Abstract: A loudspeaker, for example, for an in-vehicle hands-free commnunication system or an in-vehicle entertainment system is provided as part of a vehicle sun visor (10), or as an attachment (24) to a vehicle sun visor so that the loudspeaker can be placed relatively close to the driver's ears and in front of the driver. Accordingly, there will not be any significant tendency for the driver to turn their head when listening to the loudspeaker. The loudspeaker comprises a flat panel (26) which is driven by a piezo-electric actuator (28), enabling an extremely thin construction to be realised and the loudspeaker to be conveniently integrated into the sun visor, or provided as an unobtrusive attachment for the sun visor.

Abstract: In a device (8) which includes an electroacoustic transducer (7) for the acoustic reproduction of sound signals to an ear (14) of a user (2) who assumes a user position at the device (8), the transducer (7) is optimized for the acoustic reproduction of speech-signal sound waves and is equipped with additional means (25) for realizing a distinct directivity for the speech-signal sound waves emitted by said transducer (7) and, as a result of its directivity, the transducer (7) directs the speech-signal sound waves which it emits preferentially to the ear (14) of a user (2) who is in the user posture.

Abstract: The present invention is structured so as to prevent a fixing part from becoming an obstacle when fixing a coil bobbin for a horn for a vehicle to a case. The structure of the present invention is achieved by forming a tubular through hole extending toward the case opening side at a second bottom surface of the case; piercing a mounting hole through the case mounting piece of the coil bobbin; externally fitting the mounting hole over the tubular through hole; and folding the penetrating tip end of the tubular through hole tube as a folded tip portion toward the side of the hole peripheral edge of the mounting hole and engaging the penetrating tip end, as the folded tip portion, into a large hole part formed in the hole end of the mounting hole, whereby a mounting hole is fixed so as to be pinched by the second bottom surface and the folded tip portion.

Abstract: A substantially acoustically transparent speaker grille is bonded or molded to a rear shelf panel located between the cabin and trunk of a vehicle. The grille is pressed into and laminated between a pair of resin impregnated sheets of fibrous material during a hot press molding operation. The grille and shelf panel is overlaid with a layer of covering fabric so as to present a smooth aesthetic appearance within the vehicle cabin.

Abstract: A body-sensible swinging and vibrating apparatus is provided for enhancing the feeling of presence while a user is listening to the music or is using the playing unit. In the body-sensible swinging and vibrating apparatus, an arm is hung at the central lower portion of a swinging and vibrating stand (a seat) as well as an iron core is attached to said arm, the upper position of the arm is rotatively supported above the iron core to enable the swinging and vibrating stand to be inclined in every direction, a plurality of electromagnets are placed peripherally in the horizontal direction of the iron core. When sound or picture is outputted for audio, movies, video games or the like, the electromagnets are driven by the swinging signal and vibrating signal that are harmonized with the picture or the sound, and the swinging and vibrating stand is activated by said swinging signal and said vibrating signal.

Abstract: A bicycle sound system is provided including a tote bag adapted for being removably mounted on a bicycle. Also included is a portable audio unit removably positioned within the tote bag for transmitting audio signals from an output thereof upon the receipt of power. Next provided is a speaker unit adapted for being mounted to the bicycle and connected to the portable audio unit via connector wires for audibly transmitting audio signals upon the receipt thereof in combination with the receipt of power. A rechargeable battery pack is mounted on the bicycle for power purposes. A switch unit is adapted for being mounted on one handle bars of the bicycle adjacent to a handle grip thereof. Such switch unit includes a switch connected between the battery pack and the portable audio unit and the speaker unit via connector wires for providing the portable audio unit and the speaker unit with power upon the depression thereof.

Abstract: A speaker mounting assembly for use on a boat. The assembly consists of a rigid elongated speaker support bracket on which two interfacing boat engaging members are fixed opposite the speaker. The boat engaging members have a hole through their mid portion and are pivotally joined together each of their sides with a component of the boat, such as a rail, compressed between them. At their other side these two boat engaging members are fixed to the boat by a through bolt extending through both members. At the upper portion of one of the engaging members is a lever arm having an internally threaded hole that fits on the top of the through bolt and, when compressed, is used to retain the members to the boat. Alternately, the lever arm may be used to adjust the compressive force of the boat engaging members with respect to the engaged boat component on which mounted.

Abstract: The speaker hatchboard (26) allows audio speakers (34 and 36) to be installed in a sailboat (10) or other vessel without drilling holes through any boat surfaces. The speaker hatchboard (26) includes a body (28) dimensioned to be received within the slots (48) of a hatchway (22) or other boat opening, a pair of openings (30 and 32) for mounting the speakers (34 and 36) and housings (38 and 40) for the speakers (34 and 36). The speaker hatchboard is easily installed and removed by sliding the body (28) up or down within the slots (48).

Abstract: A loudspeaker (1) is connected to a chassis (13) and is capable of being inserted into a housing (28) by means of a releasable engagement of the loudspeaker (10) in the housing in an arrangement which makes better use of the available space in the vehicle, by allowing placement of the loudspeaker (10) at locations which are intended by the car manufacturer to be used for other accessories, although only temporarily. It is therefore possible to place the loudspeaker (10) of the invention in a push-through tunnel (29) adapted to allow items to be pushed through the rear seat back (36) of the automobile.

Abstract: A speaker system for use in an automobile vehicle, comprises: a pair of high frequency speakers disposed at opposite ends in a lateral direction of a front section within the vehicle; a pair of low/middle frequency speakers disposed at opposite ends in a lateral direction of the front section, a whole frequency speaker located in the center of the front section. Each of the high frequency speakers is a horn speaker made from a part of a windshield, a part of a side glass and a part of an upper surface of a dashboard in the vehicle.

Abstract: This invention outlines several applications of piezoelectric vibrators to produce quality flat panel speakers in passenger cabin applications. A system consisting of an audio amplifier and transformer is used to drive the piezo speaker. The electronics are packaged so that they fit in small modules that can be attached to a cabin structure to produce a speaker. The invention includes a variety of flat panel speaker designs, including one in which the existing structure is converted into a speaker, and thin membrane and or panels that are fitted with piezoelectric elements. A system consisting of cabin quieting and flat panel speakers is also discussed where the mid and high frequency audio is produced by panel speakers and the low frequency audio is produced from dynamic loudspeakers. The cabin systems discussed in this patent are applicable to automobiles, aircraft, trucks and buses.

Abstract: A sound reproduction unit comprises a central, head receiving portion and opposite first and second ends. The first and second ends have opposed front and back surfaces. A first acoustic transducer is mounted within the first end and a second acoustic transducer is mounted within the second end. First, second, third and fourth acoustically substantially transparent pathways are provided between the first transducer and the front surface of the first end, the first transducer and the back surface of the first end, the second transducer and the front surface of the second end, and between the second transducer and the back surface of the second end, respectively.

Abstract: A flush-mount swivel tweeter system for vehicular audio utilizes a tweeter unit enclosed in hemispherical shell housing, which fits in a swivel manner into a mating cavity in a mounting bushing configured externally with a threaded sleeve having a thin peripheral decorative front flange. The resulting swivel tweeter assembly can be flush-mounted through a round opening provided in the host panel. The flange is secured against the panel by a large mounting nut threaded onto the mounting bushing from the rear. A circular aiming range is available by a combination of swivelling the tweeter unit off-axis and rotating the entire assembly in the panel opening. Once aimed, the swivel tweeter is clamped in place by a nut and washer at the rear, and the mounting bushing is secured in place by tightening the large mounting nut against the rear of the panel.