Abstract: This invention provides a baffle isolation system for isolating a baffle from a housing in a loudspeaker mounting system. The isolation system may include an isolation mechanism that insulates the baffle from the speaker housing. The isolation mechanism may include a bumper member coupled to a hollow shaft. In another embodiment, the bumper member may also include at least two resistant members located on either side of the bumper and coupled to the hollow shaft. These resistant members act to acoustically reduce sound penetration through the isolation system. Radial isolation may be achieved by the bumper acting to reduce the transmission of vibrations from the baffle to the housing, while longitudinal isolation may be achieved by the resistant members. Ideally, the bumper and the resistant members may be manufactured out of an elastomeric material and may be designed as separate members or as one unitary member.

Abstract: A ceiling tile transmitter and receiver system having at least one transmitter/receiver device located in a ceiling panel either during or after the ceiling panel fabrication process. In one embodiment one or more pockets of variable size and shape are created on a surface of the ceiling panel during or after the ceiling panel manufacturing process and then a transmitter/receiver device, such as an RF antenna, is inserted in the pocket. In another embodiment, the transmitter/receiver device is embedded in the front side (lower surface) of the ceiling tile and a “scrim” covering is placed over it to secure it in place. The transmitter/receiver device can also be embedded inside the ceiling tile or on an upper, lower or side surface of the ceiling tile. Various combinations of these embodiments can be used with a single ceiling tile.

Abstract: A fire protective flat panel radiator assembly for installation in a suspended ceiling grid is provided. The assembly includes a flat panel radiator having a frame that supports a sonic diaphragm, which is driven by a transducer to reproduce an audio program. A back box is mounted to the radiator and the back box covers and encloses the diaphragm and other fire susceptible components of the radiator. The back box is provided with a cut-out portion that is covered with an air pervious panel, which is resistant to fire hazards but that allows air flow in and out of the back box. In one embodiment, the radiator has a bridge and the back box is formed by a pair of shells mounted on each side of the bridge to enclose and protect the diaphragm. The result is a fire protected flat panel radiator assembly that meets the fire performance requirements for air handling plenums while retaining the sonic fidelity of a flat panel sound radiator without a fire protective back box.

Abstract: A casing for an acoustic equipment formed mainly of a filler and a thermosetting or thermoplastic resin. The filler is comprised of a cellulose-based powdered material, such as wooden powders obtained on crushing a wooden material and an powdered material smaller in size and harder than the cellulose-based powdered material. The powdered material is secured or deposited under a pre-set pressure on the surface of the cellulose-based powdered material.

Abstract: A powered or active sub-woofer speaker system includes a power supply circuit, an audio amplifier circuit and a sub-woofer audio driver. The power supply circuit includes a toroidal power transformer to supply power to the audio amplifier circuit. The amplifier circuit includes a class-D audio amplifier adapted to amplify signals received from an audio source and to couple them to the sub-woofer audio driver. Each of the power supply circuit, audio amplifier circuit and sub-woofer audio driver has a low profile to permit the sub-woofer speaker system to be mounted in a closely confined space such as a house wall cavity.

Abstract: A speaker holder includes a speaker engagement portion (52) abutting the bottomed cylindrical portion (26A) of the frame (26) of the speaker (10) and a plurality of engagement legs (54) extending from the speaker engagement portion (52). The speaker (10) is disposed tightly between the speaker engagement portion (52) and the printed circuit board (2) and fixed thereto via the engagement legs (54).

Abstract: A speaker assembly device for a door of a vehicle is capable of being set at a low cost at vehicle doors of different thicknesses, shapes, etc., to which a speaker is mounted. The speaker assembly device for a door of a vehicle includes a speaker unit; a holder for mounting the speaker unit to the front portion, the holder including an engagement portion at the back portion; and a spacer including an engaging portion and an opposingly contacting portion, the engaging portion being engageable with the engagement portion of the holder and the opposingly contacting portion opposingly contacting the door of the vehicle.

Abstract: A speaker box is covered with a buffer material exclusive of a portion where an acoustic output is derived from a speaker unit. The speaker box covered with the buffer material is attached to the surface of a wall member such as an interior member of a vehicle body or a side plate outside the vehicle body in a manner the speaker box is pressed by a holding member, which is a part of the interior member or designed member, and secured by bolts. Even when the surface of the speaker box is vibrated, the buffer material prevents an acoustic output due to the vibration from being generated so that no unnecessary acoustic signal is generated.

Abstract: A speaker for vehicle has a weight mounted on the backside of a magnetic circuit of a speaker unit. The weight includes a weighting part having a shape in which the thickness in an axial line of the speaker unit is made small and the diameter in a direction perpendicular to the axial line is extended. The outer diameter of the weighting part is made longer than that of the magnetic circuit. The weighting part has a peripheral edge extending forward in the axial direction to cover the outer periphery of the magnetic circuit at least partially. Where a frame of the speaker unit is provided with an opening, the weight is designed to have a shape and position so as not to face the opening.

Abstract: A loudspeaker and a method of manufacturing a loudspeaker having a front-mounted sealing element is disclosed. A molded sealing element made of thermoplastic elastomer is disposed on the front end face of the loudspeaker. The loudspeaker according to the invention, unlike conventional loudspeakers having foam sealing strips, is easier to manufacture and produces a better acoustic seal, as well as improved temperature and humidity stability.

Abstract: An entertainment sound panel that serves foreground music and paging applications. The entertainment sound panel of the present invention is constructed of honeycomb materials and adhesives. The driver of the entertainment sound panel is mounted and supported on a bridge structure that spans the entertainment sound panel on its back side. The driver interacts with the panel through the voice coil assembly. The driver is separated from the entertainment sound panel by a contact pad to deal with the shear problems between the sound panel and driver. Improvement in low frequency (bass) response is provided by a butt joint that lays next to an adjacent isolation pad, and can float freely. In another embodiment, the present invention provides a lower cost flat panel sound radiator for low end business applications where the performance characteristics of the radiator are less important than the cost. The low end flat panel radiator is constructed from a polypropylene or similar material.

Abstract: The invention concerns the embodiment of panel loudspeakers working according to the bending wave principle. Said loudspeakers are generally formed by at least one acoustic panel (11) and at least one driver (12), the driver (12) being connected to the acoustic panel (11). When such acoustic panels (11) are used for reproducing low frequency audio signals, the acoustic panel (11) must be arranged in sufficiently large sound walls in order to exclude the occurrence of an acoustic short circuit between the front part and the back part of the panel. Apart from being costly, only one side of the sound walls is actively used for sound generation as a result of the separation of both acoustic panels (11). Hence, the invention aims at providing a panel loudspeaker (10) that does not require any additional sound walls in order to exclude the occurrence of an acoustic short circuit while at the same time enabling full utilization of the surface of the acoustic panel (11) for sound generation.

Abstract: A speaker pod for housing an audio speaker. The speaker pod is adapted to be installed in a channel having an effective height and a depth defined by a floor, a sidewall, and a top, such as may be found, for example, below the door-frame of a 1997-model-year Jeep® Wrangler® vehicle. The speaker pod comprises a multi-sided enclosure having a back plate adapted to extend upwardly from the floor adjacent to and approximately parallel to the sidewall, a front plate having a projected height and an opening for mounting a speaker therein, and a top connecting the back plate with the front plate. The top has a step comprising a bottom having a width approximately equal to the depth of the channel and a riser having a height approximately equal to the projected height of the front plate minus the effective height of the channel.

Abstract: A speaker enclosure (10) comprising a speaker box (12) having an opening (27) and adapted for mounting within a wall (20) upon a wall stud (22); a compressible gasket (14) affixed about the box opening (27); a faceplate (16); and a plurality of independently adjustable coupling mechanisms (18) for coupling the faceplate (16) with the box (12). The protruding, uncompressed gasket (14) is compressed by the faceplate (16) and the coupling mechanisms (18), which may be independently adjusted to provide an optimum and substantially uniform degree of separation between faceplate (16) and wall (20), thereby reducing distortion, vibration, and damage due to undesirable contact therebetween. A spring (160) is provided to prevent over-compression of the gasket (14) due to heavy or low frequency speakers, thereby facilitating maintaining the uniform degree of separation; and a spacer (162) is provided to maintain the spring (160) in its operating position.

Abstract: An arrangement fastens a loudspeaker covered by a loudspeaker screen to a covering part of a vehicle. The covering part has a recess adjacent to the loudspeaker. The loudspeaker screen and a holding part are mutually connected by fastening screws, and are locally supported on opposite sides of the covering part. Several mutually spaced domes are arranged on and projecting away from the loudspeaker screen to penetrate openings constructed at the covering part. Either the holding part or the loudspeaker is fitted onto the free end of each dome projecting over the covering part and being held in position thereon by a screwed-in fastening screw.

Abstract: An electronic device has a loudspeaker unit and a casing with a support, which receives the loudspeaker unit, and with a wall perpendicular to the mounting direction of the loudspeaker unit in the support.

Abstract: A mounting bracket comprises a plurality of spring-loaded dog assemblies for retaining a bezel to a ceiling or wall of a building structure without having to use external attachments. Each dog assembly has a dog tower which is molded to the rear the bezel. The dog tower has a spiral slot opening on one side which enables a dog member to be placed therein and rotated down or up within the dog tower to clamp to the material of the wall or ceiling. A notch is provided on the spiral slot opening to fix the dog member in a pre-mounting position. The dog member has a dog post that fits inside of the dog tower, where a clamping dog leg extends from the side of the dog post and has a bump that mates with the notch on the dog tower to fix the dog member in the pre-mounting condition. A coil spring is inserted inside the dog tower and between the dog post and a bottom of the dog tower.

Abstract: The present invention relates to a loudspeaker system designed to mount into a building's interior wall through an opening between two framing studs. The loudspeaker system includes a speaker enclosure with two opposed side walls. At least one side wall has a slot formed in it. At least one rail is mounted to a framing stud and extends outward from the opening. The enclosure is mounted to the wall by sliding the slot along the rail. Fasteners are used to secure the enclosure to the rail.

Abstract: A combination speaker and dome lamp assembly is adapted to be mounted at the intersection of a roll bar and side bar of a vehicle equipped with such bars, such as convertible off-road vehicles.

Abstract: An acoustic chamber formed in door of a vehicle includes a metal door inner panel having an aperture extending therethrough, and a door module secured in the aperture of the door inner panel. The door module includes an indentation and may be made of a polymer or a fibrous material. An interior door trim panel overlies the door module and a loudspeaker is secured between the interior door trim panel and the door module. The interior door trim panel may include a bulge opposing the indentation in the door module, with the loudspeaker located between the bulge and the indentation. A sealing element is secured between the door module and the interior door trim panel for defining an acoustic chamber between the door module and the interior door trim panel. The acoustic chamber enhances the performance of the loudspeaker, thereby allowing a smaller loudspeaker to be used.

Abstract: An apparatus and method to adjustably accommodate, align and reinforce an audio speaker's installation within a speaker enclosure irrespective of said speaker's diameter, the enclosure having an external mounting surface and a speaker aperture opening which abuts horizontal and vertical plane mounting surfaces for an enclosure ring, the speaker being insertable into and through said aperture from a front direction comprising an enclosure ring section having a hollow center portion, a surface mount portion and an insertion collar portion, said insertion collar portion extending perpendicularly from said surface mount portion; a mounting ring adjustably and removably mountable to the speaker and enclosure ring by fastening means with the mounting ring having a hollow center portion dimensioned to adjustably accommodate a speaker diameter.

Abstract: A speaker enclosure (10) comprising a speaker box (12) having an opening (27) and adapted for mounting within a wall (20) upon a wall stud (22); a compressible gasket (14) affixed about the box opening (27); a faceplate (16); and a plurality of independently adjustable coupling mechanisms (18) for coupling the faceplate (16) with the box (12). The uncompressed gasket (14) protrudes beyond the wall surface (26) until the faceplate (16) is brought into contact with and compresses the gasket (14) by the coupling mechanisms (18) which may be independently adjusted to provide an optimum and substantially uniform degree of separation between faceplate (16) and wall (20), thereby reducing distortion, vibration, and damage due to undesirable contact therebetween.

Abstract: This invention is directed a combination of a speaker base and a mounting bracket that secures a speaker enclosure to either a horizontal surface or a vertical surface. The mounting bracket may be adapted to couple to a wall and releaseably to the speaker base. The speaker base may be adapted to pivotally couple to the speaker enclosure so depending on whether the speaker base is mounted onto wall or table, the speaker enclosure may be pivoted into a desired position.

Abstract: An acoustic transducer is secured to a plate having a front side and a back side. The transducer has an outer body with a front portion and rear portion and is sized to entirely fit inside an electrical gang box. A front-to-back enlarged opening in the plate is sized to receive the front portion of the transducer body. The transducer is secured to the plate so that the front portion is located within the front-to-back opening of the plate and is generally flush with the front side of the plate and most of the transducer body including the rear portion extends behind the plate into the gang box.

Abstract: A compact speaker is enabled to mount into panels made with either of two different sized standard mounting cutout patterns, e.g. Japanese JIS or the larger European DIN, providing the small JIS overall basket diameter along with an unusually large effective cone “air piston” diameter with full excursion for enhanced low frequency response. For mounting to a JIS-configured panel, an annular adaptor ring is configured with an array of four mounting screw clearance holes in a JIS pattern by which the ring is attached to the panel, and four threaded holes on a larger circle by which the basket is then attached to the ring by relatively small sized machine screws. For mounting to a DIN-configured panel, the adaptor ring is not used: the plastic basket is configured with four extending ears providing clearance mounting holes at DIN mounting locations for self-tapping screws by which the speaker is mounted to the DIN-type panel.

Abstract: Quick-detachable structure for on-wall speaker panel, including a frame body and a panel. An inner frame of the frame body is formed with a step section. Certain positions of the step section are formed with insertion notches for inserting with the panel. The panel is formed with large and small sound holes. One end of the panel is disposed with latch plates. Certain positions of the panel are formed with through holes for respectively connecting with rotary buttons with stop blocks. The latch plates of the panel are inserted in the insertion notches of the frame body. By means of rotating the rotary buttons, the stop blocks are engaged with or disengaged from the step section of the frame body. Therefore, the panel can be detached from the frame body without using any tool and the speaker can be conveniently installed.

Abstract: A surface mount ring assembly for loudspeakers which comprises a ‘hard’ ring in which the speaker is secured. This hard ring is, in turn, secured to a resilient or ‘soft’ ring which soft ring is secured in the wall opening. The soft ring has a durometer of between 30 to 90 and a dynamic loss modulus of 1010 Dynes/cm2 at 100 to 1000 Hz. This effectively isolates the loudspeaker from the resonant frequency of the structure in which the speaker is secured.

Abstract: An apparatus for mounting a flat panel sound radiator into a tegular ceiling. The tegular ceiling has openings defined by main beams and crossbeams. The main beams are secured through hanger wires to a hard ceiling. The main beams and the crossbeams have flanges with the crossbeams resting on the flanges of the main beams. The mounting apparatus has a tegular frame with reveal edges formed by multiple horizontal and vertical plates. A flat panel radiator is mounted inside a tegular frame with the lower edge of the tegular frame below the flanges of the main beams. The radiator panel can be fabricated from a honeycomb core. A combination of containment elements and isolation elements are used to isolate the radiator panel from the tegular frame both mechanically and acoustically. An acoustic scrim is attached to the bottom of the tegular frame.

Abstract: An embodiment of the invention comprises an apparatus for mounting a speaker to a wall, comprising a wall plate covering the in-wall electrical box and having an opening and a support member being coupled to the wall plate and capable of coupling to the speaker.

Abstract: A holder for a loudspeaker to be mounted in a motor vehicle has a receptacle for receiving a loudspeaker. The receptacle has at least one support for supporting the receptacle on a part of the motor vehicle. At least one seal is arranged on the support and seals a mounting space provided within the motor vehicle for receiving the loudspeaker in the mounted position of the holder. The holder is manufactured by first injection-molding the receptacle and subsequently injection-molding the seal onto the receptacle.

Abstract: Electronic apparatus having a support structure or casing and a loudspeaker attached thereto, the loudspeaker comprising a resonant panel-form member and a vibration exciter mounted to the panel-form member to apply bending wave energy thereto to cause the member to resonate to produce an acoustic output. The vibration exciter is grounded on the support structure or casing and is adapted to support the panel-form member on the support structure or casing, thus forming a mount for the panel-form member.

Abstract: A loudspeaker enclosure is disclosed which includes a horizontal bottom wall, front wall means and parallel spaced vertical side walls connected with the bottom wall. The front wall means include an adjustable baffle board with at least one opening for mounting a loudspeaker and a horizontal top wall is connected with the upper edges of the front wall means and the side wails. Electronic components of a musical instrument amplifier may be mounted into the upper section of the enclosure. The invention is characterized by the provision of said adjustable baffle board which can be vertically tilted backwards or, as an alternative, sidewise to change the listening axis from the loudspeaker to the listener for optimum directional sound quality.

Abstract: A speaker assembly comprising a speaker housing, a speaker mounted in the housing, and at least two threaded studs connected to the housing and speaker and extending away from the external surface of the housing. The studs have an unthreaded, pointed end that is particularly suitable for piercing a ceiling tile with little effort or mess. There are at least two nuts for threading over the studs to secure the studs to a ceiling tile after the studs pierce the tile to attach the housing to the tile, and at least two wire nuts to connect amplifier wires to the tip of the studs. The speaker is mounted to a ceiling tile by piercing the tile with the studs and securing the studs to the other side of the tile with the nuts. The amplifier wires are then connected to the tips of the studs via the wire nuts.

Abstract: A speaker enclosure (10) comprising a speaker box (12) having an opening (27) and adapted for mounting within a wall (20) upon a wall stud (22); a compressible gasket (14) affixed about the box opening (27); a faceplate (16); and a plurality of independently adjustable coupling mechanisms (18) for coupling the faceplate (16)with the box (12). The uncompressed gasket (14) protrudes beyond the wall surface (26) until the faceplate (16) is brought into contact with and compresses the gasket (14) by the coupling mechanisms (18) which may be independently adjusted to provide an optimum and substantially uniform degree of separation between faceplate (16) and wall (20), thereby reducing distortion, vibration, and damage due to undesirable contact therebetween.

Abstract: An apparatus for mounting an audio speaker within a wall such that the apparatus and speaker are attached to and supported by one or more wall studs and so that a face of the audio speaker is substantially flush with the wall. The apparatus broadly comprises a substantially rectangular box having a backwall and four upstanding sidewalls. One or more of the sidewalls is provided with an aperture, and inside the aperture is located a fixture assembly. The fixture assembly comprises a spacer mount through which is threaded a spacer having a bore. The spacer is threadably extendable and retractable, and can be extended to a length sufficient to contact the nearest wall stud. A fixture is then inserted into and through the bore in the spacer and is driven or screwed into the wall stud to as to secure the apparatus and speaker in position.

Abstract: A mounting arrangement for a loudspeaker, luminaire or similar apparatus, comprising a housing in which the apparatus is received and at least one resilient structure attached to the housing and to the apparatus, the length of the resilient structure between its points of attachment being such that when the apparatus is received in the housing the resilient structure is deformed and exerts a force retaining the apparatus in the housing, withdrawal of the apparatus from the housing requiring further deformation of the resilient means through a state of maximum deformation to a state of lesser deformation.

Abstract: An apparatus for mounting a flat panel radiator into a ceiling grid. The ceiling grid system includes openings defined by main beams and crossbeams. The main beams are secured through hanger wires to a hard ceiling. The main beams and the crossbeams have flanges with the crossbeams resting on the flanges of the main beams. The mounting apparatus has a frame including a top plate, a side plate, and a bottom plate, containment elements and isolation elements attached to the frame, and an acoustically transparent scrim attached to the bottom of the frame. The flat panel radiator is mounted between containment elements and isolation elements. The radiator panel can be fabricated from a honeycomb core. The containment elements may be made from a stiff to resilient material, whereas the isolation element will always be resilient to vibration isolate the radiator panel from the ceiling grid system both mechanically and acoustically. The flat panel sound radiator assembly can also be installed in wall partitions.

Abstract: A system and method for providing concurrent mechanical and electrical connections to a speaker system allows full rotational motion of a speaker with respect to an enclosure. The system comprises a mechanical mounting mechanism having an integrated electrical coupling mechanism configured to establish a concurrent mechanical and electrical connection between the speaker and the enclosure. The mounting system comprises cylindrical intermating members that are configured to axially and concentrically couple with one another, which allows the speaker to have a full range of rotational motion with respect to the enclosure. Thus, the system is designed so that the cylindrical intermating members of the speaker portion of the system concentrically and axially couple with the cylindrical intermating members of the enclosure portion of the system, thereby allowing concurrent electrical and mechanical coupling between the speaker and the enclosure.

Abstract: An in-wall speaker mounting apparatus adapted to attach to adjacent studs in a wall is provided. Such stud attachment permits the weight of the apparatus as well as any speakers attached to the apparatus to be supported by the studs and not the wall in which the apparatus is mounted. The apparatus comprises a backwall and four upstanding sidewalls. At least one sidewall or the backwall is provided with an access hole which serves as an entry point for speaker wire or the like. At least one, and preferably two opposing sidewalls are provided with a pair of apertures each having a fixture assembly mounted thereto. The fixture assembly comprises a spacer mount having a flanged portion flush with the exterior portion of the sidewall and an exteriorly threaded region extending into the apparatus. A flanged hex nut is threaded onto the threaded region of the spacer mount with the flanged portion of the hex nut flush with the interior portion of the sidewall.

Abstract: An audio speaker (10, 76) has a housing (12, 78) with a front panel (14, 80) secured thereto, and with a grille (18) removably mounted to the front panel (14, 80). A series of combined connection assemblies (20, 84) serve to connect both the panel (14, 80) to the housing (12, 78) and the grille (18) to the panel (14, 80). The assemblies (20, 84) include a socket (50) which is seated within a panel opening (34), with couplers (62) securing the panel (14, 80) to the housing (12, 78). An insert (70) is threadably received within the socket (50). Connectors (42) secured to the grille frame (38, 82) include a bifurcated resilient ball (68) which is frictionally received within an associated insert (70).

Abstract: A box-like enclosure for spatially orientable speakers, having a plurality of engagement elements formed during the molding of the enclosure in its peripheral region and engaged by ends of anchoring cables in order to allow any spatial orientation of the enclosure.

Abstract: A low profile speaker enclosure for mounting on a structure including a speaker housing and an electroacoustical transducer is disclosed. The speaker housing has a front face and a back each defining a length and a width, and a plurality of sides substantially separating the front face and the back and defining a thickness of the speaker housing. In the preferred embodiment, the front face and the back are substantially parallel. The front face, the back, and the plurality of sides of the speaker housing substantially define a chamber. The front face defines a speaker aperture opening into the chamber. The electroacoustical transducer is mounted in the speaker aperture. At least one of the sides defines a side aperture. The back of the low profile speaker enclosure defines a channel and defines a back aperture providing an opening between the channel and the chamber. The side aperture is also defined by the channel.

Abstract: An acoustic chamber formed in door of a vehicle includes a metal door inner panel having an aperture extending therethrough, and a door module secured in the aperture of the door inner panel. The door module includes an indentation and may be made of a polymer or a fibrous material. An interior door trim panel overlies the door module and a loudspeaker is secured between the interior door trim panel and the door module. The interior door trim panel may include a bulge opposing the indentation in the door module. A sealing element is secured between the door module and the interior door trim panel for defining an acoustic chamber between the door module and the interior door trim panel. The acoustic chamber enhances the performance of the loudspeaker, thereby allowing a smaller loudspeaker to be used.

Abstract: The invention concerns a loudspeaker having an elongate parallelepiped hollow body, whereof one longitudinal surface is made up of a stretched elongate rectangular planar diaphragm. The diaphragm is suspended by its edges to the body adjacent side surfaces, and is integral with an elongate rigid inner part extending in the body longitudinal direction, and bearing a mobile electromagnetic coil, parallel to the diaphragm. The coil is arranged between two fixed magnets located along the body two longitudinal side surfaces which form, with the base of said body, polar parts. Said loudspeaker is useful as component of an active anti-noise system, associated with a double glazing.

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: An automobile vehicle door (1) includes a box structure (3), a module (4) including an acoustic chamber (6) supporting a speaker (7) adapted to be applied on the periphery of an opening (5) formed on the inner side of the box structure and an inner trim panel (8) covering the module. The module is fixed in a watertight manner on the surround of the opening (5) of the box structure, a peripheral rib (12) is provided for defining in the module a volume of air V excited by the rear wave of the speaker, and a vent is provided in the trim panel for returning the rear wave of the speaker in the direction toward a listening zone. With this arrangement, the door is provided with an acoustic enclosure of the “bass reflex” type having a very good acoustic efficiency in respect of the bass frequencies with no risk of entry of water into the compartment of the vehicle through the vent (17).

Abstract: The invention relates to acoustic walls for large public events. Traditionally, sound is reproduced by using a plurality of large and heavy loudspeaker boxes which requires a complicated and expensive support system. The present invention provides a segmented acoustic wall which has an essentially flat shape and is also extremely lightweight. Several of these segments can be integrated to form an acoustic wall by coupling the different segments with one another, whereby the entire surface area of the acoustic wall can be used to radiate sound without requiring additional sound sources in the audience space. The various segments can be optimized for certain frequency ranges by tuning the surface area and depth of the respective segments to the respective transmitted frequencies. Several acoustic walls can be placed side-by-side to flexibly conform to different requirements in the audience space.

Abstract: A plenum mounted, flat metal panel diaphragm masking loudspeaker includes a flat, stamped sheet metal frame which has a deployed state and an undeployed, flat state well suited to storage or shipping. A large, movable tab at the bottom of the frame is weakened by a series of small apertures and forms a hinge or fold line. Electrical accessories including a transformer, a rotary switch for selecting transformer taps and signal connections are included in an enclosed box mounted on the foldable tab. The flat panel masking loudspeaker is shipped flat in the undeployed state and then the large tab is deployed by being folded outwardly before installing the flat panel masking loudspeaker in a ceiling plenum. During installation, the tab is folded along the hinge or fold line out to approximately 90.degree.

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: Acoustical housing for supporting and enhancing the performance of speakers. A preferred apparatus includes a support well that is fabricated from acoustically absorptive material and is adapted to be mounted between wall or ceiling studs. A cover or a portion of wall board may be installed to completely enclose the support well within the wall to define a cavity into which a portion of a speaker body may extend. The speaker or speakers are affixed to the cover or wallboard in a conventional manner such that the speaker body extends into the cavity and the sound emitting surface of the speaker is exposed. Methods for installing the acoustical housings into existing wall or ceiling structures without compromising the acoustical and structural integrities of such structures are also disclosed.