US3143182A - Sound reproducers - Google Patents
Sound reproducers Download PDFInfo
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- US3143182A US3143182A US124584A US12458461A US3143182A US 3143182 A US3143182 A US 3143182A US 124584 A US124584 A US 124584A US 12458461 A US12458461 A US 12458461A US 3143182 A US3143182 A US 3143182A
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- mounting board
- sound
- coupled
- chamber
- coil
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- 238000010168 coupling process Methods 0.000 claims description 4
- 238000005859 coupling reaction Methods 0.000 claims description 4
- 230000009471 action Effects 0.000 description 4
- 239000004744 fabric Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 3
- 239000002023 wood Substances 0.000 description 3
- 208000023514 Barrett esophagus Diseases 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000005426 magnetic field effect Effects 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
- H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only
- H04R1/28—Transducer mountings or enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means
- H04R1/2807—Enclosures comprising vibrating or resonating arrangements
- H04R1/2811—Enclosures comprising vibrating or resonating arrangements for loudspeaker transducers
Definitions
- This invention pertains generally to sound reproducers and particularly to a loudspeaker having a plurality of cavities and a plurality of sound reproducing surfaces.
- a further object of the present invention is to provide a sound reproducing unit having a plurality of cavities comprised of a plurality of sound reproducing surfaces which are driven by a single driver unit to achieve greater dynamic range with wide frequency response of high quality definition.
- Still another object of the present invention is to provide a sound reproducing unit which incorporates principles heretofore adapted solely to string musical instruments.
- Yet another object of the present invention is to provide a sound reproducing unit having a plurality of sound producing surfaces wherein sound vibrations are achieved by direct action on the wood surfaces, such surfaces having a plurality of bridging posts, a sounding post and further utilizing indirect action of air in the cavities on the wood surfaces.
- FIGURE 1 is a perspective view of a sound reproducing unit incorporating the present invention
- FIGURE 2 is an enlarged cross-sectional plan view of the cavities and sound producing surfaces of the unit shown in FIGURE 1, taken alng line 2-2 thereof;
- FIGURE 3 is a partially broken away cross-sectional elevational view taken along line 33 of FIGURE 2.
- the invention comprises a sound reproducing unit which encompasses the sound reproducing functions of a string musical instrument such as a cello or violin wherein a plurality of sound reproducing surfaces are combined with a sound resonating chamber to which sound vibrations are imparted by an integrated driving mechanism.
- a box chamber is provided which is enclosed on the sides and back and slotted on the front.
- a plate is suspended in front of the box chamber at a selected distance by a plurality of bridging posts, thereby creating an outer cavity.
- the plate constitutes an outer sound reproducing surface which is coupled to the front of the box chamber by bridging posts, and to the back of the box chamber by a sounding post. Sound vibrations are induced upon all of the surfaces and within the cavities by a driving mechanism 46.
- Such driving mechanism 46 becomes an integral part of the outer plate and 3,143,182 Patented Aug. 4, 1964 the front of the box chamber so that the outer plate works against the front of the box chamber to vibrate the front and outer plates through an opposing magnetic field effect. Sound vibration is also conducted to the surfaces between the outer plate and the front plate of the box chamber by the bridging posts, and between the outer plate and the back of the box chamber by the sounding posts.
- FIGURE 1 is a perspective view of the sound reproducer wherein the invention is incorporated.
- Upper panel 10 is disposed from lower panel 12 by side panels 14 and 16 with grille cloth 18 providing a cover for the front of the cabinet.
- FIGURE 2 shows a cross-sectional plan view of the cabinet taken along line 22 of FIGURE 1.
- the exterior of the sound reproducer is a cabinet comprised of side panels 14 and 16, rear panel or cover 20, and grille cloth 18.
- Grille frame 22 is mounted to base 12 by fasteners 24, 26, 28, and 30.
- Support member 25 provides additional support for the grille cloth 18.
- Grille mount uprights 32 and 34 also provide support and mounting means for grille cloth 18.
- Suitable fastening means such as screws (not shown) may be used to couple uprights 32 and 34 to side panels 14 and 16.
- uprights 36 and 38 are used for positioning coil mounting board 40 and uprights 36 and 38 and also be coupled to the side panels 14 and 16 by suitable fastening means such as screws.
- Coil mounting board 40 has a central aperture 42 in which may be positioned a coil 44 which is part of a conventional speaker arrangement including a cone 46 coupled thereto.
- a front mounting board 48 or plate may have a substantially circular aperture 50 therein with the edge of cone 46 coupled thereto.
- the aperture 50 in mounting board 48 is not essential but such aperture permits easier mounting of cone 46.
- Front mounting board 48 is coupled to the coil mounting board 40 by a plurality of bridging or mounting posts 52. As may be seen more readily in the cross-sectional view of FIGURE 3, mounting posts 52 are mounted in a substantially circular configuration but eccentric to the aperture 50 in front mounting board 48. During movement of cone 46, front mounting board 48 and coil mounting board 40 tend to oppose the movement of each other.
- coil mounting board 40 has apertures 58 and 54 therein which are elongated in a vertical plane. Disposed intermediate the front mounting board 48 and back cover 20 is a sounding post 56 which passes through aperture 58 in coil mounting board 40. As shown in FIGURE 3, sounding post 56 is positioned near the lower edge of aperture 58.
- the sound reproducer of the present invention provides an acoustical effect in the transmission of sound similar to the effect obtained with a string musical instrument such as a Violin or cello through utilization of dual cavities created by three wooden surfaces or by other similar type surfaces.
- a string musical instrument such as a Violin or cello
- Bridge posts 52 impart vibration to the coil mounting board 40 and sounding post 56 imparts vibration to back cover 20 so that sound is developed which is a faithful reproduction of the original sound.
- the cavity system and opposing magnetic field arrangement utilized in the present invention eliminates the need for a plurality of loudspeakers which heretofore may have been mounted in a plurality of cabinets.
- a sound reproducer having an upper panel, a lower panel, first ands econd side panels, and a back panel coupled to said upper, lower, and said side panels to provide a chamber having afront portion and aback portion, a coil mounting board having a plurality of apertures therein and disposed in the chamber away from said back panel, driving means positioned in one of the apertures of said coil mounting board, a front mounting board adapted for coupling to said driving means in the front portion of the chamberpbr idge means coupled to said front mounting board and to said coil mounting board, and a sounding post coupled to said front mounting board and to, said back panel through an aperture in said coil mounting board, said driving means causing vibration of said front mounting board with lower frequency vibrations being transmitted through said sounding post to. said back panel to provide resonance within the chamber.
- apertures of said coil mounting board include a central aperture substantially circular in configuration and first and second vertically elongated apertures which are near said first and second side panels respectively.
- a sound producing apparatus including in combination upper and lower panels,
- first and second sides coupled to each of said upper and lower panels, 1
- front and rear panels coupled to said first and second sides and to said upper and lower panels to form a chamber
- first mounting member coupled to said first and second sides in spaced relation to said rear panel, said first mounting member having a plurality of openings therein with one of said openings adapted for receiving driving means
- coupling means for coupling said second mounting member to said first mounting member
Description
Aug- 1954 G. D. SEARS ETAL SOUND REPRODUCERS Filed July 17. 1961 Gore/0 Z7. Jeers Pa/r/ck M Ju///v0/7 INV EN TOR-S s "A, \lnh.
United States Patent 3,143,182 SOUND REPRODUCERS Garold l). Sears, 5634 Eskridge, and Patrick M. Sullivan, 3755 Gramercy, both of Houston 25, Tex., assignors of one-third to E. J. Masher and one-third to Harry J. ,Mosser, both of Houston, Tex.
Filed July 17, 1961, Ser. No. 124,584 Claims. (Cl. 181-31) This invention pertains generally to sound reproducers and particularly to a loudspeaker having a plurality of cavities and a plurality of sound reproducing surfaces.
During the past several years, as greater emphasis has been placed upon new and improved high fidelity sound systems, correspondingly increased activity in the design and arrangement of sound reproducers such as loudspeakers has occurred. During the various experimentations and adaptations of loudspeakers and loudspeaker cabinets, there has developed a tendency to use a plurality of speaker cabinets and speaker cones to achieve proper frequency response in the range of audible frequencies. Such plurality of speaker cabinets and speaker cones has resulted in increased cost and complication of the overall sound system. Also present sound reproducing systems have become quite cumbersome and bulky in addition to being expensive while lacking in true high fidelity reproduction of the original sound.
Thus, it is an object of the present invention to provide an improved sound reproducing unit which comprises, in its entirety, a loudspeaker.
A further object of the present invention is to provide a sound reproducing unit having a plurality of cavities comprised of a plurality of sound reproducing surfaces which are driven by a single driver unit to achieve greater dynamic range with wide frequency response of high quality definition.
Still another object of the present invention is to provide a sound reproducing unit which incorporates principles heretofore adapted solely to string musical instruments.
Yet another object of the present invention is to provide a sound reproducing unit having a plurality of sound producing surfaces wherein sound vibrations are achieved by direct action on the wood surfaces, such surfaces having a plurality of bridging posts, a sounding post and further utilizing indirect action of air in the cavities on the wood surfaces.
In the drawing, FIGURE 1 is a perspective view of a sound reproducing unit incorporating the present invention;
FIGURE 2 is an enlarged cross-sectional plan view of the cavities and sound producing surfaces of the unit shown in FIGURE 1, taken alng line 2-2 thereof; and
FIGURE 3 is a partially broken away cross-sectional elevational view taken along line 33 of FIGURE 2.
Briefly stated, the invention comprises a sound reproducing unit which encompasses the sound reproducing functions of a string musical instrument such as a cello or violin wherein a plurality of sound reproducing surfaces are combined with a sound resonating chamber to which sound vibrations are imparted by an integrated driving mechanism. A box chamber is provided which is enclosed on the sides and back and slotted on the front. A plate is suspended in front of the box chamber at a selected distance by a plurality of bridging posts, thereby creating an outer cavity. The plate constitutes an outer sound reproducing surface which is coupled to the front of the box chamber by bridging posts, and to the back of the box chamber by a sounding post. Sound vibrations are induced upon all of the surfaces and within the cavities by a driving mechanism 46. Such driving mechanism 46 becomes an integral part of the outer plate and 3,143,182 Patented Aug. 4, 1964 the front of the box chamber so that the outer plate works against the front of the box chamber to vibrate the front and outer plates through an opposing magnetic field effect. Sound vibration is also conducted to the surfaces between the outer plate and the front plate of the box chamber by the bridging posts, and between the outer plate and the back of the box chamber by the sounding posts.
Referring now to the drawing figures in detail, FIGURE 1 is a perspective view of the sound reproducer wherein the invention is incorporated. Upper panel 10 is disposed from lower panel 12 by side panels 14 and 16 with grille cloth 18 providing a cover for the front of the cabinet.
FIGURE 2 shows a cross-sectional plan view of the cabinet taken along line 22 of FIGURE 1. The exterior of the sound reproducer is a cabinet comprised of side panels 14 and 16, rear panel or cover 20, and grille cloth 18. Grille frame 22 is mounted to base 12 by fasteners 24, 26, 28, and 30. Support member 25 provides additional support for the grille cloth 18. Grille mount uprights 32 and 34 also provide support and mounting means for grille cloth 18. Suitable fastening means such as screws (not shown) may be used to couple uprights 32 and 34 to side panels 14 and 16. Similarly, uprights 36 and 38 are used for positioning coil mounting board 40 and uprights 36 and 38 and also be coupled to the side panels 14 and 16 by suitable fastening means such as screws.
Referring again to FIGURE 2, coil mounting board 40 has apertures 58 and 54 therein which are elongated in a vertical plane. Disposed intermediate the front mounting board 48 and back cover 20 is a sounding post 56 which passes through aperture 58 in coil mounting board 40. As shown in FIGURE 3, sounding post 56 is positioned near the lower edge of aperture 58.
As pointed out previously, the sound reproducer of the present invention provides an acoustical effect in the transmission of sound similar to the effect obtained with a string musical instrument such as a Violin or cello through utilization of dual cavities created by three wooden surfaces or by other similar type surfaces. Thus, as cone 46 is driven in a conventional manner by the speaker coil 44, vibration is imparted by direct action on the wood surface of front mounting board 48 and by an opposing action of the coil 44 acting upon coil mounting board 40, and front mounting board 48. Bridge posts 52 impart vibration to the coil mounting board 40 and sounding post 56 imparts vibration to back cover 20 so that sound is developed which is a faithful reproduction of the original sound. The cavity system and opposing magnetic field arrangement utilized in the present invention eliminates the need for a plurality of loudspeakers which heretofore may have been mounted in a plurality of cabinets.
Although a preferred embodiment of the invention has been shown and described, the invention is defined by the following claims.
We claim:
1. A sound reproducer having an upper panel, a lower panel, first ands econd side panels, and a back panel coupled to said upper, lower, and said side panels to provide a chamber having afront portion and aback portion, a coil mounting board having a plurality of apertures therein and disposed in the chamber away from said back panel, driving means positioned in one of the apertures of said coil mounting board, a front mounting board adapted for coupling to said driving means in the front portion of the chamberpbr idge means coupled to said front mounting board and to said coil mounting board, and a sounding post coupled to said front mounting board and to, said back panel through an aperture in said coil mounting board, said driving means causing vibration of said front mounting board with lower frequency vibrations being transmitted through said sounding post to. said back panel to provide resonance within the chamber.
2. A sound reproducer defined by claim 1 wherein the apertures of said coil mounting board include a central aperture substantially circular in configuration and first and second vertically elongated apertures which are near said first and second side panels respectively.
3. A sound reproducer defined by claim 2 wherein the aperture in said front mounting board is substantially circular in figuration and concentric to the central aperture in said coil mounting board.
, .4. A sound producing apparatus including in combination upper and lower panels,
first and second sides coupled to each of said upper and lower panels, 1
front and rear panels coupled to said first and second sides and to said upper and lower panels to form a chamber,
a first mounting member coupled to said first and second sides in spaced relation to said rear panel, said first mounting member having a plurality of openings therein with one of said openings adapted for receiving driving means,
a second mounting member disposed intermediate said first mounting member and said front panel, said second mounting member having a smaller surface area than said first mounting member,
coupling means for coupling said second mounting member to said first mounting member, and
sounding post means coupled between said second mounting member and said rear panel while passing through one of said plurality of openings in said first mounting member whereby said first mounting member vibrates in accordance with vibrations caused when driving means are coupled inone of said plu References Cited in the file of this patent UNITED STATES PATENTS 2,566,422 Manley Q. Sept. 4, 1951 2,820,526 'Tavares Jan. 21, 1958 2,839,150 Perlman June 17, 1958 3,076,520 Farwell Feb. 5, 1963 3,080,785 Evans Mar. 12, 1963
Claims (1)
1. A SOUND REPRODUCER HAVING AN UPPER PANEL, A LOWER PANEL, FIRST AND SECOND SIDE PANELS, AND A BACK PANEL COUPLED TO SAID UPPER, LOWER, AND SAID SIDE PANELS TO PROVIDE A CHAMBER HAVING A FRONT PORTION AND A BACK PORTION, A COIL MOUNTING BOARD HAVING A PLURALITY OF APERTURES THEREIN AND DISPOSED IN THE CHAMBER AWAY FROM SAID BACK PANEL, DRIVING MEANS POSITIONED IN ONE OF THE APERTURES OF SAID COIL MOUNTING BOARD, A FRONT MOUNTING BOARD ADAPTED FOR COUPLING TO SAID DRIVING MEANS IN THE FRONT PORTION OF THE CHAMBER, BRIDGE MEANS COUPLED TO SAID FRONT MOUNTING BOARD AND TO SAID COIL MOUNTING BOARD, AND A SOUNDING POST COUPLED TO SAID FRONT MOUNTING BOARD AND TO SAID BACK PANEL THROUGH AN APERTURE IN SAID COIL MOUNTING BOARD, SAID DRIVING MEANS CAUSING VIBRATION OF SAID FRONT MOUNTING BOARD WITH LOWER FREQUENCY VIBRATIONS BEING TRANSMITTED THROUGH SAID SOUNDING POST TO SAID BACK PANEL TO PROVIDE RESONANCE WITHIN THE CHAMBER.
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US124584A US3143182A (en) | 1961-07-17 | 1961-07-17 | Sound reproducers |
Applications Claiming Priority (1)
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US124584A US3143182A (en) | 1961-07-17 | 1961-07-17 | Sound reproducers |
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US3143182A true US3143182A (en) | 1964-08-04 |
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US124584A Expired - Lifetime US3143182A (en) | 1961-07-17 | 1961-07-17 | Sound reproducers |
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Cited By (55)
Publication number | Priority date | Publication date | Assignee | Title |
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US3256953A (en) * | 1965-02-15 | 1966-06-21 | John J Rimi | Musical flower pot |
US3319737A (en) * | 1966-06-17 | 1967-05-16 | Barthel Lucien | Acoustical enclosures |
US3432001A (en) * | 1966-08-31 | 1969-03-11 | Samuel C Anastin | Sound improving devices |
US3715008A (en) * | 1972-01-31 | 1973-02-06 | Columbia Broadcasting Syst Inc | Loudspeaker cabinet assembly and method |
US3938617A (en) * | 1974-01-17 | 1976-02-17 | Fort Enterprises, Limited | Speaker enclosure |
US4029170A (en) * | 1974-09-06 | 1977-06-14 | B & P Enterprises, Inc. | Radial sound port speaker |
US4176730A (en) * | 1978-01-30 | 1979-12-04 | Mushkin Nicholas M | Speaker cabinet |
USD378522S (en) * | 1996-01-22 | 1997-03-18 | Sony Corporation | Speaker box |
USD413890S (en) * | 1998-12-14 | 1999-09-14 | Howard Krausse | Loud speaker |
USD415764S (en) * | 1998-06-05 | 1999-10-26 | New Transducers Limited | Loudspeaker |
USD416907S (en) * | 1998-06-05 | 1999-11-23 | New Transducers Limited | Loudspeaker |
USD418138S (en) * | 1998-04-28 | 1999-12-28 | Sony Corporation | Speaker box |
USD418139S (en) * | 1997-12-09 | 1999-12-28 | Sony Corporation | Speaker box |
USD420005S (en) * | 1998-06-05 | 2000-02-01 | New Transducers Limited | Loudspeaker |
US20110194722A1 (en) * | 2008-06-27 | 2011-08-11 | Michael Hudson | Method and apparatus for a loudspeaker assembly |
US8807269B1 (en) * | 2012-01-09 | 2014-08-19 | Brian Lucy | Loudspeaker enclosure |
USD740787S1 (en) * | 2013-03-15 | 2015-10-13 | Bose Corporation | Audio system |
USD741332S1 (en) * | 2012-06-08 | 2015-10-20 | Datalogic ADC, Inc. | Data reader for checkout station |
USD746263S1 (en) * | 2014-10-01 | 2015-12-29 | Bose Corporation | Satellite speaker |
USD754635S1 (en) * | 2014-10-15 | 2016-04-26 | Hon Hai Precision Industry Co., Ltd. | Speaker in the shape of an auto glass |
US9330169B2 (en) | 2013-03-15 | 2016-05-03 | Bose Corporation | Audio systems and related devices and methods |
USD756328S1 (en) * | 2014-06-12 | 2016-05-17 | Bose Corporation | Loudspeaker |
USD756329S1 (en) * | 2014-06-12 | 2016-05-17 | Bose Corporation | Loudspeaker |
USD758342S1 (en) * | 2014-10-01 | 2016-06-07 | Bose Corporation | Satellite speaker |
USD759069S1 (en) | 2013-03-15 | 2016-06-14 | Bose Corporation | Audio system display with graphical user interface |
USD760188S1 (en) * | 2015-01-14 | 2016-06-28 | Harman International Industries, Incorporated | Loudspeaker |
USD761762S1 (en) * | 2014-07-15 | 2016-07-19 | Funktion One Research | Loudspeaker |
USD768598S1 (en) * | 2015-06-26 | 2016-10-11 | Greenwave Scientific, Inc. | Media player |
USD769222S1 (en) * | 2014-07-15 | 2016-10-18 | Funktion One Research | Loudspeaker |
USD771018S1 (en) * | 2015-09-02 | 2016-11-08 | Meyer Sound Laboratories, Incorporated | Loudspeaker |
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Cited By (70)
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US3256953A (en) * | 1965-02-15 | 1966-06-21 | John J Rimi | Musical flower pot |
US3319737A (en) * | 1966-06-17 | 1967-05-16 | Barthel Lucien | Acoustical enclosures |
US3432001A (en) * | 1966-08-31 | 1969-03-11 | Samuel C Anastin | Sound improving devices |
US3715008A (en) * | 1972-01-31 | 1973-02-06 | Columbia Broadcasting Syst Inc | Loudspeaker cabinet assembly and method |
US3938617A (en) * | 1974-01-17 | 1976-02-17 | Fort Enterprises, Limited | Speaker enclosure |
US4029170A (en) * | 1974-09-06 | 1977-06-14 | B & P Enterprises, Inc. | Radial sound port speaker |
US4176730A (en) * | 1978-01-30 | 1979-12-04 | Mushkin Nicholas M | Speaker cabinet |
USD378522S (en) * | 1996-01-22 | 1997-03-18 | Sony Corporation | Speaker box |
USD418139S (en) * | 1997-12-09 | 1999-12-28 | Sony Corporation | Speaker box |
USD418138S (en) * | 1998-04-28 | 1999-12-28 | Sony Corporation | Speaker box |
USD420005S (en) * | 1998-06-05 | 2000-02-01 | New Transducers Limited | Loudspeaker |
USD416907S (en) * | 1998-06-05 | 1999-11-23 | New Transducers Limited | Loudspeaker |
USD415764S (en) * | 1998-06-05 | 1999-10-26 | New Transducers Limited | Loudspeaker |
USD413890S (en) * | 1998-12-14 | 1999-09-14 | Howard Krausse | Loud speaker |
US8276706B2 (en) * | 2008-06-27 | 2012-10-02 | Rgb Systems, Inc. | Method and apparatus for a loudspeaker assembly |
US8439153B2 (en) * | 2008-06-27 | 2013-05-14 | Rgb Systems, Inc. | Method and apparatus for a loudspeaker assembly |
US20110194722A1 (en) * | 2008-06-27 | 2011-08-11 | Michael Hudson | Method and apparatus for a loudspeaker assembly |
US8807269B1 (en) * | 2012-01-09 | 2014-08-19 | Brian Lucy | Loudspeaker enclosure |
USD741332S1 (en) * | 2012-06-08 | 2015-10-20 | Datalogic ADC, Inc. | Data reader for checkout station |
US9607083B2 (en) | 2013-03-15 | 2017-03-28 | Bose Corporation | Audio systems and related devices and methods |
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