Abstract: In an electroacoustic transducer of the present invention, a casing supports a diaphragm, a drive coil is provided on the diaphragm, a first magnetic structure has a first space in a center thereof provided within the casing such that a center axis penetrates the first space, and a second magnetic structure has a second space in a center thereof provided within the casing on a side opposed to the first magnetic structure with respect to the diaphragm, such that the center axis penetrates the second space. The first magnetic structure is oriented such that a magnetization direction thereof is parallel to the center axis. The second magnetic structure is oriented such that a magnetization direction thereof is opposite to the magnetization direction of the first magnetic structure.

Abstract: A speaker has a case having a peripheral projection, a yoke made of magnetic material and secured to the case, and a permanent magnet provided in the case. A vibrating plate having a peripheral projection is secured to an outside wall of the case at the peripheral projection. A protector plate is secured to the case.

Abstract: A case comprises an upper case and a lower case. A vibrating plate is secured to the upper case, a voice coil is secured to an underside of the vibrating plate. Each end portion of the voice coil is engaged in a groove formed in the upper case.

Abstract: Speaker mounting systems and methods of mounting speakers are disclosed herein. One embodiment of the invention a speaker mounting system can include a mounting member attachable to a structure, a connector attachable to the mounting member, a docking member attachable to the connector, and a speaker housing releasably attached to the docking member. The speaker housing has a side with a receiving portion. The receiving portion removably receives the docking member. In another embodiment of the invention, a method for attaching a speaker housing to a structure includes mounting a mounting bracket to the structure, connecting a docking member to the mounting bracket using a connector, removably attaching a speaker housing to the docking member, and aiming the docking plate or speaker housing as a unit relative to the mounting bracket and structure.

Abstract: A knockdown speaker mainly comprises a magnetic circuit base, a casing, and a vibration unit. The magnetic circuit base is substantially a hollow body having a projecting cylinder at center and a plurality of fixing holes in its top rim. The vibration unit is composed of a funnel-like cone socket and a damper set, which are formed by combining a bottom end and a top end of the vibration unit respectively with a sound ring set or a piece of drum paper. The magnetic circuit base is mounted on the bottom rim of the casing. The vibration unit is jointed with the magnetic circuit base via the sound ring set arranged at the bottom end of the vibration unit to form a consolidated knockdown speaker.

Abstract: In an electroacoustic transducer (1) having a magnet system (8) and having a diaphragm holder (2) for holding a diaphragm (17) and having a moving coil (115) connected to the diaphragm (17), the moving coil (15) has a hollow cylindrical coil body (27) and two connecting leads (28, 29), a holding element (38, 39) connected to the diaphragm holder (2) being provided for each connecting lead (28, 29), which holding elements (38, 39) are constructed to be elastically deformable in a direction substantially parallel to the diaphragm axis (26) and, preferably, also to be mechanically damping.

Abstract: A woofer that is capable of producing a flashing light show depending upon the volume and frequency of the sounds emitted thereby. The woofer includes at least one light emitting diode and a control circuit that are conveniently mounted on a printed circuit board at the center of the woofer at an inconspicuous location below a transparent dust cover so as to achieve a compact configuration without effecting the aesthetic appearance of the woofer. The woofer also includes a magnetic structure having at least one permanent magnet and at least one electromagnetic voice coil that is adapted to move in first and opposite directions towards and away from the permanent magnet depending upon the changing polarities of an alternating current that is supplied to the electromagnetic voice coil.

Abstract: A microspeaker has a case, a vibrating plate, a voice coil secured to the vibrating plate. A pair of leads are embedded in one of members made of plastic. Both end portions of each of the leads are projected from the case. Each of both ends of the voice coil is secured to one of the projected end portions of each of the leads. Both the projected end portions of each of the leads are bent along a periphery of the case.

Abstract: A connecting device for connecting a sound producing device to an electronic equipment has a connector secured to the sound producing device, and having a pair of elastic contacts and an opening. A slider is provided to be inserted in the connector from the opening, and provided to press the elastic contacts of the connector against terminals of a substrate inserted in the connector from the opening.

Abstract: A signal processing distortion reducing system which includes a plurality of series connected, straight, conductive signal path sections. These sections direct the flow of signal currents into a series of sharp 90 degree turns, which minimizes electromagnetic coupling between adjacent conductive signal path sections. These 90 degree turns have a distortion reducing, collimating effect on electromagnetic signals. Variations in construction include machined squares and bent strips of sheet material.