PLURAL DIAPHRAGM SOUND SOURCES

In the speaker system disclosed herein, the magnet supporting basket of a downwardly-facing, acoustic-suspension woofer supports a bell-shaped diffuser which circumferentially disperses midrange acoustic components radiated from the back side of the speaker cone. A cylindrical array of tweeter elements...     

The system provides improved bass response and stereo effect with the use of a plurality of speakers that are preferably disposed in a unitary cabinet. If two woofer speakers are employed they are disposed at an angle to each other and are disposed relatively close to each other to provide mutual coupling...     

An integrated stereo speaker system in which substantially non-directional bass sounds of low frequency are supplied exclusively to an enclosure common to right and left channels. Directional sounds in mid-range and higher frequencies are supplied to separated right and left treble speaker means with...     

An acoustic system for disposition proximate to an acoustical boundary comprising at least one acoustic transducer for directing acoustic energy away from the boundary and an acoustic reflector surface extending, without substantial acoustic discontinuity, from proximate to the center of the transducer...     

An elongated arm having cooperating sections as provided which may be selectively positioned with respect to each other to vary the effective length of the arm. Carried at each end of the arm for pivotal motion is an individual speaker. The assembly is normally carried at the top of the backrest of a...     

A room audio speaker system for use in combination with at least one room boundary surface, the speaker comprising an enclosure having a closed end wall for placement closely adjacent the room boundary surface and a second wall extending away from the end wall and providing a front edge and a rear edge,...     

A push-pull transducer system is provided for the reproduction of high fidelity sound to be used with amplifiers or receivers of high quality. The system consists of connecting two loudspeakers of the same size in face-to-face relationship so that where they are joined or bolted to face each other, there...     

A speaker is enclosed in furniture cabinets consisting of three units. The base cabinet, supported on legs, is a rectangular parallelepiped and accommodates a full range speaker. The top cabinet is pyramidal and accommodates a tweeter at one of its sides. An intermediate cabinet of smaller dimensions...     

A high fidelity speaker array comprises a full range speaker board, a pair of tweeter boards disposed at an angle of from 120.degree. to 165.degree. with respect to said full range speaker board, and a pair of midrange speaker boards disposed at an angle between 5.degree. and 85.degree. with respect...     

A loudspeaker apparatus is disclosed herein having a sealed enclosure for housing a pair of multiple pairs of matched loudspeakers. The rear faces of the loudspeakers are effectively arranged so as to be directly exposed to each other via a tone chamber and operably coupled to be energized so as to move...     

The invention relates to a loud speaker system, and more particularly, the utilization of space to the utmost of efficiency for the reproduction of sound. The single unit of a loud speaker apparatus is most effectively mounted at the 90.degree. intersection of adjacent walls and ceiling, cater-corner...     

A loudspeaker system for vehicles wherein a monolithic, elongated element including end portions thereof constituting loudspeaker cabinets. The elongated element is preferably designed in such a way that it has a close fit against the ceiling of the vehicle in which the loudspeaker system is to be mounted,...     

A loudspeaker cabinet system wherein at least two low frequency drivers of equal effective diameters are critically spaced a vertical distance which equals the effective piston diameter of one driver times .pi.. When so placed, the respective spherical wave fronts of the drivers interfere causing a composite...     

A triaxial or four-dimensional radiant energy transducer system is embodied in an omniphonic microphone and loudspeaker system as it relates to the sound spectrum. This is a system which is capable of detecting the location and direction of a source of sound and, conversely, is capable of re-presenting...     

This invention relates to a cabinet for audio reproduction speakers of the type which have a movable speaker cone mounted within a fixed speaker frame. The cabinet includes a plurality of external cabinet members juxtaposed to form a substantially rectangular cabinet having a rectangular void therein...     

A cone speaker is mounted to a horn within a reflex chamber behind a forward opening through the chamber, and the forward end of a horn is attached to the opening. The speaker is connected in the entrance discharging rearwardly into the chamber, and forwardly into the horn. The horn includes a restriction...     

A loudspeaker enclosure is disclosed which includes a horizontal bottom wall, parallel spaced vertical front and rear walls connected with the bottom wall, the front wall containing an opening for receiving a loudspeaker, and a horizontal top wall connected with the upper edges of the front and rear...     

A speaker system employs: a baffle board in front of a cabinet made of wood, with a woofer mounted on the baffle board; and a sub-baffle board having a medium-range speaker and a tweeter mounted thereon. The sub-baffle board comprises a metal board and a damping plate such as a rubber plate laminated...     

A loud-speaker system comprising at least a loud-speaker means for high sound with a loud-speaker means for low sounds arranged substantially coaxially thereto is provided in which the loud-speaker means for high sounds is adjustably mounted to the loud-speaker means for low sounds so that the position...     

A 360 degree, in-phase audio propagation system utilizating sound propagation in conjunction with various types of active reflectors. In a first embodiment two bass speakers or woofers are mounted in an air-tight casing, the first speaker being mounted internal to the casing and facing outwardly through...     

A speaker assembly comprising a first cabinet or housing of a pyramidal configuration having a speaker element mounted therein in such a manner that the sound emitting from the speaker is concentrated in a direction outwardly of the pyramid, and a second housing of pyramidal configuration disposed in...     

An acoustic loudspeaker is mounted within a curved reflecting enclosure. Openings through the enclosure allow sound vibrations from the front of the speaker to emerge from the enclosure. A port in the enclosure, spaced away from the openings allow vibrations from the rear of the speaker to emerge from...     

An acoustic speaker system suitable for use with a home stereo system has a bass speaker, a super-tweeter speaker, a tweeter speaker and a midrange speaker. The speakers are disposed in a generally ascending arrangement with the bass speaker occupying the bottom position, the super-tweeter speaker mounted...     

A virtual sound source system comprises a pair of speaker cabinets of unique design positioned along the front wall of a listening room. The speaker cabinets together with the front wall, sidewalls and ceiling of the room provide for playing back recordings of conventional stereo sound and converting...     

A loud speaker and enclosure system that has improved acoustical properties, comprises a cubical frame composed of two sidewalls, a top and a bottom, having an open front and back. The frame is made of substantially rigid material. The backwall is closed by means of a panel of styro-foam. An acoustical...     

A device for reproducing acoustic events carried on at least two channels, in a room with at least two sidewalls, comprising, at least one first sound-radiating transducer positioned to radiate sound toward a listener with at least two second sound-radiating transducers positioned in association with...     

The invention relates to a loudspeaker housing having a front wall and a back wall and at least two similar electroacoustic transducers. Objects of the invention are to create a loudspeaker having a limited or finite housing but which makes possible a sound reproduction with a quality similar to an electroacoustic...     

The present invention is an acoustic filter for use in combination with a coaxial loudspeaker system which includes a low frequency loudspeaker and a high frequency speaker which is axially aligned with the low frequency loudspeaker. The acoustic filter includes a pair of parallel, perforated sheets...     

An exponential folded horn loudspeaker enclosure is built so that all of its components are coaxial with respect to a line that is equidistant from three cooperating surfaces, including floor or ceiling, as well as the customary two walls of a corner. Perfect symmetry with all three cooperating surfaces...     

A loudspeaker enclosure is disclosed herein having a hollow box provided with a pair of air chambers separated by a partition or baffle. Coaxial openings are incorporated into the two outer walls of the box and the inner partition. An inner and an outer passive speaker cone is disposed in each opening...     

An acoustical transducer and grille combined into a single unit. The grille is acoustically transparent and includes a plurality of wave guides separated for through-passage of sound. Situated in the midst of the grille is a mounting for the acoustical transducer. The transducer mounting has a central...     

A loudspeaker comprises a horn having an open throat from which a pair of outwardly curved side walls extend. A cone driven speaker is mounted in the horn throat, and the horn with attached speaker is mounted in a base reflex enclosure which forms a chamber therebetween. A compression driven tweeter...     

A loudspeaker is formed integrally with a rectangular ceiling tile which is provided with electrical contacts for connecting the loudspeaker in series or parallel combinations with other loudspeaker-tile assemblies and for supplying power to the loudspeaker from a bus, such as the T-bar which supports...     

A passive radiator, which may be a cone-type radiator is employed in a speaker system enclosure facing downwardly in the direction of the floor upon which the enclosure rests. The bottom wall supporting the passive radiator is preferably spaced a relatively short height above the floor by means of a...     

A sound reproduction system having a housing with a lateral slot in the front wall thereof, one or more sound reproducing speakers located below the slot, and a plurality of resonance chambers located between the speakers forming bass, treble and mid-range sections.

An improved, compact speaker system for production of the full range of sound audible to the human ear, the sound radiating from the speaker being omnidirectional with the speaker including an outer cabinet shell and a defined chamber configuration within the shell. High and low frequency speakers are...     

A speaker unit for an automotive vehicle including a woofer speaker flush mounted with the rear parcel shelf of the vehicle with a tweeter or medium- and high-range speaker unit mounted to the rear of the woofer speaker. The tweeter speaker is directed toward the passenger compartment of the vehicle....     

A free standing frame supports front, back, side, top and bottom panels in such a manner that the panels are free to move relative to each other. Speaker drivers are mounted to the front panel such that frontwave radiation therefrom is allowed to project outwardly. Rear wave radiation is, however, contained...     

An acoustic projection system in which a reproducer array disposed in a listening chamber and operating in conjunction with a signal processor coupled to right and left channels carrying stereophonic signals, acts to project sound into the chamber in a manner substantially recreating the three-dimensional...     

An enclosure for transducers incorporates an interior acoustically reflective shell. This acoustically reflective shell is shaped so that the inner surface thereof is the envelope of at least a section of a cylinder of elliptical cross section, an ellipsoid of revolution, or the envelope of a multitude...     

A speaker system comprises a main cabinet and two auxiliary speakers. The main cabinet encloses a bass speaker and includes a slot for slot-loading of the bass speaker. The auxiliary speakers have a frequency range higher than that of the bass speaker, and are in enclosures which fit within slots in...     

High fidelity combination of low-bulk bass signal reproducer with novel upper range reproducer. Bass reproducer is box whose height, width and depth are each between about 15 and about 21 inches, the interior of the box housing a pair of woofer loudspeakers in face-to-face relation, their cones being...     

A high-frequency loudspeaker has a movable diaphragm which is moved to and fro by an actuating unit. The actuating unit, under the impulses of a signal to be converted into sound waves, changes in dimension in at least two opposed directions. The diaphragm is made up of two rigid hemispherical shell...     

A mechanical two way loudspeaker includes a low frequency diaphragm arranged coaxially with one another which are driven by the same voice coil. In order to flatten the sound pressure versus frequency characteristic of the loud speaker in the high frequency range, the low frequency diaphragm is provided...     

A high fidelity loudspeaker system having at least one additional smaller speaker mounted above the largest speaker. The loudspeaker is of the type having a permanent magnet and a moving coil, and the smaller speaker or speakers are mounted on a support member which passes through the moving coil of...     

A multi-driver loudspeaker assembly having high and low frequency transducers in which the high frequency transducer(s) is directly coupled to the diaphragm of the low frequency transducer and is movable therewith.

The disclosure relates to an audio signal reproduction system having one or more of the following features: (1) a loudspeaker having (a) a flat frequency response and (b) a predetermined power response; (2) two loudspeakers adapted to be positioned relative to one another so that they reproduce a stereophonic...     

A stereo sound system for reproducing signals from two independent channels through right and left speakers. The two speakers are centrally located and propagate a lesser part of their acoustic output directly into free space. Two acoustic tunnels separately couple the major part of the outputs of the...     

A coaxial type composite loudspeaker has at least three coaxially arranged loudspeakers of different opening diameters and different allocated frequency bands. This composite loudspeaker can reduce the synergistic interference among the component loudspeakers to prevent deterioration of the characteristics...     

A multi-driver loudspeaker combination includes a first transducer of the dynamic radiator type, designed to reproduce sound in the lower portion of the audio frequency range. The radiator of the first transducer includes a diaphragm. The combination also includes a second transducer designed to reproduce...     

A high mass speaker enclosure having a speaker mounted to a front escutcheon plate and below which a multi-gated balanced acoustical transmission yoke is mounted and whereby a portion of the enclosure's interior air pressure is relieved so as to augment the speaker sound, especially at frequencies below...     

A speaker unit intended for mounting on the rear deck panel of a hatchback automobile which provides easy mounting of two speakers with a fixed predetermined distance therebetween. The two speakers are fixed to a front grille which covers their front portions but which does not extend sufficiently high...     

A parabolic speaker system is provided and consists of a cabinet that has a front grille and a parabolic rear reflecting surface. Inverted woofer, midrange and tweeter speakers are mounted within said cabinet so that sounds would be reflected back to a listener at a wider and fuller range.

An improved multidriver loudspeaker includes a low frequency driver having an elongated voice coil former terminating in an inverted speaker cone and a high frequency driver located along the voice coil former. The voice coil former is formed such that the virtual or apparent acoustical source of the...     

A loudspeaker enclosure is arranged to support an electromagnetic loudspeaker of the type having both front and back acoustic waves, with the front of the speaker registering with a front wave opening in the enclosure and the back of the speaker communicating through a transmission line cavity with a...     

A car speaker system which can be used to radiate sound either inside the vehicle in normal driving use or outside the vehicle when the vehicle is parked. A plurality of speaker units are mounted in a closed cabinet and the cabinet is swingably mounted along one side thereof in a casing. In a first swinging...     

High fidelity combination of low-bulk bass signal reproducer with novel upper range reproducer. Bass reproducer is box whose height, width and depth are each between about 15 and about 21 inches, the bottom of the box being essentially open and fitted with spaced feet on which the box can stand on a...     

A loudspeaker system includes a cabinet with top, bottom, front, rear and side panels enclosing a volume with the top and bottom panels extending to one side of the enclosed volume and supporting an angled tweeter baffle therebetween that supports a tweeter that radiates rearward and outward from its...     

The present invention relates to a grill comprising one or more acoustic shells to be used in combination with conventional acoustic speakers. The speaker grill of the present invention in it simplest form is an acoustic shell which serves to focus the acoustic emissions generated by the speaker. In...     

A multiple driver manifold for coupling four high frequency drivers to a single horn. Two drivers are mounted in a "Y" or "skewed" configuration, and two additional drivers are mounted so as to be directly opposed to one another along a line perpendicular to both the horn throat on-axis direction and...     

Electronic outdoor warning siren systems which include a plurality of speakers arranged in one or more vertically spaced circular arrays of circumferentially spaced vertically oriented speakers to achieve substantially uniform coverage in all radial directions in a horizontal plane, and utilizing frequency...     

The application describes a "jellyfish" acoustic array. The array is housed in a cable suspended container with an open bottom. A series of individual transducer elements are stacked inside the container, and may be deployed in a column hanging from the container. Spacer cables join adjacent transducer...     

A resin-molded wall-mounted speaker cabinet which has a reduced thickness and weight. The four side walls of the cabinet are inclined inwardly towards the back of the cabinet, and a terminal plate is mounted on one of the side walls. A baffle board is fitted into a front opening in the body of the cabinet,...     

A loudspeaker cabinet which has an open top and an open back which is defined by three in number of panels which are connected together. There is a front panel interposed between a pair of side panels with the side panels being angularly disposed relative to the front panel so that the rear edges of...     

A microphone system comprising a pair of microphone capsules, a pair of planar barriers positioned at an angle to each other, with each microphone capsule secured to the center portion of a barrier positioned between the microphone capsules. A baffle is positioned between the microphones with the sidewalls...     

High quality single or multiple channel sound dispersal is obtained through the arrangement of a plurality of similar speakers divergently mounted in an airtight frame with integral horns formed therein such that the central axis of each speaker is coaxial with a line normal to and projected from the...     

A singular configuration for a high fidelity sound speaker enclosure is disclosed. This acoustical structure is formed in two joined sections: the upper section which generally forms a four sided truncated pyramid and the lower section which generally forms an inverted four sided truncated pyramid. The...     

An ultrasonic rangefinder capable of detecting a distance between a vehicle and an object with high accuracy is shown. The measurements for microphones for transmitting and receiving ultrasonic waves are chosen so that detour waves are restricted.

A loudspeaker enclosure is configured in trapezoidal shape, with one angular end wall supporting an electromagnetic or electrostatic loudspeaker of the type having both front and back acoustic waves, with the front of the loudspeaker registering with a front wave opening in the angular end wall and the...     

A simulated rock speaker cabinet in the form of a natural rock has build-up portions of modeling clay which include a pattern of small diameter holes to form speaker grills at longitudinally spaced positions. A chicken wire ring provides structural reinforcement to the speaker cabinet. The artificial...     

A hermetically sealed speaker enclosure assembled from pieces that can be shipped economically in compact knocked-down condition. The mating surfaces at the edges and margins of the assembled pieces are hermetically sealed by gaskets clamped therebetween. Some of the gaskets can be in the form of bands...     

A reverberating platform structure usable as an exercise floor or, depending upon the configuration thereof, for the support of people or objects thereon wherein the platform is supported by an anchor structure above a foundation such that there is an open space between the foundation and the undersurface...     

Coiled Exponential Bass Midrange Horn Loudspeakers which are each characterized by a rigid cabinet of selected size having a sealed air chamber in the base thereof for receiving a low frequency speaker, or driver, and a coiled or convoluted, exponentially flared sound passage extending from the air chamber...     

A planar loudspeaker system having an elongated and substantially planar enclosure, configured to house tweeter, midrange, and a pair of upper and lower woofer diaphragms in its median, longitudinal section. A pair of woofer labyrinths, acting as quarter-wave transmission lines, extends throughout the...     

The outdoor alerting and warning device of this invention comprises numerous electronic drivers and an axially shallow drum-shaped resonance chamber having an inside diameter equal to a whole-number multiple of one-quarter of the wavelength of a sound wave of predetermined frequency. The drivers are...     

A speaker enclosure characterized by a curved back wall and top and bottom planar surface members which together define a front opening. A speaker member, a horn member and a tweeter member are adapted to be mounted within the front opening. At least the curved back wall is made from wood of a specified...     

An improved outdoor warning siren comprising an electromechanical siren together with a multi-segment horn which effects an exceptionally smooth transition from a small high pressure area at the horn inlet to a larger low pressure area at the horn outlet thereby producing increased sound output with...     

One or more up-firing woofer loudspeakers (12 or 22) are mounted atop a truncated pyramidal enclosure (1 or 21). A down-firing tweeter (5 or 25) is aligned above the woofer. A sound-reflecting sphere (4 or 24) is disposed between the woofer and the tweeter. When the sphere is aligned there-between omni-directional...     

A loudspeaker having means for acoustically impeding excursion of the transducer diaphragm and means for acoustically attenuating the output of acoustic vibrations of frequencies above a preselected frequency. The loudspeaker includes first and second subchambers separated by a dividing wall in which...     

A coaxial-type multi-speaker system is provided for use in automobiles which includes a low frequency transducer, a high frequency transducer, and a cover of elongated substantially half-cylindrical periphery open at the two oppositely disposed lengthwise terminating ends. Inside the cover there are...     

An omnidirectional sound emitter with separate sound sources (1, 2), each comprising a funnel-shaped horn (4), is characterized in that the sound sources (1, 2) are mutually arranged such that the acoustic main axes (6) of the horns (4) lie in essentially one and the same plane (7) and the sound-emitting...     

A loudspeaker (10) has speaker mounting walls (11 and 12) joined at an apex angle (15) of 70.degree. or less, with a pair of tweeters (20) mounted as close to the apex as possible and a pair of woofers (25), arranged below the tweeters, and also mounted as close to the apex as possible. The width spanned...     

An omnidirectional speaker unit includes a housing having a plurality of twelve identical sides each having a speaker mounted therein and equally spaced around and directed outward from a common point with all speakers connected to operate in unison to provide a spherical dispersal of sound. A preferred...     

An electro-acoustic transducer is formed of a loudspeaker enclosure having a form of revolution about an axis each end of which is closed by a loudspeaker. The two loudspeakers are mounted back to back in the axis of the enclosure, one of the loudspeakers being fed from an electric power source and being...     

A loudspeaker with a pair of speaker units and a manifold chamber between the speaker units for combining the sound from both speaker units. The manifold chamber is formed by walls having an exit opening and a pair of rectangular apertures, the apertures confronting each other on opposite sides of the...     

A low-profile modular sound system comprises a completely self contained high fidelity speaker system which may be easily installed in the supporting gridwork for a suspended ceiling in place of a conventional acoustic ceiling tile. Each of a pair of speakers, including a woofer and tweeter, is installed...     

A speaker system mounted on a rear portion of a vehicle compartment. The speaker system has an elongated cabinet extending in horizontal direction, and an elongated buffle plate coupled to a front open end of the cabinet for providing a cabinet chamber. Within the chamber, a woofer speaker is provided....     

A mobile speaker system for mounting on a rear parcel tray attachment portion of a vehicle, the speaker system includes: a bottom casing elongated along a vehicle's width; an upper casing mounted over the elongated bottom casing so as to form a speaker cabinet, the bottom casing having a plurality of...     

Transducer apparatus includes a two-part housing having a rear boss for securing the transducer to a wall. Within the housing are two magnetic elements for providing an output in response to electrical input signals, and the output is transmitted to the wall through the housing and rear boss. The magnetic...     

A headphone having a dual element speaker unit including a face plate having an opening generally centrally located therein. A case coupler is mounted in the opening, and has an annular projection protruding through the opening. A first dynamic transducer is mounted within that annular projection. A...     

A grille is attached to a woofer, and a tweeter is further mounted on the grille to mutually face the woofer and be at least partially disposed in a cavity defined by the woofer and grille to define a compact loudspeaker structure. The grille and a back of the tweeter face an environment to which sound...     

A body-sensible acoustic device and an electromechanical vibration converter for use in the same. The body-sensible acoustic device includes frames forming the structure of a chair having a seat and a back, canvas members spread on the frame, and driver units driven by low-frequency audio signals for...     

The invention relates to a loudspeaker arrangement in which, in front of the loudspeaker (5) or another sound source, when viewed in the direction of the sound projection, two, preferably plane, sound guide surfaces (2,3) are disposed which, in a bow-like manner, are inclined towards one another at an...     

A speaker system comprises a pair of speakers for a higher frequency range and a pair of speakers for a lower frequency range. The speakers for the lower range are disposed with a space d.sub.1 equal to the wavelength .lambda..sub.c of a division frequency f.sub.c of a reproduction frequency range, and...     

A speaker grille is arranged to have screw seats projected toward a mount opening in a rear parcel tray of a vehicle, and a skirt portion for contacting a surface of the rear parcel tray at a predetermined distance spaced from the mount opening. A holder plate has a fitting projection portion for fitting...     

An improved flat sound transducer including a planar diaphragm having at least one region suited for reproduction of low frequencies and one region suited for reproduction of high frequencies wherein the frame of the flat sound transducer is used to sandwich a foam strip between the frame and the diaphragm...     

A loudspeaker enclosure accommodates at least one speaker in the front wall of the enclosure. The interior of the enclosure is divided into two smaller chambers by means of a partition inclined with respect to the front and rear walls. One such chamber is adjacent to the speaker, while the second or...     

A loudspeaker system has an enclosure with a baffle dividing the interior into first and second subchambers. The smaller subchamber is directly coupled to the region outside the enclosure by a port tube. The larger subchamber is coupled to the region outside the enclosure via the smaller subchamber by...     

A public address system which consists of a longitudinal tubular member extending through an area serviced by the system, with a longitudinal opening and having a plurality of speakers spaced at regular intervals. The audio signals generated from the speakers are emitted through the opening in any direction...     

A speaker apparatus in which a speaker unit having a vibrating plate thereon is housed in a cabinet, an opening defined by the cabinet for radiating a sound generated at a front surface of the vibrating plate of the speaker unit is formed, and a shield plate over a predetermined part of the opening is...