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| Number | Title | Issue Date |
| 5187333 | Coiled exponential bass/midrange/high frequency horn loudspeaker Coiled exponential bass/midrange/high frequency horn loudspeakers which are 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, a coiled or convoluted, exponen... | 02/16/1993 |
| 5181301 | Method of making a very compact audio warning system A vehicle warning system (1) is disclosed. The device includes a main housing (2) to which is attached a sound generator (7), a lighting system (4), a mounting bracket (4) which is used to attach the device to an emergency vehicle, and a trim ring (6) whi... | 01/26/1993 |
| 5163167 | Sound wave guide A wave guide fitted at the output of a loudspeaker, in front of the membrane or in front of the orifice of a compression chamber, along the axis of the transducer being considered, and comprising a conduit which expands from its input to its output. The a... | 11/10/1992 |
| 5123500 | Loudspeaker enclosure A loudspeaker enclosure is formed generally in the shape of a tetrahedron, having a triangular bottom panel and three upstanding triangular side panels. In a first embodiment, the lower edges of the three side panels are connected to the three edges of th... | 06/23/1992 |
| 5115883 | Loudspeaker A horn shaped baffle is provided in the front of a loudspeaker. Escape holes are formed in the horn shaped baffle so as to emit sound waves deviated from the axis of the loudspeaker. A sound absorptive panel is provided on the outside of the baffle so as ... | 05/26/1992 |
| 5111905 | Speaker enclosure A loudspeaker enclosure accommodates at least one speaker in the front wall of the enclosure. The interior of the enclosure is divided into at least two smaller chambers by means of a partition inclined with respect to the front and rear walls. One such c... | 05/12/1992 |
| 5103482 | Apparatus and method for reproducing high fidelity sound A horn-equipped loudspeaker is provided which has an electro-acoustic transducer to convert electrical signals into acoustical signals, a coil with input terminals for receiving the electrical signals and at least one movable diaphragm for the emission of... | 04/07/1992 |
| 5099948 | Compact woofer speaker system A subcompact woofer speaker cabinet system provides high volume low frequency response, long speaker life without overload and sound projection over considerable distances. This is achieved by mounting a damped speaker diaphragm within a cabinet enclosure... | 03/31/1992 |
| 5078074 | Vehicle horn A vehicle horn has a shield which covers the mouth of the horn's bell to prevent debris from entering the bell. A front sound opening beyond the bell mouth perimeter allows sound to project forwards while still protecting the bell and a rear sound opening... | 01/07/1992 |
| 5046581 | Loudspeaker system A speaker system includes at least one horn-type speaker. The horn-type speaker is provided with an acoustic waveguide between the driver and horn to space the driver a selected distance from the mouth of the horn.... | 09/10/1991 |
| 5012889 | Speaker enclosure 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... | 05/07/1991 |
| 5000286 | Modular loudspeaker system A modular loudspeaker system of uniformly sized and shaped loudspeaker modules permits hanging of a plurality of the modules in a wide variety of desired configurations. Each module has a pair of side walls with recessed upper and lower marginal edge port... | 03/19/1991 |
| 4969196 | Speaker and horn array A speaker and horn array having improved audio characteristics is formed in a baffle case. A plurality of small speakers are mounted in the baffle case in a vertical array in close proximity with one another. Each of the speakers has an acoustic baffle ov... | 11/06/1990 |
| 4965837 | Environmentally resistant loudspeaker 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 o... | 10/23/1990 |
| 4930596 | Loudspeaker system A loudspeaker system which comprises a loudspeaker unit for radiating a first sound, a horn unit having a throat coupled to the back of the loudspeaker for radiating a second sound, and an acoustic filter provided in the horn for causing an acoustic imped... | 06/05/1990 |
| 4923031 | High output loudspeaker system 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 ... | 05/08/1990 |
| 4908601 | Loud speaker with horizontal radiation pattern A siren having one or more stacked speakers, each speaker having a substantially circular lower horn member having an upwardly facing surface including a substantially convex annular portion and a substantially concave central cavity portion. A substantia... | 03/13/1990 |
| 4893695 | Speaker system A speaker system which has a speaker unit with a diaphragm and an acoustic path provided on the front side of the diaphragm so as to guide sound waves emitted from the diaphragm. The acoustic path is defined by a sound absorbing member. The space in the a... | 01/16/1990 |
| 4893343 | Dual diverging manifold loudspeaker system A dual diverging manifold loudspeaker system includes a generally cubically-shaped outer horn housing and an inner dome-like cap member for encapsulating therebetween a compression driver assembly. The loudspeaker system includes a back plate member which... | 01/09/1990 |
| 4890689 | Omnidirectional speaker system 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 pr... | 01/02/1990 |
| 4889208 | Speaker enclosures A speaker enclosure assembly is disclosed, which comprises an enclosure provided with a baffle plate, to which a speaker unit is attached, characterized in that the enclosure is provided with a bellows-like sound pressure buffer member.... | 12/26/1989 |
| 4862508 | Method for large-scale multiple source sound reinforcement An improved method for transmitting sound at high power levels over a wide angle zone of dispersion without distortion, comprising the step of emitting sound waves from a plurality of individual sources, each characterized by a relatively narrow, wedge-sh... | 08/29/1989 |
| 4860367 | Low frequency loud speaker A low frequency loud speaker is disclosed for use in a room at the intersection of two, mutually perpendicular planes, such as a ceiling and a wall, a floor and a wall or two walls. The speaker has a back air chamber within which an electrically-driven di... | 08/22/1989 |
| 4853964 | Electroacoustic apparatus for reproducing lowest to medium frequencies Electroacoustic apparatus for reproducing lowest to medium frequencies being provided with a housing wherein a folded exponential horn combined with a loudspeaker is defined having five horn element walls lengthening the horn with good exponential form to... | 08/01/1989 |
| 4850452 | Loudspeaker structure 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 tweete... | 07/25/1989 |
| 4836327 | Sound reinforcement enclosure employing cone loudspeaker with annular central loading member and coaxially mounted compression driver An improved sound reinforcement enclosure is disclosed which incorporates a cone-type loudspeaker operating into a generally cylindrical channel extending from the perimeter of the cone to free air. A central member is coaxially mounted within this channe... | 06/06/1989 |
| 4811403 | Ultralight loudspeaker enclosures A loudspeaker and enclosure assembly, comprising: a load bearing member exhibiting good thermal conductivity; at least one loudspeaker mounted on the load bearing member and in thermal engagement therewith; and, an enclosure having walls formed of rigid l... | 03/07/1989 |
| 4807293 | Loudspeaker housing The invention concerns a loudspeaker housing (1), particularly for rendition of the deep and middle tone ranges, having a loudspeaker (27) and a folded flare (14; 20, 21, 15, 16; 6). The front side of this loudspeaker housing (1) has an upper area, in whi... | 02/21/1989 |
| 4790408 | Coiled exponential bass/midrange horn loudspeakers 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... | 12/13/1988 |
| 4776428 | Sound projection system A sound projection system for use in diffusing sound of a frequency ranging from 160 Hz up to 5 KHz over a relatively long distance with a substantially constant distribution of the sound over a wide diffusion angle, whereby the quality and intensity of t... | 10/11/1988 |
| 4739860 | Ultrasonic rangefinder 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.... | 04/26/1988 |
| 4733749 | High output loudspeaker for low frequency reproduction A loudspeaker system for low frequencies has a manifold chamber into which oppositely mounted and aligned woofer units radiate sound. The chamber radiates the sound perpendicularly to the woofer axes, either directly into space or into a horn. An addition... | 03/29/1988 |
| 4673057 | Geometrical transducer arrangements 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 coaxia... | 06/16/1987 |
| 4650031 | Cabinet for loudspeaker A cabinet for a loudspeaker is disclosed, which has a duct communicating the inside and outside of the cabinet. The duct includes a first duct section open to the inside of the cabinet and having a substantially constant sectional area and a second duct s... | 03/17/1987 |
| 4635749 | Speaker enclosure A loudspeaker horn having side wall members which converge to a throat and then diverge at a controlled horizontal dispersion angle allows horizontal dispersion from a bass driver to be maintained up to 4 KHz, permitting higher crossover frequencies and t... | 01/13/1987 |
| 4635748 | Speaker cabinet having interactive speakers A speaker cabinet of the type used in stereo systems. A horizontal wall partitions the interior of the cabinet into an upper portion within which is positioned a full range speaker member, and a lower portion within which is positioned a low range speaker... | 01/13/1987 |
| 4629029 | Multiple driver manifold 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... | 12/16/1986 |
| 4592444 | Low frequency speaker enclosure This invention relates to low-frequency speaker enclosures in general, and more specifically to dual cabinet construction, wherein each of the cabinet structures contains a portion of a pre-formed generally semi-circular variable diameter horn passageway,... | 06/03/1986 |
| 4558762 | Loudspeaker A loudspeaker is provided for high-quality stereophonic loudspeaker systems intended to be positioned on the floor close to a vertical wall of a room. The aim is to reduce distortion due to that part of the reflected sound which arrives from substantially... | 12/17/1985 |
| 4524846 | Loudspeaker system A loudspeaker system has an elliptical stepped mid-range horn above and coplanar with a flared mid-bass horn having disposed therein a pair of tweeters on sidewalls thereof and a woofer in a backwall thereof. The back of the woofer communicates with a fol... | 06/25/1985 |
