EP3637790A1 - Lautsprecherbox mit zwei entgegengesetzt fixierten lautsprechern auf einer innenverschalung - Google Patents

Lautsprecherbox mit zwei entgegengesetzt fixierten lautsprechern auf einer innenverschalung Download PDF

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Publication number
EP3637790A1
EP3637790A1 EP19201132.8A EP19201132A EP3637790A1 EP 3637790 A1 EP3637790 A1 EP 3637790A1 EP 19201132 A EP19201132 A EP 19201132A EP 3637790 A1 EP3637790 A1 EP 3637790A1
Authority
EP
European Patent Office
Prior art keywords
acoustic enclosure
frame
shell
loudspeakers
speakers
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP19201132.8A
Other languages
English (en)
French (fr)
Other versions
EP3637790B1 (de
Inventor
Max RAINER
Bertrand Gangloff
Bérenger Roig
Jérémy Beigeaud
Victor Chambon
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Devialet SA
Original Assignee
Devialet SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Devialet SA filed Critical Devialet SA
Publication of EP3637790A1 publication Critical patent/EP3637790A1/de
Application granted granted Critical
Publication of EP3637790B1 publication Critical patent/EP3637790B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00Details of transducers, loudspeakers or microphones
    • H04R1/02Casings; Cabinets ; Supports therefor; Mountings therein
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00Details of transducers, loudspeakers or microphones
    • H04R1/20Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/22Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only 
    • H04R1/28Transducer mountings or enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means
    • H04R1/2869Reduction of undesired resonances, i.e. standing waves within enclosure, or of undesired vibrations, i.e. of the enclosure itself
    • H04R1/2892Mountings or supports for transducers
    • H04R1/2896Mountings or supports for transducers for loudspeaker transducers
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00Details of transducers, loudspeakers or microphones
    • H04R1/02Casings; Cabinets ; Supports therefor; Mountings therein
    • H04R1/025Arrangements for fixing loudspeaker transducers, e.g. in a box, furniture
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00Details of transducers, loudspeakers or microphones
    • H04R1/02Casings; Cabinets ; Supports therefor; Mountings therein
    • H04R1/026Supports for loudspeaker casings
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00Details of transducers, loudspeakers or microphones
    • H04R1/20Arrangements for obtaining desired frequency or directional characteristics
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00Details of transducers, loudspeakers or microphones
    • H04R1/20Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/22Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only 
    • H04R1/26Spatial arrangements of separate transducers responsive to two or more frequency ranges
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R3/00Circuits for transducers, loudspeakers or microphones
    • H04R3/12Circuits for transducers, loudspeakers or microphones for distributing signals to two or more loudspeakers
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2201/00Details of transducers, loudspeakers or microphones covered by H04R1/00 but not provided for in any of its subgroups
    • H04R2201/02Details casings, cabinets or mounting therein for transducers covered by H04R1/02 but not provided for in any of its subgroups
    • H04R2201/029Manufacturing aspects of enclosures transducers
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R5/00Stereophonic arrangements
    • H04R5/02Spatial or constructional arrangements of loudspeakers
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/02Details
    • H04R9/022Cooling arrangements

Definitions

  • Loudspeakers especially woofers, are bulky and heavy elements, capable of causing significant vibrations of the acoustic enclosure. Also, they are arranged head to tail so that the vibrations generated by one cancel those generated by the other.
  • the loudspeakers are first mounted on portions of the shell, on the inside of the loudspeaker. Then, the portions of the shell are assembled together and / or on a frame in a final position such that the two speakers are head to tail.
  • An advantage of such an architecture is that the loudspeakers stiffen the plastic periphery of the openings across which they extend.
  • the overall assembly is relatively complex, and there are traces of the assembly of the portions of the shell visible to a user, or sensitive to the touch. Such traces detract from the smooth and refined appearance that one generally wishes to give to the acoustic enclosure. These traces are generally considered unsightly.
  • An object of the invention is therefore to provide an acoustic enclosure which is less complex to assemble.
  • the invention relates to an acoustic enclosure of the type described above, in which the armature comprises an internal part situated transversely between the two speakers and on which the two speakers are fixed.
  • the acoustic enclosure 1 is for example an active enclosure, that is to say that it in particular comprises an audio signal reader and an amplifier (not shown). Likewise, for the sake of clarity, other electrical or electronic elements of the acoustic enclosure not directly linked to the invention are not shown in the figures.
  • the acoustic enclosure 1 comprises a metallic frame 3, and a plastic shell 5 fixed to the frame and defining at least two openings 7A, 7B.
  • the acoustic enclosure 1 comprises two loudspeakers 9A, 9B arranged head to tail along a transverse axis T and extending respectively through the two openings 7A, 7B.
  • the acoustic enclosure comprises a fixing system 11 adapted to fix the speaker 9B on the frame 3, the speaker 9A being, in the example shown, fixed in a simpler manner on this frame.
  • the transverse axis T is for example horizontal when the acoustic enclosure is in the position of use on a horizontal surface S.
  • the acoustic enclosure 1 is oblong along a longitudinal axis L advantageously perpendicular to the transverse axis T.
  • the acoustic enclosure 1 comprises a front part 13 formed by the shell 5, and a rear part 15 formed by the frame 3.
  • the acoustic enclosure 1 comprises a third loudspeaker (not shown) fixed in a housing 17 defined by the shell 5.
  • the acoustic enclosure has, for example, a symmetrical external shape with respect to a plane P perpendicular to the transverse axis T and passing through the longitudinal axis L.
  • the frame 3 is for example a foundry piece, advantageously made of aluminum.
  • the frame 3 comprises an external part 19 forming the rear part 15 of the acoustic enclosure and adapted to fit into the shell 5, for example along the longitudinal axis L.
  • the frame 3 also includes an internal part 21 s extending between the two speakers 9A, 9B along the plane P and on which the two speakers are rigidly fixed.
  • rigidly fixed is meant here a solid mechanical fixing, otherwise resistant, for example, to a tearing force of 100 N (newton), preferably 1000 N.
  • the external part 19 comprises a rear portion 23 ( figure 4 ) defining a plurality of fins 25 for dissipating the heat generated inside the acoustic enclosure, and a sole 27 extend longitudinally under the speakers 9A, 9B from the rear portion 23.
  • the internal part 21 has for example a generally planar shape.
  • the internal part 21 is advantageously made of the rear portion 23 and the sole 27.
  • the internal part 21 defines an axial passage 29 through which the fixing system 11 passes.
  • the internal part On a first face 31A transversely oriented towards the loudspeaker 9A, the internal part defines a reception surface 33A of the loudspeaker 9A. On a second face 31B transversely oriented towards the speaker 9B, the internal part defines a receiving surface 33B of the speaker 98.
  • the reception surfaces 33A, 33B are advantageously perpendicular to the transverse axis T.
  • the reception surfaces advantageously completely surround the transverse axis T and for example have an annular shape.
  • the reception surfaces form transverse protrusions of the internal part 21, respectively on the first face 31A and on the second face 31B.
  • the shell 5 is advantageously in one piece.
  • the shell 5 defines with the external part 19 of the frame an internal volume 35 of the acoustic enclosure into which the loudspeakers 9A and 9B are largely inserted.
  • the shell 5 comprises an internal layer 37 comprising for example polycarbonate (PC) and between 15% and 25% by mass of glass fibers, and an external layer 39, or finishing layer, comprising for example acrylonitrile butadiene styrene (ABS).
  • PC polycarbonate
  • ABS acrylonitrile butadiene styrene
  • the shell is rigidly fixed on the internal part 21 of the frame, for example using a stud 41 screwed longitudinally in the edge of the internal part 21, and a nut 43 screwed on the stud to press the shell longitudinally against the internal part.
  • the shell is not rigidly linked to the two speakers 9A, 9B other than by means of the frame 3.
  • the shell is adapted to allow insertion of the speakers 9A, 9B along the transverse axis T respectively through the openings 7A, 7B up to the internal part 21 of the frame.
  • the shell comprises two rear walls 45A, 45B respectively located longitudinally between the speakers 9A, 9B and the rear portion 23 of the frame.
  • the shell advantageously defines an opening 46 for accessing the speaker 9A.
  • the opening 46 is advantageously located in the housing 17 and hidden by the third speaker (not shown).
  • the internal layer 37 defines the internal volume 35.
  • the openings 7A, 7B are advantageously circular and for example centered on the transverse axis T.
  • the openings 7A, 7B are delimited respectively by two edges 47A, 47B of the shell.
  • the edge 47A and the rear wall 45A are stiffened by a metallic insert 49A.
  • edge 49B and the rear wall 45B are stiffened by a metallic insert 49B advantageously structurally similar to the metallic insert 49A.
  • the insert 49A is molded by the internal layer 37 of the shell.
  • the metal insert 49A comprises a circular part 51 located in the edge 47A to stiffen the latter, and a part 53 longitudinally adjacent to the circular part 51 and located in the rear wall 45A.
  • the speakers 9A, 9B are for example woofers.
  • woofer is meant, for example, a speaker adapted to broadcast sound waves of frequencies below 1000 Hz, preferably less than 500 Hz, even more preferably less than 150 Hz.
  • the speakers 9A, 9B respectively comprise a chassis 55A, 55B ( figure 4 ), a membrane 57A, 57B adapted to emit sound waves, and a magnetic circuit 59A, 59B.
  • the membranes 57A, 57B are advantageously spherical caps.
  • the membranes are not interrupted at the transverse axis T, because the loudspeakers 9A, 9B are fixed to the internal part 21 by their sides transversely opposite to the membranes.
  • the magnetic circuits 59A, 59B are fixed on the internal part 21 of the armature.
  • the magnetic circuits 59A, 59B respectively define surfaces 61A, 61 B in contact with the reception surfaces 33A, 33B of the armature.
  • the magnetic circuits respectively define an axial housing 63A, 63B opening at least on the side of the internal part 21 of the armature.
  • the surface 61A is delimited radially from the transverse axis T by a flange 65A formed by the magnetic circuit 59A.
  • the surface 33A is for example glued to the receiving surface 61A using an adhesive 67.
  • the rim 65A and the protuberance of the internal part 21 forming the receiving surface 33A together define a housing 69 in which an overflow of glue 67 is present, which reinforces the cohesion between the magnetic circuit 59A and the internal part 21 of the frame.
  • the frames 55A, 55B are fixed to the magnetic circuits 59A, 59B and are not fixed directly to the armature.
  • the chassis 55A, 55B are not rigidly fixed to the shell 5 other than by means of the magnetic motors and of the frame 3. In other words, the chassis of the speakers 9A, 9B are cantilevered by relative to the edges 47A, 47B of the shell.
  • seals 71A, 71B are disposed respectively between the speakers 9A, 9B and the edges 47A, 47B of the shell. However, these joints do not constitute a rigid link between the speakers 9A, 9B and the shell.
  • seals 71A and 71 B are structurally identical to each other and symmetrical to each other with respect to the plane P, only the seal 71A will be described below.
  • the seal 71A comprises a main part 73 elastically enclosing the chassis 55A around the transverse axis T, and a lip 75 bearing on the edge 47A of the shell.
  • the main part 73 is in transverse abutment against a shoulder 77A formed by the chassis 55A.
  • the lip 75 is flexed transversely on the outside of the acoustic enclosure.
  • This configuration of the seal 71A allows easy introduction of the speaker 9A into the internal volume 35 through the opening 7A.
  • the fixing system 11 comprises a first part 79 passing axially through the internal part 21 of the frame via the passage 29, and a second part 81 situated transversely on the other side of the internal part 21 relative to the loudspeaker 9B.
  • the first part 79 is a screw rod, and the second part comprises a head of this screw and a washer.
  • the first part 79 that is to say the screw rod, is screwed into the housing 63B formed by the magnetic circuit 59B of the speaker 9B.
  • the second part 81 that is to say the screw head, is mounted movable in rotation relative to the internal part 21 around an axis T 'which is in the example the transverse axis T, between a speaker blocking position 9B, and an unlocking position making it possible to extract the speaker 9B through the opening 7B.
  • the internal part 21 is sandwiched axially between the loudspeaker 9B and the second part 81.
  • the first part 79 is unscrewed from the magnetic circuit 59B, which releases the loudspeaker 9B, which can be extracted from the internal volume 35 by a translation along the transverse axis T.
  • the second part 81 that is to say the screw head can be actuated in rotation about the axis T 'from the side of the internal part 21 opposite the loudspeaker 9B in the absence of the loudspeaker 9A .
  • the second part 81 has a transverse extension 83 engaged in the housing 63A defined by the speaker 9A. This makes it possible to guide the movement of the loudspeaker 9A when the latter is introduced into the internal volume 35 to be glued to the receiving surface 33A of the frame.
  • the fastening system 11 comprises a stud secured to the loudspeaker 9B and passing through the passage 29, and a nut screwed onto the stud from the side of the internal part 21 transversely opposite to the loudspeaker 9B.
  • the shell 5 and the armature 3 are fitted one inside the other along the longitudinal axis L.
  • the shell is then fixed on the armature by screwing the nut 43 on stud 41.
  • the loudspeaker 9B is then introduced along the transverse axis T into the internal volume 35 via the opening 7B.
  • the fixing system 11 is introduced into the passage 29.
  • the first part 79 is screwed into the housing 63B until that the second part 81 abuts against the internal part 21.
  • the surface 61B of the magnetic circuit 59B is then held firmly in contact with the receiving surface 33B of the internal part.
  • the screwing operation of the fixing system 11 is easily carried out from the side of the internal part 21 not yet occupied by the speaker 9A.
  • the receiving surface 33A and / or the surface 61A of the magnetic circuit 59A are coated with glue 67.
  • the loudspeaker 9A is then introduced into the internal volume 35 via the opening 7A of the shell.
  • the extension 83 of the second part 81 enters the housing 63A defined by the magnetic circuit 59A, which makes it possible to guide the movement of the speaker 9A.
  • the surface 61A and the reception surface 33A are then kept in contact with each other.
  • An overflow of glue 67 flows into the housing 69. The drying takes place.
  • the speaker 9A is in turn securely attached to the internal part 21 of the frame.
  • the access opening 46 defined by the shell is used to introduce a suitable tool (not shown) for detaching the loudspeaker 9A from the internal part 21.
  • the loudspeaker 9A can then be extracted along the transverse axis T.
  • the fixing system 11 becomes accessible through the opening 7A. It is then possible to act on the second part 81 in rotation to unscrew the first part 79 and release the loudspeaker 9B.
  • the loudspeaker 9B can then be extracted along the transverse axis T through the opening 7B.
  • the acoustic enclosure 1 is easy to assemble and disassemble, despite the one-piece nature of its shell 5.
  • acoustic enclosure 100 constituting a variant of the acoustic enclosure 1.
  • the acoustic enclosure 100 is analogous to the acoustic enclosure 1 represented on the Figures 1 to 7 . Similar elements have the same reference numbers which will not be described again. Only the significant differences will be described below.
  • the acoustic enclosure 100 differs by the method of fixing the speakers 9A, 9B.
  • the loudspeaker 9A of the acoustic enclosure 100 is fixed by screwing in a similar manner to the loudspeaker 9B of the acoustic enclosure 1.
  • the fastening system 11 rigidly fixes the loudspeaker 9A on the internal part 21.
  • the first part 79 is screwed into the magnetic circuit 59A, and the second part 81 allows to screw the first part from the side of the internal part 21 opposite the speaker 9A.
  • the second part 81 is devoid of the extension 83 present in the acoustic enclosure 1.
  • the loudspeaker 9B is fixed to the internal part 21 by a fixing system 111 which does not involve sticking of the loudspeaker 9B to the internal part 21.
  • the fixing system 111 comprises two pins 113, 115 making it possible to block or unblock the loudspeaker 9B relative to the internal part 21.
  • the fixing system 111 is configured to have only a single pin.
  • the fastening system 111 comprises a support block 117 for longitudinally guiding the pins 113, 115, a shouldered screw 119 screwed axially in the magnetic circuit 59B of the speaker 9B, a spring washer 121, and a connecting piece 123 threaded on the shoulder screw 119.
  • the spring washer 121 is compressed transversely between the connecting piece 123 and a head 125 of the shouldered screw 119.
  • the spring washer 121 has a high stiffness.
  • the support block 117 is fixed to the internal part 21 of the frame on the side of the speaker 9B, for example by screws.
  • the support block defines two longitudinal passages 127, 129 for the pins 113, 115, and a housing 131 in which the screw head 125, the spring washer 121 and the connecting piece 123 are located.
  • the pins 113, 115 for example have a tapered profile with a diameter progressively increasing in the longitudinal direction towards their heads 133 to 135 in order to gradually compress the spring washers 121 and to facilitate assembly of the system.
  • the connecting piece 123 has a flange 137 forming a transverse stop for the pins 113, 115.
  • the loudspeaker 9B is rigidly fixed on the internal part 21, in the sense that a breakout force must overcome the stiffness of the spring washer 121 to move the magnetic circuit 59B away from the support block 117. In addition, the loudspeaker 9B is brought back to the support block as soon as this force ceases.
  • the pins 113, 115 are screwed into the internal part 21 of the frame, and the support block 117 is advantageously eliminated.
  • the shell 5 defines two openings 139, 141 for accessing the heads 133, 135 of the pins from the outside of the shell.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • General Health & Medical Sciences (AREA)
  • Details Of Audible-Bandwidth Transducers (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
  • Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)
EP19201132.8A 2018-10-08 2019-10-02 Lautsprecherbox mit zwei entgegengesetzt fixierten lautsprechern auf einer innenverschalung Active EP3637790B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1859308A FR3087067B1 (fr) 2018-10-08 2018-10-08 Enceinte acoustique a deux haut-parleurs tete-beche fixes sur une armature interne

Publications (2)

Publication Number Publication Date
EP3637790A1 true EP3637790A1 (de) 2020-04-15
EP3637790B1 EP3637790B1 (de) 2022-04-20

Family

ID=65244180

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19201132.8A Active EP3637790B1 (de) 2018-10-08 2019-10-02 Lautsprecherbox mit zwei entgegengesetzt fixierten lautsprechern auf einer innenverschalung

Country Status (5)

Country Link
US (1) US10834488B2 (de)
EP (1) EP3637790B1 (de)
JP (1) JP2020065250A (de)
CN (1) CN111010630A (de)
FR (1) FR3087067B1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3124633A1 (fr) * 2021-06-28 2022-12-30 Devialet Système acoustique comprenant un système de démontage avec résistance électrique chauffante.

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USD717341S1 (en) * 2013-06-09 2014-11-11 Apple Inc. Electronic device
FR3137522A1 (fr) 2022-07-04 2024-01-05 Devialet Enceinte acoustique à haut-parleur tête bêche

Citations (2)

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Publication number Priority date Publication date Assignee Title
US4805221A (en) * 1984-04-17 1989-02-14 Quaas Juergen Construction of sound converter in sound guide, especially for loudspeakers, for example speaker boxes
EP3085108B1 (de) * 2013-12-18 2018-08-29 Devialet Akustisches gehäuse mit einer nicht wärmeleitenden aussenwand, einem elektrodynamischen lautsprecher und einer elektronischen steuerschaltung

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US4876723A (en) * 1988-11-30 1989-10-24 Peter Tsung-Hou Fei Loudspeaker system
CN1112348A (zh) * 1995-07-19 1995-11-22 高诚 平衡式音箱
JP2001352592A (ja) * 2000-06-08 2001-12-21 Fujitsu Ten Ltd スピーカ構造
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RU146313U1 (ru) * 2014-01-31 2014-10-10 Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Ульяновский государственный технический университет" Динамический громкоговоритель
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Publication number Priority date Publication date Assignee Title
US4805221A (en) * 1984-04-17 1989-02-14 Quaas Juergen Construction of sound converter in sound guide, especially for loudspeakers, for example speaker boxes
EP3085108B1 (de) * 2013-12-18 2018-08-29 Devialet Akustisches gehäuse mit einer nicht wärmeleitenden aussenwand, einem elektrodynamischen lautsprecher und einer elektronischen steuerschaltung

Non-Patent Citations (2)

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Title
JAN SELLEY: "Naim Mu-So Qb Review. Can Naim make their philosophy work at 600?", 30 January 2016 (2016-01-30), XP055589715, Retrieved from the Internet <URL:https://www.avforums.com/review/naim-mu-so-qb-review.12327> [retrieved on 20190517] *
MICHAEL BROWN: "Devialet Phantom review: Forget everything you thought you knew about speaker technology", 13 November 2015 (2015-11-13), XP055589418, Retrieved from the Internet <URL:https://www.techhive.com/article/3004548/devialet-phantom-review-forget-everything-you-thought-you-knew-about-speaker-technology.html> [retrieved on 20190516] *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3124633A1 (fr) * 2021-06-28 2022-12-30 Devialet Système acoustique comprenant un système de démontage avec résistance électrique chauffante.
EP4113505A1 (de) * 2021-06-28 2023-01-04 Devialet Akustisches system mit einem demontagesystem mit elektrischem heizwiderstand

Also Published As

Publication number Publication date
FR3087067B1 (fr) 2022-02-25
FR3087067A1 (fr) 2020-04-10
US10834488B2 (en) 2020-11-10
JP2020065250A (ja) 2020-04-23
US20200112778A1 (en) 2020-04-09
EP3637790B1 (de) 2022-04-20
CN111010630A (zh) 2020-04-14

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