Abstract: An improved speaker structure includes dual suspension edges connecting a support seat, a sound ring and a diaphragm. Therefore, when the speaker outputs, the dual suspension edge will not deviate and can perform a highly vertical cutting movement. Besides, the dual suspension edge can perform a flip-flop movement and distribution, and can compensate insufficient tensile force during reverse vibration so as to increase power, reduce distortion, and enable the diaphragm to be independently secured to a top portion of the sound ring to obtain better sound quality.

Abstract: A transducer includes a supporting frame, a motor assembly providing a magnetic field across an air gap, a coil former supporting a voice coil in the magnetic field, a diaphragm attached to the coil former and coupled by a surround at its outer perimeter to the frame, and a spider having an inner perimeter coupled to the coil former and an outer perimeter coupled to at least one of the frame and motor assembly. The spider includes a plurality of rolls. The roll next adjacent the inner perimeter may have a first height. The roll next adjacent the outer perimeter may have a second height less than the first height. The surround may include a plurality of rolls. The roll next adjacent the diaphragm may have a third height, and the roll next adjacent the frame a fourth height less than the third height.

Abstract: A loudspeaker and method of assembling same is disclosed in which the motor structure and frame are interconnected, the voice coil is initially secured within the magnetic gap of the motor by the lower suspension and then the diaphragm and surround are installed by first affixing the surround to a flange at the upper end of the frame so that the outer diameter of the surround is concentric to its inner diameter, and then inserting the lower end of the diaphragm within a pool of adhesive carried by a well structure mounted to the exterior surface of the voice coil such that the diaphragm is allowed to move in both a lateral direction and a vertical direction within the well structure while the adhesive cures, thus maintaining the original shape of the surround and substantially preventing misalignment of the voice coil within the magnetic gap of the motor during operation of the loudspeaker.

Abstract: A moving coil transducer is produced by wrapping an electrical conductor around a thread and weaving the wrapped thread at a selected location in a cloth with an overshot region. The cloth is formed into a spider with a region of the cloth adjacent the overshot region as a perimeter of the spider. The spider is incorporated into the moving coil transducer. Electrical contact is made to a moving coil of the moving coil transducer through the electrical conductor wrapped around the thread.

Abstract: An electrodynamic transducer includes a frame, a magnet assembly providing a magnetic field across an air gap, a voice coil, a coil former for supporting the voice coil in the air gap, a diaphragm having an outer perimeter and an apex, and a surround coupled to the outer perimeter and the frame to support the outer perimeter from the frame. The coil former is coupled to the apex so that current through the voice coil causing the voice coil to move in the air gap causes the diaphragm to move. The spider has convolutions radially outward from the coil former. The surround may also have convolutions radially outward from the outer perimeter. The convolutions include truncated arcs.

Abstract: A loudspeaker comprising a frame, a motor structure, an upper suspension, a lower suspension, a diaphragm, and, a voice coil carrying a wire winding and being formed with a number of circumferentially spaced vent bores spaced from the winding. An adaptor is provided having a wall with a first end mounted to the former of the voice coil, a second end, and an intermediate portion extending between the first and second ends which overlies the vent bores of the former and is radially offset thus forming a passage between the wall of the adaptor and a portion of the outer surface of the former. A ledge is formed at the second end of the adaptor wall for mounting the free ends of the diaphragm and lower suspension, which, in turn, position the voice coil within the magnetic gap in the motor structure.

Abstract: A speaker apparatus in which the acoustic sound is radiated by flexural oscillations of a diaphragm in the form of a panel having a substantially flat surface. The speaker apparatus includes a panel-shaped diaphragm the outer rim of which can be oscillated substantially freely at least in the direction along the diaphragm thickness and at least one driver unit constituting an oscillation source secured to the diaphragm surface for imparting oscillations to the diaphragm. The diaphragm is set into flexural oscillations by oscillations applied from the driver unit driven on the basis of the playback input signal. By flexurally oscillating the diaphragm to radiate the acoustic sound, optimum frequency response characteristics can be obtained over a wide frequency range from the low to high frequency range. Moreover, the acoustic sound of optimum sound quality may be radiated in a state of minimum sound pressure level fluctuations over a frequency range from the low to high frequency range.

Abstract: In a speaker, a first corrugated damping device and a second corrugated damping device are arranged on a stepped portion inside a cone rack and vertically spaced by a spacer ring, and a third corrugated damping device is suspended above the first and second corrugated damping device and secured to a back member at the back side of the cone rack to stabilize a paper cone in the cone rack.

Abstract: Voice coil assemblies are designed so that the solder points which connect the coil wires and the stranded wires, are connected via a separate adhesive seam to the diaphragm or the voice coil carrier. According to the invention, the solder points are placed in the adhesive seam by which the centering membrane is connected to the voice coil carrier. The first region of the centering membrane is designed to be open in the direction of the voice coil. By locating the solder points in the adhesive seam a voice coil assembly is created which is distinguished by a low design height, a good current-carrying capacity and an excellent height reproduction.

Abstract: A voice coil adaptor ring and loudspeaker system of the moving coil type including a cone diaphragm supported by a frame, a voice coil former for supporting a voice coil, and a lower suspension for securing and centering the voice coil former in a magnetic gap while it is displaced by a magnetic circuit. The voice coil adaptor ring is mounted over the voice coil former and comprises a substantially cylindrical sleeve having at least one ledge extending outward from said sleeve for supporting the cone and lower suspension and a plurality of venting passages in fluid communication with a cone volume defined by the cone for venting hot air from the cone volume.

Abstract: A broad band loudspeaker (101) includes a diaphragm (103) driven by coil assembly (125) centered on a pole (131) of a magnet assembly (133) by a low-friction guide (127) depending from a lower end the coil assembly, and a low-friction guide mounted on an upper end of the pole (131). A suspension (107) for the diaphragm (103) includes two or more parallel, resilient suspension members (115a, 115b), extending between the diaphragm (103) and frame (105) and mounted through a pair of resilient mounting pads (119a, 119b, 125a, 125b). The lower guide (127) includes a flexible portion (151a) which acts like a flapper valve of a pump to create a current of cooling air past down the inside of the coil assembly (125), up the outside of the coil assembly and then out of flux gap (130).

Abstract: A concentric tube suspension system and loudspeaker system of the moving coil type, including a diaphragm supported by a frame, a voice coil including a former and voice coil winding supported by the former, and a suspension system for stabilizing and centering the voice coil in a magnetic gap while it is linearly displaced by an electromagnetic motor. The suspension system generally comprises a tubular stabilizer attached to the bottom surface of the diaphragm so as to concentrically straddle the voice coil and electromagnetic motor, and a lower corrugated suspension attached at one end to the frame and at the other end to the lower end of the stabilizer, wherein the stabilizer and lower suspension provide a centering force below the traditional neck joint location on the voice coil.

Abstract: The loudspeaker includes: a frame; a magnetic circuit portion; a diaphragm transmitting air vibration; a cylindrical voice coil bobbin connected to the diaphragm; a voice coil fixed to an outer peripheral portion of the voice coil bobbin; and a damper holding the voice coil in such a manner that the voice coil is capable of vibrating in a magnetic gap formed between an annular top plate and a center pole included in the magnetic circuit portion. The damper includes a flat portion which has a hole for passing the voice coil bobbin therethrough at its center, and a plurality of roll structures connected to a periphery of the flat portion and having a cross-section including a bent periphery. Each of the plurality of roll structures is fixed to the frame, and the hole of the flat portion is fixed to an outer peripheral surface of the voice coil bobbin.

Abstract: A loudspeaker has a chassis, a cone, an actuator and a sub-frame. The actuator is coupled between the chassis and the diaphragm. The sub-frame is flexibly coupled to the chassis and the diaphragm. The diaphragm is flexibly suspended from the chassis. The actuator directly drives both the diaphragm and the sub-frame through coils attached to the cone and to the sub-frame.

Abstract: There is provided a speaker damper comprising: an inner frame for inserting and holding a voice coil bobbin; an outer frame to be fixed on to a speaker frame in a speaker unit; a plurality of flexibly movable supporting arms bridged across a space between the inner frame and the outer frame; a plurality of reinforcing members each bridged across a space between two flexibly movable supporting arms adjacent to the inner frame.

Abstract: A loudspeaker system is physically integrated with a monitor. The monitor has a CRT. The loudspeaker system comprises an electro-acoustic transducer, a passive radiator and a tube mounted in between. The tube has a circular cross-section. The tube has an axis that is in parallel with a plane of the CRT's shadow mask.

Abstract: A damper for a loud speaker is produced by molding a substrate into a desired shape in which a fabric or knitted cloth composed of core-sheath type conjugate fibers composed of filaments having a core-sheath type structure is used as the substrate. A resin used for forming a core material in the core-sheath type structure functions as a matrix of the substrate. A sheath material having a lower melting point than that of the core material functions as an excipient, and is fused by a heat treatment and then solidified during the molding process, so as to bond together the intersections of fibers constituting the substrate and to cover the surface of the fibers. Thus, only a simple substrate production process is required and a damper for a loud speaker having excellent moldability, water-proofness, and durability is obtained.

Abstract: A cylindrical frame is mounted in a cabinet and a magnetic circuit is provided at an end of the frame. A diaphragm having a peripheral free edge is connected to a coil bobbin and a cylindrical ring is secured to the free end edge and disposed in a cylindrical supporting portion of the frame. An annular sealing member is secured to the cylindrical ring so that an outside peripheral wall thereof is slidably contacted with an inside wall of the cylindrical supporting portion of the frame.

Abstract: An inner suspension system for a speaker assembly comprising a center spider, an intermediate spider, and a linear spider. The system reduces distortion of the output from the speaker and increases axial integrity of the movement of the cone. The center spider and intermediate spider are disk shaped and are each attached to the frame of the speaker assembly and to different points on the voice coil former. The linear spider, on the other hand, is cylindrically shaped and is attached to the pole piece of the magnetic motor structure, and the cone converges upon the other end of the cylindrically shaped linear spider.

Abstract: A loudspeaker having a magnetizable pole piece, a voice coil member surrounding the pole piece with a portion of magnetic gap and connected to a vibratable diaphragm, and a damper supporting the voice coil member, is characterized in that an elastic member is provided between the pole piece and the voice coil member in the magnetic gap wherein an elastic member is made of an elastic material having an elastic constant substantially 1.5 times or more than that of the damper. In addition, the elastic material is made of a silicone rubber.