ITRE980117A1 - PASSIVE ELEMENTS IN CLOSED VOLUMES, FOR SPEAKERS. - Google Patents

PASSIVE ELEMENTS IN CLOSED VOLUMES, FOR SPEAKERS. Download PDF

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Publication number
ITRE980117A1
ITRE980117A1 ITRE980117A ITRE980117A1 IT RE980117 A1 ITRE980117 A1 IT RE980117A1 IT RE980117 A ITRE980117 A IT RE980117A IT RE980117 A1 ITRE980117 A1 IT RE980117A1
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IT
Italy
Prior art keywords
loudspeakers
closed
passive elements
elements
same
Prior art date
Application number
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Italian (it)
Inventor
Ing Tiziano Nili
Original Assignee
Ask Ind Spa
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 Ask Ind Spa filed Critical Ask Ind Spa
Priority to ITRE980117 priority Critical patent/IT1305338B1/en
Priority to TR1999/02460A priority patent/TR199902460A2/en
Priority to ES9902237A priority patent/ES2160075B1/en
Priority to GB9924919A priority patent/GB2344016B/en
Priority to FR9913482A priority patent/FR2786357B1/en
Priority to ARP990105416 priority patent/AR021856A1/en
Priority to PL336730A priority patent/PL195757B1/en
Priority to DE1999156254 priority patent/DE19956254C2/en
Priority to BR9907546A priority patent/BR9907546A/en
Publication of ITRE980117A1 publication Critical patent/ITRE980117A1/en
Application granted granted Critical
Publication of IT1305338B1 publication Critical patent/IT1305338B1/en

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Classifications

    • 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
    • H04R1/283—Enclosures comprising vibrating or resonating arrangements using a passive diaphragm
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R11/00—Arrangements for holding or mounting articles, not otherwise provided for
    • B60R11/02—Arrangements for holding or mounting articles, not otherwise provided for for radio sets, television sets, telephones, or the like; Arrangement of controls thereof
    • B60R11/0217—Arrangements for holding or mounting articles, not otherwise provided for for radio sets, television sets, telephones, or the like; Arrangement of controls thereof for loud-speakers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R11/00—Arrangements for holding or mounting articles, not otherwise provided for
    • B60R11/02—Arrangements for holding or mounting articles, not otherwise provided for for radio sets, television sets, telephones, or the like; Arrangement of controls thereof
    • B60R11/0217—Arrangements for holding or mounting articles, not otherwise provided for for radio sets, television sets, telephones, or the like; Arrangement of controls thereof for loud-speakers
    • B60R11/0223—Arrangements for holding or mounting articles, not otherwise provided for for radio sets, television sets, telephones, or the like; Arrangement of controls thereof for loud-speakers of flat type
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R11/00—Arrangements for holding or mounting articles, not otherwise provided for
    • B60R2011/0042—Arrangements for holding or mounting articles, not otherwise provided for characterised by mounting means
    • B60R2011/0043—Arrangements for holding or mounting articles, not otherwise provided for characterised by mounting means for integrated articles, i.e. not substantially protruding from the surrounding parts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R11/00—Arrangements for holding or mounting articles, not otherwise provided for
    • B60R2011/0042—Arrangements for holding or mounting articles, not otherwise provided for characterised by mounting means
    • B60R2011/0043—Arrangements for holding or mounting articles, not otherwise provided for characterised by mounting means for integrated articles, i.e. not substantially protruding from the surrounding parts
    • B60R2011/0045—Arrangements for holding or mounting articles, not otherwise provided for characterised by mounting means for integrated articles, i.e. not substantially protruding from the surrounding parts with visible part, e.g. flush mounted
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2499/00—Aspects covered by H04R or H04S not otherwise provided for in their subgroups
    • H04R2499/10—General applications
    • H04R2499/13—Acoustic transducers and sound field adaptation in vehicles

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
  • Details Of Audible-Bandwidth Transducers (AREA)
  • Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)

Description

Descrizione di una invenzione industriale avente per titolo: Description of an industrial invention entitled:

Elementi passivi in volumi chiusi, per altoparlanti. Passive elements in closed volumes, for loudspeakers.

La presente invenzione si riferisce ad elementi passivi per altoparlanti, inseribili ed alloggiabili in volumi chiusi e senza vincoli, ricavati nei vani vuoti presenti in varie zone di autoveicoli, ad esempio nelle parti delle finiture dell’ interno delle pannellerie, delle cappelliere, e simili, in cui detti volumi chiusi producono le condizioni necessarie agli elementi passivi, su elementi smorzanti, associati ad altoparlanti che sfruttano lo stesso volume d’aria. The present invention relates to passive elements for loudspeakers, which can be inserted and housed in closed volumes and without constraints, obtained in the empty compartments present in various areas of motor vehicles, for example in the parts of the interior finishes of the paneling, of the hat boxes, and the like, in which said closed volumes produce the necessary conditions for the passive elements, on damping elements, associated with loudspeakers that exploit the same volume of air.

E’ noto che nella tecnologia della trasmissione sonora e in particolare in quella specifica riguardante gli altoparlanti, col termine “passivo” si intende un elemento il cui funzionamento non è generato da “motori” propri, non avendo bobine, magneti o altri elementi idonei a servire al suo funzionamento come un altoparlante tradizionale, ma è solamente costituito da una membrana la cui massa è calibrata e calcolata in modo da muoversi in fase con un altoparlante primario pilota, o “attivo”, che lo pone in eccitazione. E’ anche noto che un elemento passivo, posto su di un centratore o cerniera od elemento smorzante, che funziona in accordo con un altoparlante che sfrutta lo stesso volume d’aria disponibile, a parità di dimensioni, produce su quest’ultimo un aumento dell’efficienza alle basse frequenze. Questo sistema aumenta la superfìcie vibrante dell’elemento attivo perché si muove con la pressione o la depressione generate dal movimento della membrana dello stesso. L’attuale combinazione dei suddetti elementi “attivi-passivi” viene realizzata creando appositi contenitori, o box, il cui volume d’aria è giusto determinato in funzione delle caratteristiche dell’altoparlante attivo; così come in funzione di dette caratteristiche è calibrato e calcolato anche il valore della massa della membrana passiva corrispondente, la quale è costituita in modo da muoversi in fase con l’altoparlante stesso. L’aria interna dei box di contenimento non è in collegamento con quella esterna. It is known that in sound transmission technology and in particular in that specific to loudspeakers, the term "passive" means an element whose operation is not generated by its own "motors", as it does not have coils, magnets or other elements suitable for to serve its functioning as a traditional loudspeaker, but it is only constituted by a membrane whose mass is calibrated and calculated so as to move in phase with a primary driver, or “active” loudspeaker, which places it in excitation. It is also known that a passive element, placed on a centering device or hinge or damping element, which works in accordance with a loudspeaker that exploits the same volume of air available, with the same dimensions, produces on the latter an increase in the efficiency at low frequencies. This system increases the vibrating surface of the active element because it moves with the pressure or depression generated by the movement of the membrane of the same. The current combination of the aforementioned "active-passive" elements is achieved by creating special containers, or boxes, whose air volume is determined according to the characteristics of the active speaker; as a function of these characteristics, the mass value of the corresponding passive membrane is also calibrated and calculated, which is constituted in such a way as to move in phase with the speaker itself. The internal air of the containment boxes is not in connection with the external one.

La realizzazione dei sistemi sopra descritti, pur essendosi dimostrata valida nei confronti dell’aumento dell’efficienza alle basse frequenze degli altoparlanti, a parità di dimensioni, presenta alcune limitazioni in relazione alle possibili applicazioni pratiche, specie quelle relative agli impiantì radio per autoveicoli in genere, a causa dei loro ingombri. Although the implementation of the systems described above has proved to be valid in terms of increasing the efficiency at low frequencies of the loudspeakers, with the same dimensions, it has some limitations in relation to possible practical applications, especially those relating to radio systems for motor vehicles in general. , due to their size.

Scopo della presente invenzione è quello di risolvere i suddetti inconvenienti. L’invenzione, quale essa è caratterizzata dalle rivendicazioni, risolve il problema per mezzo di elementi passivi per altoparlanti, inseriti in volumi chiusi alloggiabili senza vincoli in varie zone di autoveicoli, mediante il quale si ottengono i seguenti risultati: gli altoparlanti ed i rispettivi elementi passivi calibrati, vengono applicati nei vani già esistenti, o adeguatamente e opportunamente configurati durante la formatura delle carrozzerie dei veicoli , all’interno delle pannellerie, delle cappelliere e simili; i vani stessi assumono così la funzione dei tradizionali box a volume d’aria determinato e delimitato, e gli altoparlanti attivi, con le corrispondenti membrane passive, trovano diretta collocazione in essi. I vantaggi conseguiti secondo il presente trovato consistono essenzialmente nel fatto che per alloggiare i sistemi vengono sfruttati direttamente i vani e gli ingombri esistenti all 'interno dei veicoli, senza bisogno di specifici box supplementari; la mancanza dei box consente una riduzione dei pesi, una riduzione del numero di componenti, una riduzione dei costi ed una maggiore facilità di montaggio; l’applicazione consente di ottenere l’aumento voluto di efficienza del sistema acustico alle basse frequenze. The object of the present invention is to solve the aforementioned drawbacks. The invention, as it is characterized by the claims, solves the problem by means of passive elements for loudspeakers, inserted in closed volumes that can be housed without constraints in various areas of motor vehicles, by means of which the following results are obtained: the loudspeakers and the respective elements passive calibrated, are applied in the already existing compartments, or suitably and appropriately configured during the shaping of the vehicle bodies, inside the paneling, the parcel shelves and the like; the compartments themselves thus take on the function of traditional boxes with a determined and delimited air volume, and the active loudspeakers, with the corresponding passive membranes, find direct placement in them. The advantages achieved according to the present invention essentially consist in the fact that in order to house the systems, the compartments and dimensions existing inside the vehicles are used directly, without the need for specific additional boxes; the lack of boxes allows a reduction in weight, a reduction in the number of components, a reduction in costs and greater ease of assembly; the application allows to obtain the desired increase in the efficiency of the acoustic system at low frequencies.

L’invenzione viene descritta in dettaglio nel seguito, secondo forme realizzative date unicamente a scopo esemplificativo e non limitativo, con riferimento agli allegati disegni, in cui: The invention is described in detail below, according to embodiments given solely for illustrative and non-limiting purposes, with reference to the attached drawings, in which:

la fig. 1 rappresenta una vista schematica in pianta di combinazioni di altoparlanti attivi con relative membrane passive, inserite in vani vuoti, di forme differenti, presenti o formate sui veicoli, e fig. 1 represents a schematic plan view of combinations of active loudspeakers with relative passive membranes, inserted in empty compartments, of different shapes, present or formed on the vehicles, and

la fig. 2 rappresenta la sezione trasversale ingrandita di un esempio di realizzazione di una membrana passiva. fig. 2 shows the enlarged cross section of an example of embodiment of a passive membrane.

Con riferimento alle figure, la situazione richiesta per conseguire gli scopi ed i vantaggi menzionati, viene ottenuta all’interno di un qualsiasi autoveicolo, ricavando il volume d’aria chiuso necessario (1) dalle parziali o totali configurazioni dei vani di finitura che sono usualmente presenti all' interno delle pannellerie di portiere, delle cappelliere, e simili (2). In alternativa, e in funzione delle prevedibili serie costruttive di autoveicoli, i vani vuoti (1) a volume d’aria chiuso, necessari per conseguire i medesimi scopi succitati, possono essere realizzati, secondo le configurazioni e le dimensioni volute, in concomitanza diretta delle operazioni di stampaggio e di assemblaggio delle carrozzerie e/o delle parti di carrozzeria degli autoveicoli. In ogni caso, sulle strutture interne di supporto (3), di detti vani, vengono create le aperture (4) in corrispondenza delle quali sono applicati gli altoparlanti (6) e le membrane passive (7). Le aperture (4) sono racchiuse e protette superficialmente, verso Γ interno dei veicoli, con rivestimenti porosi quali le stesse moquette di rivestimento e/o simili (5). Gli altoparlanti (6) vengono impegnati coassialmente alle corrispondenti aperture (4) con tradizionali mezzi di vincolo; le membrane passive (7), invece, si collegano alle strutture di supporto (3) attraverso, ad esempio, corone periferiche (8) sulle quali si impegnano delle masse centrali (9) per mezzo di elementi smorzanti elastici o centratori intermedi (10). Le masse centrali, o radiatori passivi (9), sono ottenibili anche da superfici fustellate derivate dalla stessa struttura di supporto e sono eventualmente abbinabili a masse aggiunte (11) di calibratura, o di accordo meccanico, per ottenere Γ esatto peso calcolato, in funzione delPaltoparlante primario (6) che lo pilota. With reference to the figures, the situation required to achieve the aforementioned purposes and advantages is obtained inside any motor vehicle, obtaining the necessary closed air volume (1) from the partial or total configurations of the finishing compartments which are usually present inside the door panels, overhead racks, and the like (2). Alternatively, and depending on the foreseeable construction series of motor vehicles, the empty compartments (1) with closed air volume, necessary to achieve the same aforementioned purposes, can be made, according to the desired configurations and dimensions, in direct concomitance with the operations of molding and assembly of car bodies and / or body parts of motor vehicles. In any case, on the internal support structures (3) of said compartments, the openings (4) are created in correspondence with which the loudspeakers (6) and the passive membranes (7) are applied. The openings (4) are enclosed and protected on the surface, towards the inside of the vehicles, with porous coatings such as the same carpet and / or similar (5). The loudspeakers (6) are coaxially engaged to the corresponding openings (4) with traditional fastening means; the passive membranes (7), on the other hand, are connected to the support structures (3) through, for example, peripheral crowns (8) on which central masses (9) are engaged by means of elastic damping elements or intermediate centering devices (10) . The central masses, or passive radiators (9), can also be obtained from die-cut surfaces derived from the same support structure and can possibly be combined with added masses (11) for calibration, or mechanical agreement, to obtain an exact calculated weight, depending on the of the primary loudspeaker (6) that drives it.

In sostanza, il trovato consiste nel fatto che la stessa situazione ottenibile da un insieme costituito da un elemento passivo (7), posto su di un elemento smorzante (10), il quale funziona in accordo con un altoparlante (6) che sfrutta lo stesso volume d’aria chiuso (1), costituito da un tradizionale box (12), per generare un aumento d’efficienza dell’altoparlante stesso, alle basse frequenze e a parità di dimensioni, si ottiene all 'interno di un autoveicolo, dove il volume d’aria chiuso necessario viene creato con una configurazione tale da sfruttare parzialmente o totalmente i vani vuoti (2), esistenti o realizzati durante la formatura delle carrozzerie, compresi tra le finiture dell’interno delle suddette pannellerie, delle cappelliere e/o di altre zone simili e idonee delle autovetture. In essence, the invention consists in the fact that the same situation obtainable from a set consisting of a passive element (7), placed on a damping element (10), which works in accordance with a loudspeaker (6) which exploits the same closed air volume (1), consisting of a traditional box (12), to generate an increase in the efficiency of the loudspeaker itself, at low frequencies and with the same dimensions, is obtained inside a vehicle, where the volume necessary closed air is created with a configuration such as to partially or totally exploit the empty compartments (2), existing or created during the shaping of the bodywork, including between the interior finishes of the aforementioned panels, overhead racks and / or other similar and suitable areas of passenger cars.

E’ evidente che, in funzione delle configurazioni e/o in funzione delle varie esigenze di applicabilità ai vani vuoti a volume d’aria chiuso (1) disponibili, esistenti o formati appositamente, gli elementi vibranti passivi (7) possono essere realizzati anche con strutture differenti, purché la loro massa sia calcolata e calibrata in modo da conseguire l’esigenza primaria di movimento in fase con gli elementi attivi, o altoparlanti (6) associati. It is clear that, according to the configurations and / or according to the various requirements of applicability to the available, existing or specially formed empty compartments with closed air volume (1), the passive vibrating elements (7) can also be made with different structures, provided that their mass is calculated and calibrated so as to achieve the primary need for movement in phase with the active elements, or associated loudspeakers (6).

Mentre il trovato è stato descritto ed illustrato secondo una forma realizzativa data a solo scopo esemplificativo e non limitativo, risulterà evidente agli esperti del ramo che varie modifiche alle strutture, alle composizioni, ai posizionamenti, agli orientamenti ed agli insiemi, potranno essere apportate senza per questo uscire dal suo ambito e scopo. While the invention has been described and illustrated according to an embodiment given purely by way of non-limiting example, it will be evident to those skilled in the art that various modifications to the structures, compositions, positioning, orientations and assemblies can be made without forcing this going out of its scope and purpose.

Claims (6)

RIVENDICAZIONI 1) Elementi passivi in volumi chiusi, per altoparlanti, comprendenti elementi passivi (7), posti su elementi smorzanti (10), i quali funzionano in accordo con altoparlanti (6) che sfruttano lo stesso volume d’aria chiuso per ottenere, a parità di dimensioni, un aumento d’efficienza degli altoparlanti stessi alle basse frequenze caratterizzati dal fatto che tali condizioni sono ricreate all’ interno di autoveicoli, dove il volume d’aria chiuso (1) necessario è ricavato, parzialmente o totalmente, direttamente in uno dei vani vuoti configurati tra le finiture dell’ interno di pannellerie, di cappelliere e/o di altre zone simili e idonee (2), presenti nelle strutture costituenti le autovetture medesime. CLAIMS 1) Passive elements in closed volumes, for loudspeakers, comprising passive elements (7), placed on damping elements (10), which work in accordance with loudspeakers (6) which exploit the same closed volume of air to obtain, for the same in size, an increase in the efficiency of the loudspeakers themselves at low frequencies characterized by the fact that these conditions are recreated inside motor vehicles, where the necessary closed volume of air (1) is obtained, partially or totally, directly in one of the empty compartments configured between the finishes of the interior of paneling, of parcel shelves and / or other similar and suitable areas (2), present in the structures making up the cars themselves. 2) Elementi passivi in volumi chiusi, per altoparlanti, comprendenti elementi passivi (7), posti su elementi smorzanti (10), i quali funzionano in accordo con altoparlanti (6) che sfruttano lo stesso volume d’aria chiuso per ottenere, a parità di dimensioni, un aumento d’efficienza degli altoparlanti stessi alle basse frequenze caratterizzati dal fatto che tali condizioni sono ricreate all’ interno di autoveicoli, dove il volume d’aria chiuso (1) necessario è ricavato in uno dei vani vuoti, adeguatamente dimensionati, proporzionati e stampati durante lo stampaggio delle carrozzerie, o parti di esse, configurati tra le finiture dell’ interno di pannellerie, di cappelliere e/o di altre zone simili e idonee (2), concepite nelle strutture costituenti le autovetture medesime. 2) Passive elements in closed volumes, for loudspeakers, comprising passive elements (7), placed on damping elements (10), which work in accordance with loudspeakers (6) which exploit the same closed volume of air to obtain, for the same in size, an increase in efficiency of the loudspeakers themselves at low frequencies characterized by the fact that these conditions are recreated inside motor vehicles, where the necessary closed volume of air (1) is obtained in one of the empty compartments, suitably sized, proportioned and printed during the molding of the bodies, or parts of them, configured between the finishes of the interior of the paneling, of the parcel shelf and / or of other similar and suitable areas (2), conceived in the structures making up the cars themselves. 3) Elementi passivi in volumi chiusi per altoparlanti secondo le rivendicazioni 1 e 2 caratterizzati dai fatto che gli elementi vibranti passivi (7) sono proporzionabili e configurabili con strutture differenti, in funzione delle applicazioni in vani vuoti (1) diversamente configurati, e in funzione della loro massa calcolata e calibrata rispetto agli altoparlanti (6) cui sono associati. 3) Passive elements in closed volumes for loudspeakers according to claims 1 and 2 characterized by the fact that the passive vibrating elements (7) are proportionable and configurable with different structures, depending on the applications in empty compartments (1) differently configured, and in function of their mass calculated and calibrated with respect to the loudspeakers (6) to which they are associated. 4) Elementi passivi in volumi chiusi, per altoparlanti secondo le rivendicazioni 1, 2 e 3 caratterizzati dal fatto di essere dedicati ad applicazioni specifiche per autoveicoli, dove i necessari vani a volume d’aria chiuso (1) sono ricavati da vani esistenti e/o preposti, presenti tra le finiture interne di pannellerie, di cappelliere e/o di altre zone simili. 4) Passive elements in closed volumes, for loudspeakers according to claims 1, 2 and 3 characterized by the fact that they are dedicated to specific applications for motor vehicles, where the necessary closed air volume compartments (1) are obtained from existing compartments and / or persons in charge, present among the internal finishes of panels, hat boxes and / or other similar areas. 5) Elementi passivi in volumi chiusi, per altoparlanti secondo le rivendicazioni da 1 a 4 caratterizzati dal fatto che i vani vuoti (1) a volume d’aria chiuso, necessari al funzionamento specifico dei sistemi acustici ad elevata efficienza alle basse frequenze e a parità di dimensioni, costituiti da elementi passivi (7) posti su centratori o cerniere od elementi smorzanti (9) e funzionanti in accordo con altoparlanti (6) che sfruttano lo stesso volume d’aria disponibile, sono ricavati dallo sfruttamento parziale o totale dei vani esistenti tra le finiture interne di pannellerie, di cappelliere e/o di altre zone simili, oppure sono realizzabili in modo adeguato agli specifici funzionamenti, in fase di allestimento delle medesime carrozzerie dei veicoli. 5) Passive elements in closed volumes, for loudspeakers according to claims 1 to 4 characterized by the fact that the empty compartments (1) with closed air volume, necessary for the specific operation of high efficiency acoustic systems at low frequencies and with the same dimensions, consisting of passive elements (7) placed on centering devices or hinges or damping elements (9) and operating in accordance with loudspeakers (6) that exploit the same volume of air available, are obtained from the partial or total exploitation of the existing compartments between the internal finishes of panels, overhead racks and / or other similar areas, or they can be made in a manner suitable for specific operations, during the preparation of the same vehicle bodies. 6) Elementi passivi in volumi chiusi, per altoparlanti come descritti con la riserva espressa nell’ ultimo periodo della parte descrittiva, come esemplificativamente illustrati, secondo le rivendicazioni precedenti e per gli scopi specificati. 6) Passive elements in closed volumes, for loudspeakers as described with the reservation expressed in the last sentence of the descriptive part, as illustrated by way of example, according to the previous claims and for the specified purposes.
ITRE980117 1998-11-23 1998-11-23 PASSIVE ELEMENTS IN CLOSED VOLUMES, FOR SPEAKERS IT1305338B1 (en)

Priority Applications (9)

Application Number Priority Date Filing Date Title
ITRE980117 IT1305338B1 (en) 1998-11-23 1998-11-23 PASSIVE ELEMENTS IN CLOSED VOLUMES, FOR SPEAKERS
TR1999/02460A TR199902460A2 (en) 1998-11-23 1999-10-05 Passive elements in a closed volume for speakers
ES9902237A ES2160075B1 (en) 1998-11-23 1999-10-11 PASSIVE ELEMENT IN CLOSED VOLUMES, FOR SPEAKERS.
GB9924919A GB2344016B (en) 1998-11-23 1999-10-21 Passive elements in closed volume for loudspeakers
FR9913482A FR2786357B1 (en) 1998-11-23 1999-10-22 PASSIVE ELEMENT EQUIPPED WITH A CLOSED VOLUME FOR SPEAKER
ARP990105416 AR021856A1 (en) 1998-11-23 1999-10-27 PASSIVE ELEMENT THAT WORKS IN COMBINATION WITH AN ACTIVE AND SPEAKER SPEAKING IN AN EMPTY SPACE THAT HAS A CLOSED AIR VOLUME TO PRODUCE UNINCREMENT OF THE EFFECTIVENESS OF THE SPEAKER, IN PARTICULAR AT LOW FREQUENCIES
PL336730A PL195757B1 (en) 1998-11-23 1999-11-23 Passive element enclosed in a housing in particular for loudspeakers
DE1999156254 DE19956254C2 (en) 1998-11-23 1999-11-23 Passive element for operation with an active transducer of a loudspeaker
BR9907546A BR9907546A (en) 1998-11-23 1999-11-23 Passive element in closed volume for speaker

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ITRE980117 IT1305338B1 (en) 1998-11-23 1998-11-23 PASSIVE ELEMENTS IN CLOSED VOLUMES, FOR SPEAKERS

Publications (2)

Publication Number Publication Date
ITRE980117A1 true ITRE980117A1 (en) 2000-05-23
IT1305338B1 IT1305338B1 (en) 2001-05-04

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ITRE980117 IT1305338B1 (en) 1998-11-23 1998-11-23 PASSIVE ELEMENTS IN CLOSED VOLUMES, FOR SPEAKERS

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AR (1) AR021856A1 (en)
BR (1) BR9907546A (en)
DE (1) DE19956254C2 (en)
ES (1) ES2160075B1 (en)
FR (1) FR2786357B1 (en)
GB (1) GB2344016B (en)
IT (1) IT1305338B1 (en)
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TR (1) TR199902460A2 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005051338B3 (en) * 2005-09-28 2007-02-15 Daimlerchrysler Ag Flange for coupling loudspeaker in cavity of motor vehicle, has convex outer edge on its side turning away from hollow space, where flange is positioned in wall of existing cavity
DE102005047491B4 (en) * 2005-10-04 2011-08-18 Hyundai Motor Company Vehicle luggage rack and its reinforcement structure
JP4923657B2 (en) 2006-03-23 2012-04-25 パナソニック株式会社 Speaker device and television receiver using the speaker device

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5634461Y2 (en) * 1977-11-22 1981-08-14
JPS57175446A (en) * 1981-04-21 1982-10-28 Nissan Motor Co Ltd Car speaker system
JPS5899991U (en) * 1981-12-25 1983-07-07 クラリオン株式会社 speaker system
US4551849A (en) * 1982-05-11 1985-11-05 Nissan Motor Company, Limited Vehicle panel speaker for automotive audio system utilizing part of a vehicle panel as a sound-producing medium
JPH0787627B2 (en) * 1987-05-20 1995-09-20 本田技研工業株式会社 Speaker box
JP2528230Y2 (en) * 1987-09-08 1997-03-05 本田技研工業株式会社 Automotive speaker
JP2684836B2 (en) * 1990-10-04 1997-12-03 三菱電機株式会社 Car speaker system
DE4439461C1 (en) * 1994-11-04 1996-02-08 Daimler Benz Ag Built-in loudspeaker housing for in-car stereo system
JPH09200885A (en) * 1996-01-11 1997-07-31 Matsushita Electric Ind Co Ltd On-vehicle speaker equipment
JP3454005B2 (en) * 1996-04-03 2003-10-06 松下電器産業株式会社 Speaker device and sound reproducing device
JP3648873B2 (en) * 1996-09-30 2005-05-18 三菱電機株式会社 Vehicle acoustic device
DE19823363C1 (en) * 1998-05-18 1999-07-08 Brose Fahrzeugteile Vehicle door

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FR2786357B1 (en) 2002-12-27
GB9924919D0 (en) 1999-12-22
DE19956254A1 (en) 2000-05-25
DE19956254C2 (en) 2003-08-21
BR9907546A (en) 2000-09-12
ES2160075A1 (en) 2001-10-16
PL336730A1 (en) 2000-06-05
GB2344016B (en) 2003-02-26
TR199902460A2 (en) 2002-01-21
GB2344016A (en) 2000-05-24
AR021856A1 (en) 2002-08-07
FR2786357A1 (en) 2000-05-26
IT1305338B1 (en) 2001-05-04
ES2160075B1 (en) 2002-05-16
PL195757B1 (en) 2007-10-31

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