present invention employs multiple engines to drive the same diaphragm to vibrate, such that vibration is more uniform and stable, thereby reducing nonlinear vibration, and controlling a magnitude of resistance (RE). The invention has a wide range of applications and an attractive appearance, and realizes efficient heat dissipation.

The present invention provides a multi-engine array system and a loudspeaker. The multi-engine array system comprises at least two engine assemblies; the at least two engine assemblies are mounted, in an array, at the bottom of a basin stand of a loudspeaker, each of the engine assemblies comprises a voice coil configured with a voice coil skeleton and a magnetic circuit system which provides a magnetic field for the voice coil, the magnetic circuit system comprising a magnetic bowl, a magnet and a magnetic conductive plate, the magnetic bowl being mounted at the bottom of the basin stand, the magnet and the magnetic conductive plate being located within the magnetic bowl, a magnetic gap being formed between the magnetic bowl, the magnet and the magnetic conductive plate, the voice coil being suspended in the magnetic gap, and cross sections of the voice coil and the magnetic circuit system both being rectangular. The present invention has a wide application range, is able to effectively reduce power consumption, improve efficiency of the loudspeaker, reduce resonance frequency and improve heat dissipation effects, and is able to reduce various distortions such as nonlinear distortion by means of cooperation and restriction of multiple engine assemblies.

A sounding device includes a frame, and a vibration system and a magnetic circuit unit that are retained in the frame. The vibration system includes diaphragm and voice coil. The voice coil includes two first side edges and two second side edges. The magnetic circuit unit includes yoke, main magnetic body, and auxiliary magnetic body. The auxiliary magnetic body includes first auxiliary magnetic bodies each including main body portion and extension portion. The main body portion is recessed towards side surfaces of two first side edges to form grooves, the main magnetic body protrudes towards the grooves, and the pair of first side edges protrude towards the grooves, respectively. The sounding device can not only enable the auxiliary magnetic body to be more evenly surrounding the voice coil, but also enable the voice coil to have longer circumference with a same magnetic circuit area, thereby increasing BL value.

A loudspeaker with a non-uniform surround, a membrane and a stiffening element preventing the surround from flexing the membrane during operation. A non-uniform surround does not have the same cross section, along the radius of the speaker if circular, all around the perimeter of the membrane as some portions will be upwardly directed and other portions downwardly directed.