JP5885776B2 - Wiring configuration and wiring unit for wiring the litz wire of the driving unit - Google Patents

Description

  The present invention relates to a loudspeaker. In particular, the present invention relates to a wiring configuration for wiring a litz wire of a drive unit.

  In high fidelity loudspeaker designs, the goal is to reproduce the sound without adding colorization. The loudspeaker is designed so that the driver's diaphragm is displaced by electromagnetic force to produce vibrations, so that the original sound is emulated as accurately as possible. The principle of this design is that only the driver's diaphragm that generates sound vibrates, while the cabinet that surrounds the driver transmits conducted vibrations so that only sound waves intentionally created by the driver's diaphragm are transmitted to the listener. It is designed to absorb as much as possible. The sound waves are regenerated by a vibrating diaphragm, which is driven by a voice coil that is deflected by electromagnetic force, and from the driver chassis by an elastic rim that surrounds the diaphragm allowing it to move back and forth. Suspended. The driver chassis is typically connected to the loudspeaker cabinet by a flange joint, in which case the driver chassis flange is bolted to the exterior of the cabinet with an opening to accommodate the driver's rear portion or otherwise. It is fixed with. A ring is usually fitted between the cabinet surface and the inner surface of the driver chassis flange to seal the engagement. Patent Document 1 discloses a method and apparatus for attenuating mechanical resonance of a loudspeaker.

European Patent Application No. 0913396

  In the known construction, the litz wire of each driver is routed to individual connectors in the peripheral area of the drive unit. In addition, conventional litz wire wiring is usually mounted outside the voice coil, more precisely on the top of the voice coil. Conventionally, since the litz wire is easily damaged, the wiring is held outside the voice coil. As a result, litz wire is usually retracted from the coil as a precaution. In addition, conventional drivers typically feature a spider, which presents another problem with wiring litz wires inside the voice coil.

  An object of the present invention is to configure the wiring of the drive unit in a simple and low cost manner.

  The present invention is based on the concept of a novel wiring configuration for wiring the litz wire of the drive unit. The drive unit includes at least one driver having a voice coil formed on a cylindrical voice coil former and at least one connector for supplying power to the drive unit, and at least one litz wire is connected to the voice unit. Connected to the voice coil outside the coil former and connected to at least one connector.

  More specifically, the wiring configuration according to the present invention is described in the characterizing portion of claim 1.

  In another aspect, the object is achieved by a novel drive unit that includes a cylindrical chassis having a front end and a rear end. The drive unit includes a driver provided at the front end of the chassis. The driver himself has a voice coil former and a voice coil formed on the voice coil former. The drive unit further includes a connector provided on the chassis of the driver. The litz wire connects the voice coil to the connector. The voice coil former has at least one hole through which the litz wire is disposed, and the litz wire extends from the outside to the inside of the voice coil former and further to the connector.

  More particularly, the drive unit of the invention is characterized by what is stated in the characterizing part of claim 5.

  Many advantages are obtained with the help of the present invention.

  Since the litz wire can be terminated with a single connector on the chassis of the bi-directional drive unit, the number of lead-in wires for the litz wire can be reduced. This arrangement has the further advantage of improving the ventilation of the midrange driver voice coil.

  In the following, certain preferred embodiments of the invention will be described with reference to the accompanying drawings.

It is detailed sectional drawing of a drive unit attachment structure. It is sectional drawing of a loudspeaker structure. FIG. 3 is a front and rear isometric views of the first drive unit of FIGS. 1 and 2. Figure 3 is a rear isometric view of the front half of the loudspeaker cabinet according to Figure 2; FIG. 3 is a detailed cross-sectional view of the low frequency drive unit mounting configuration according to FIG. FIG. 6 is a detailed cross-sectional view of the attachment configuration of FIG. 5. FIG. 3 is a diagram of a wiring configuration according to an embodiment of the drive unit of FIG. FIG. 8 is a further isometric view of the wiring configuration of FIG. 7.

  As shown in FIG. 1, a first drive unit 200 is placed in the cabinet 100 by applying an elastic suspension attachment that surrounds the new perimeter. In principle, the cabinet 100 can be changed in any number of materials, shapes and sizes. Of special interest, however, are loudspeaker cabinets and loudspeakers that are mounted in-wall, ie flush. The cabinet 100 may be a loudspeaker cabinet made of a molding material, most preferably a pressure cast aluminum compound.

  The cabinet 100 is provided with at least one opening 101, 102 in which the drive units 200, 300 are substantially embedded. In this regard, being substantially embedded means that the point at which the drive units 200, 300 are mounted within the cabinet 100 is within the outer surface of the cabinet 100. In other words, the diaphragm of the substantially embedded drive unit can be outside the surface of the cabinet 100, for example. As shown in FIGS. 2 and 4, the loudspeaker cabinet 100 has a first opening 101 corresponding to the attachment of the first drive unit 200 and a second opening corresponding to the attachment of the second drive unit 300. An opening 102 is provided. Embedded in the first opening 101 is a first drive unit enclosure 110 that is adapted to surround the first drive unit 200. Alternatively, the cabinet 100 may feature only one drive unit 200. Accordingly, the inner profile of the enclosure 110 preferably matches the cross-sectional shape of the drive unit 200. In FIG. 1, both the first drive unit 200 and the inner profile of the enclosure 110 share a cylindrical shape, which is most advantageous for manufacturing.

  As shown in detail in FIG. 3, the first drive unit 200 includes a cylindrical chassis 201, and two drivers 210 and 220 are coaxially fitted to the front end of the cylindrical chassis 201. Thus, according to the inventive concept, the drive unit can comprise any number of drivers. Of course, the first drive unit 200 may be configured to include only one driver. However, the first drive unit 200 preferably comprises two coaxial drivers 210, 200 and the second drive unit 300 comprises a single driver. In this regard, the terms forward and backward refer to the direction, the forward direction means the direction in which sound waves are mainly emitted from the loudspeaker, i.e. the direction approaching the sound receiver in which the movement of the diaphragm is assumed. Conversely, the backward direction refers to the opposite of the forward direction. The outer driver is a medium frequency driver 220 and the inner driver is a high frequency driver 210. A preferred coaxial drive unit structure is disclosed in WO 2009/109228, which is incorporated herein by reference. Since the drivers 210, 220 are preferably mounted on the chassis 201, the acoustic axis 202 of the drivers 210, 220 and the rotational symmetry axis of the first drive unit 200 are coaxial, which is advantageous for the design and manufacture of the cabinet 100. is there. Since the first drive unit 200 shares its acoustic axis 202 with the drivers 210, 220, the cabinet 100 can be configured to have accurate directivity, especially in flush mounting applications. In this regard, the direction of the average rotational symmetry axis of the first drive unit 200 is referred to as the axial direction. The axial direction of the drive unit having a rotationally asymmetric cross section is substantially the central axis of the unit, preferably coaxial with the acoustic axis of the driver. Each of the directions orthogonal to the axial direction is referred to as a radial direction.

  The drive unit chassis 201 surrounds the drivers 210, 220 and provides the foundation for the modular drive unit, and this mounting can be reproduced in various applications by using only one type of drive unit. it can. The chassis 201 supports the inner contents of the drive unit 200 such as a magnet and the support structure of the drivers 210 and 220. The cylindrical chassis 201 of the drive unit 200 is provided with at least three sealing surfaces 204. As shown in FIG. 3, the rear and front plates of the chassis 201 have outer annular sealing surfaces to which the rear and front axial dampers are adapted during mounting assembly. Similarly, a groove for receiving a radial damper is provided in the jacket of the chassis 201 (FIG. 1). The damper will be described in more detail below. These sealing surfaces 204 of the drive unit chassis 201 serve as attachment points. As will be described later, different drive units may feature different attachment points. Generally speaking, the point at which the drive unit is fixed to the cabinet is consequently regarded as the attachment point. In the conventional drive unit, the attachment point is located on the inner surface of the flange of the drive unit, and the drive unit is connected to the front surface of the cabinet.

  The first drive unit 200 is attached in a first drive unit enclosure 110 embedded in the cabinet 100. Although the enclosure 110 can be a separate housing, as shown in FIG. 4, the enclosure 110 is preferably made integral with the rest of the cabinet 100 structure, for example, by molding. The enclosure 110 includes a housing 111, and the inner profile of the housing 111 is designed to incorporate the drive unit 200. Therefore, the enclosure 110 can be regarded as a means for fixing the drive unit 200 to the cabinet 100. As described above, the preferred shape of the inner profile of the housing 111 is cylindrical for manufacturing reasons. A circular back plate 112 is fitted to the rear end of the housing 111 to seal the rear end of the enclosure 110. According to one aspect of securing the first drive unit, the means for securing the drive unit 200 to the cabinet 100 is configured to attach the drive unit 200 outbound from the inside of the cabinet 100. As a contribution to the close engagement, the back plate 112 is provided with through holes, and the rear surface of the housing 111 is provided with respective screw holes corresponding to the screw attachment portions. The engagement is further sealed by a seal that can be provided in series with a rear axial damper (described later) or by a conventional circular seal, i.e. an O-ring. In each case, the front end of the enclosure 110 is partially closed by the inner surface of the outer periphery of the opening 101 of the cabinet 100. In other words, the front end of the enclosure 110 surrounds the opening 101 inside the cabinet 100, whereby its inner surface forms a flange that forms the annular front plate 113 of the drive unit enclosure 110.

  This annular front plate 113 is used to attach the front end of the drive unit 200 to the enclosure 110 and thus to the cabinet 100. The inner surface of the partial forward plate 113 is adapted to engage the forward axial damper 412 shown in FIG. According to one embodiment, the front axial damper 412 is a circular rubber seal that seals the front surface of the drive unit chassis 201 against the inner surface of the annular front plate 113 of the enclosure 110. The forward axial damper 412 may also be by alternative means such as a plurality of small cylindrical axial dampers, such as coils distributed along the space between the drive unit 200 and the annular forward plate 113. Can be provided. Generally speaking, axial suspension can be implemented in various ways.

  The front axial damper 412 forms part of the suspension means 410 between the first drive unit 200 and the cabinet 100. The first suspension means 410 is reinforced by a rear axial damper 411 fitted between the rear end of the drive unit 200 and the inner surface of the back plate 112 of the housing 110. The rear axial damper 411 is preferably shaped to provide a seal between the back plate 112 and the housing 111 and between the back plate 112 and the drive unit 200. Such a shape can be obtained by having a structure similar to the structure of the front axial damper 412. However, in this structure, the fitting surface between the back plate 112 and the housing 111 is sealed. A rear flange-like protrusion is added. Alternatively, these two seals can be provided with separate O-rings, for example. The rear axial damper 411 and the front axial damper 412 together form an axial suspension means that is driven to allow suspension in both the forward and rearward directions. The chassis 201 is adapted to be elastically suspended from the cabinet 100 from both the rear and front of the unit chassis 201. In this regard, the suspension movement is considered to start from the stationary position of the drive unit. In other words, the known suspension arrangement provides the suspension only in one direction, since the return movement from the deflection does not start from the stationary position of the drive unit but from the extreme position of the deflection.

  The drive unit mounting arrangement according to the present invention features an elastic suspension means that provides an elastic suspension to the substantially rigid cabinet 100 from both sides of the drive unit mounting point. In this regard, the term elastic refers to the fact that the part is intended to bow during its conventional use. For example, the cabinet 100 is designed not to bend under normal sound reproduction conditions, and in this context is considered rigid, i.e. not elastic. The drive unit 200 is provided with a rear radial damper 413 and a front radial damper 414 that form a radial portion of the suspension means 410 in addition to the above-described axial suspension (dampers 411, 412). The radial dampers 413, 414 are preferably simple O-rings fitted between the inner surface of the housing 111 and the respective grooves (FIG. 1) of the jacket of the drive unit chassis 201. Alternatively, the radial suspension may be provided by other means such as a plurality of string pieces arranged along the jacket of the drive unit chassis 201. The groove is preferably dimensioned to allow axial play between the radial dampers 413, 414 and the chassis 201. In other words, the groove is wide enough so that the radial dampers 413, 414 move freely in the groove and work on the principle of bearings. As a result, the radial dampers 413, 414 provide radial suspension and axial freedom between the drive unit 200 and the cabinet 100.

  The damping structure benefits from the equilibrium and resonance frequencies of the different subsystems reached by adjusting the force vector (mass, magnetic force, current) in combination with suitable isolation and attachment means. The parameters associated with the damper and mounting are defined based on the intended acoustic performance and cabinet structure, for example by using Newton's second law of motion and the equivalent mass-spring and electromechanical analogy. The These indicate that the displacement amplitude of each sub-system is maximum at the resonance frequency. Also, the entire system, eg, the first drive unit, reaches equilibrium and remains stationary if the sum of all components of the force vector acting on the unit is zero. Since some components of the force are frequency dependent, a wider band damper is preferably used by adjusting the elasticity and loss factor of the damper. In this way, dampers, such as O-rings, and associated attachment or housing mechanisms can be adjusted to minimize the displacement amplitude of the entire system. Thus, the excitation force and the speed of movement, which depend on the mass and frequency or are variable, are eliminated by selecting elastic damper means with suitable losses. This, along with the mechanical sizing of the elastic attachment and the preferred mechanical design of the housing, cancels the vibration to the desired level. In view of the above factors, a rubber O-ring having a cross-sectional diameter of 3 mm and a total diameter of 144.5 mm is advantageous in order to achieve the intended acoustic performance.

  Since the first drive unit 200 is fixed on the one hand to the cabinet 100 and suspended from the cabinet 100, the drive unit 200 is on the other hand isolated from the rest of the interior of the cabinet 100 by the drive unit enclosure 110. Isolation provides the advantage of protecting the first drive unit 200 from the pressure generated by the movement of the second drive unit when the described drive unit mounting configuration is implemented in a variety of loudspeaker applications. . Without the enclosure 110 as in the case of a conventional loudspeaker, back pressure is created in the cabinet by the vibration of the second drive unit, ie the diaphragm of the bass driver, which is exposed to the pressure fluctuations on the rear side. It affects the other driver. In other words, the movement of the diaphragm (s) of the first drive unit is hindered by the counter pressure front formed by the second drive unit, which is relative to the performance of the first drive unit. Have adverse effects. This problem is solved by using the enclosure 110 described above. As a result, the second drive unit 300 can be designed independently of the above effects. Therefore, it can be designed so as not to impair the ventilation of the diaphragm and voice coil former, thereby avoiding an increase in pressure under the diaphragm and improving the performance of the second drive unit, preferably the performance of the bass driver. The

  As shown in FIG. 2, the principle of the drive unit mounting configuration can be applied to a more conventional drive unit mounting while separating it from the cabinet 100 with respect to unintended conduction vibration. The loudspeaker second drive unit 300 is attached to a second drive unit enclosure 120 embedded in the second opening 102 of the cabinet. Alternatively, the second opening 102, along with the second drive unit enclosure 120, may be the only attachment point for a single drive unit assembly. Each cabinet 100 has a plurality of second drive units 300 and two or more such applications in applications without a first drive unit 200 or with a single or multiple first drive units 200. The attachment point can be characterized. However, in the example of FIGS. 2 and 5, the second drive unit 300 consists of one low frequency driver 310 so that they share the chassis 311. The second drive unit 300 is a coaxial drive unit including two or more nested drivers.

  As shown in detail in FIG. 6, the second drive unit enclosure 120 embedded in the second opening 102 of the cabinet 100 includes the flange and second suspension means 420 of the chassis 311 of the second drive unit. A relatively narrow housing 121 that is adapted to accommodate the housing. The second suspension means 420 includes axial dampers that are fitted on both sides of the chassis 311, that is, the chassis 311 is fitted between the rear and front axial dampers 421 and 422. The axial dampers 421 and 422 may be simple annular rubber plates, and annular grooves are provided on the front surface and the rear surface to increase elasticity. Alternatively, the axial dampers 421, 422 may be constructed from a simple suspension elastic component such as a rubber ring having an annular inner groove to which the flange of the chassis 311 is fitted as shown in FIG. it can. As can also be seen, the single rubber ring also forms a radial damper 423 that is adapted to provide an elastic radial suspension between the second drive unit 300 and the cabinet. To do. Therefore, the contact point between the flange of the chassis 311 and the axial damper is the attachment point of the second driver. The axial dampers 421 and 422 and the flange of the chassis 311 are preferably supported from the front by the inner surface of the outer periphery of the second opening 102 of the cabinet. This inner surface forms a flange that forms the annular front plate of the second drive unit enclosure 120 (see the annular plate 113 of the first enclosure 110). By having a fixed integral part of the cabinet as the front support of the second enclosure 120, discontinuities caused by, for example, screw heads can be eliminated from the front face of the cabinet. A fixable plate can also be provided on the front support of the second drive unit enclosure.

  As further shown in FIG. 6, the rear support of the second drive unit enclosure 120 has a central hole for portions of the second drive unit 300 such as the magnet of the low frequency driver 310 and its support structure. A back plate 122 is provided. According to one aspect of fixing the second drive unit 300, the means for fixing the drive unit 300 to the cabinet 100 is configured to attach the drive unit 300 from the inside to the outside of the cabinet 100. The back plate 122 of the second enclosure 120 differs from the back plate 112 of the first enclosure 110 in that the back plate 122 isolates the enclosure 120 from the inside of the cabinet 100. Accordingly, the rear sound wave formed by the diaphragm 312 of the low frequency driver 311 can be directed toward the inside of the cabinet 100. However, the sound waves do not affect the performance of the first drive unit 200 because the first drive unit 200 is mounted in the isolated first drive unit enclosure 110. The engagement between the back plate 122 and the housing 121 of the second enclosure 120 can be performed similarly to the engagement of the first enclosure 110.

  As described above, the novel concept of attaching a drive unit can be applied to a variety of different enclosures. Although it is preferably attached to a loudspeaker enclosure, it is advantageous to apply to a configuration for a wall-embedded loudspeaker. A wall-embedded loudspeaker is usually a drive unit embedded in a wall, and the wall is provided with a recess for receiving the drive unit. In a conventional wall-embedded loudspeaker, the drive unit is bolted from the flange to the wall by screws that penetrate the wall surface. Attachment can be greatly improved by applying a similar attachment configuration as shown in FIG. In a wall-embedded application (not shown), a receiving recess and power and audio wiring are provided on the wall, in this case a drive unit, preferably the first drive unit 200 described above (FIGS. 3 and 7). Is embedded. The drive unit is surrounded against the recess by a similar front plate as shown in FIG. 1 having a circular hole that exposes the drive unit. The front plate is fixed to the wall by suitable means, for example screws. The drive unit is suspended from the wall by the suspension means described in more detail above with reference to FIG. 1 and reference numeral 410. Both the axial and radial dampers on both the front and rear of the unit provide multi-axis suspension, thereby preventing unwanted resonance surfaces from being formed by unintentional vibrations conducted to the wall Is done.

  The drive unit chassis 201 presented in FIG. 1 is a particularly advantageous way of providing a combined drive unit. This chassis provides a good situation in which the drive unit wiring is simply and inexpensively arranged. In fact, the drive unit 200 according to one embodiment is wired so that there is only one wiring channel and only one connector. In the known construction, the litz wire of each driver is routed to individual connectors in the peripheral area of the drive unit. In addition, conventional litz wire wiring is usually mounted outside the voice coil, more precisely on the top of the voice coil. Conventionally, since the litz wire is easily damaged, the wiring is held outside the voice coil. As a result, litz wire is usually retracted from the coil as a precaution. In addition, conventional drivers typically feature a spider, which presents another problem with wiring litz wires inside the voice coil.

  Arranging the Litz wires of the drivers 210, 220 to extend into the grooves of the outer or inner pole piece of the medium frequency driver 220 (FIG. 1) provides a simple wiring configuration according to one embodiment. As is apparent from FIGS. 7 and 8, the inner driver 211, that is, the litz wire 211 of the high frequency driver is linearly arranged in the groove shown in FIG. The litz wire 221 of the medium frequency driver 220 is disposed so as to pass through a hole provided in the voice coil former. These holes are sized sufficiently large to allow the voice coil former to deflect in reciprocating motion during sound reproduction. These holes also improve the ventilation of the midrange driver voice coil. The litz wire 211 is attached to a suitable wire on the outer surface of the voice coil of the driver 220, from there through the hole into the voice coil and over the channel (not shown in FIGS. 7 and 8). Advance. A connector is provided on the rear surface of the drive unit 200 (FIG. 3), and the litz wires 211 and 221 of the drivers 210 and 220 are terminated at the connector. With the help of a single connector, the drive unit 200 can be connected to the power supply very quickly, which is particularly advantageous, for example, in a loudspeaker assembly.

  The litz wire wiring arrangement of the present invention according to the embodiment described above and shown in FIGS. 7 and 8 provides a solution to the problem of wiring the litz wire to the drive unit in an advantageous manner. In practice, the described litz wire wiring configuration is also applicable to various other drive units. Therefore, based on the described embodiment, it is possible to provide a novel litz wire wiring configuration for a drive unit that includes at least one driver having a voice coil formed on a cylindrical voice coil former. . At least one litz wire, preferably two litz wires, are connected to the voice coil outside the voice coil former. The voice coil former has at least one hole through which the litz wire is placed, in which case the litz wire is routed from the voice coil outside the voice coil former to the inside of the voice coil former. Extend. The litz wire can extend inside the voice coil former, preferably to a connector behind the drive unit. Preferably, the litz wire extends into a groove in the driver's inner pole piece. The voice coil former preferably has at least two holes for at least two litz wires.

  According to a further embodiment, the drive unit is a coaxial drive unit comprising two drivers arranged coaxially. The litz wire of the inner driver is arranged as usual, and the litz wire of the outer driver is arranged as described above. Due to the holes in the outer driver's voice coil former, both driver's litz wires can extend through the same channel and terminate with the same connector. The connector can be a quick coupler, plug, solder joint, or any other suitable means for connecting the litz wire to the feeder wire.

  Finally, a drive unit with a litz wire arrangement, a mounting arrangement therefor and a preferred loudspeaker are described by way of example.

  According to one embodiment, a configuration for mounting the drive unit 200 to the cabinet 100 is proposed. The drive unit 200 has a chassis 201. The configuration includes means for fixing the drive unit 200 to the cabinet 100 from the attachment point of the chassis 201, and suspension means 411, 412 adapted between the attachment point of the chassis 201 and the cabinet 100. The suspension means 411, 412 are further adapted to elastically suspend the chassis 201 of the drive unit 200 relative to the cabinet 100 to allow both forward and rear suspension.

  According to a particular embodiment, the suspension means 411, 412 are adapted to axially suspend the chassis 201 of the drive unit 200 from both the rear and front of the chassis 201.

  According to a particular embodiment, cabinet 100 is a loudspeaker cabinet.

  According to a particular embodiment, the means for securing the drive unit 200 to the cabinet 100 is adapted to attach the drive unit 200 from the inside of the cabinet 100 to the outside.

  According to a particular embodiment, the cabinet 100 has at least one receiving opening 101 and the cabinet 100 comprises a drive unit enclosure 110 embedded in the opening 101.

  According to a particular embodiment, the drive unit enclosure 110 includes an inner profile for housing the chassis of the drive unit 200, a first end connected to the opening 101, and a first end opposite the first end. A housing 111 having two ends and a back plate 112 adapted to close the second end of the housing 111, whereby the drive unit 200 is attached to the cabinet 100 via the enclosure 110.

  According to a particular embodiment, the adjacent outer region of the opening 101 of the cabinet 100 covers a portion of the first end of the housing 111 and forms an annular front plate 113 of the enclosure 110.

  According to a particular embodiment, the suspension means 410 is adapted within the drive unit enclosure 110.

  According to a particular embodiment, the suspension means 410 includes at least one axial damper 411, 412 adapted between at least the chassis 201 of the drive unit 200 and the cabinet 100 to provide axial suspension. Including at least one radial damper 413, 414 adapted between the chassis 201 of the drive unit 200 and the cabinet 100 to provide radial suspension.

  According to a particular embodiment, the suspension means 410 includes at least one axial damper 411, 412 adapted between at least the chassis 201 of the drive unit 200 and the enclosure 110 to provide axial suspension. Including at least one radial damper 413, 414 adapted between the chassis 201 of the drive unit 200 and the enclosure 110 to provide radial suspension.

  According to a particular embodiment, at least one rear axial damper 411 is provided between the chassis 201 of the drive unit 200 and the back plate 112 of the enclosure 110.

  According to a particular embodiment, at least one axial damper 412 is provided between the chassis 201 of the drive unit 200 and the front plate 113.

  According to a particular embodiment, the at least one radial damper 413, 414 is an O-ring.

  According to a particular embodiment, the at least one axial damper 411, 412 is a circular rubber ring.

  According to a particular embodiment, drive unit 200 is a coaxial drive unit that includes a high frequency driver 210 nested within a medium frequency driver 220.

  According to a particular embodiment, the chassis 201 of the drive unit 200 is cylindrical.

  According to a particular embodiment, the loudspeaker comprises a cabinet 100 having at least one opening 101, at least one drive unit 200 substantially embedded in the opening 101, the drive unit 200 and the cabinet 100. Suspension means 410 adapted to provide engagement between the two and axial suspension. At least one drive unit 200 is attached to the cabinet 100 by a wiring configuration according to the above-described embodiment. That is, the drive unit 200 has a chassis 201. The configuration includes means for fixing the drive unit 200 to the cabinet 100 from the attachment point of the chassis 201, and suspension means 411, 412 adapted between the attachment point of the chassis 201 and the cabinet 100. The suspension means 411, 412 are further adapted to elastically suspend the chassis 201 of the drive unit 200 relative to the cabinet 100 to allow both forward and rear suspension.

  According to a particular embodiment, the loudspeaker comprises at least a first drive unit 200 and a second drive unit 300.

  According to a particular embodiment, the first drive unit 200 is a coaxial drive unit that includes a high frequency driver 210 nested within a medium frequency driver 220.

  According to a particular embodiment, the second drive unit 300 includes at least a low frequency driver 310.

DESCRIPTION OF SYMBOLS 100 Loudspeaker cabinet 101 1st opening part 102 2nd opening part 110 1st drive unit enclosure 111 Housing 112 back plate 113 Annular front plate 120 2nd drive unit enclosure 121 Housing 122 Back plate 200 1st drive Unit 201 first drive unit chassis 202 acoustic shaft 203 radial shaft 204 sealing surface 210 high frequency driver 211 litz wire 220 medium frequency driver 221 litz wire 300 second drive unit 302 acoustic shaft 303 radial shaft 310 low frequency driver 311 Low-frequency driver chassis 312 Low-frequency driver diaphragm 400 Suspension means 410 First suspension means 411 First rear axial damper Par 412 First forward axial damper 423 Second radial damper 414 First forward radial damper 420 Second suspension means 421 Second rear axial damper 422 Second forward axial damper 413 First Rear radial damper

Claims (4)

A drive unit (200),
A cylindrical chassis (201) with a front end and a rear end;
An outer driver (220) provided at the front end of the chassis (201), the outer driver (220) having a voice coil former and a voice coil formed on the voice coil former;
Connectors provided on the chassis (201) and the outer driver (220);
A litz wire connecting the voice coil to the connector;
Including
The voice coil former has at least one opening, through which the litz wire extends from the outside to the inside of the voice coil former and to the connector;
The drive unit (200) is coaxial with the outer driver (220) and includes an inner driver surrounded by the outer driver (220), and the litz wire of the inner driver (210) is connected to the outer driver (220). Extending to the inside of the voice coil former, the litz wire of the outer driver (220) is configured to extend from the outside to the inside of the voice coil former through the at least one opening and to the connector; The drive unit (200), wherein the litz wires of the inner driver (210) and the outer driver (220) extend in the same channel and terminate with respect to the same connector. The drive unit (200) according to claim 1, wherein the connector is provided at a rear end of the drive unit (200), and the litz wire extends inside the voice coil former and to the connector. ). 3. The outer driver (220) comprises two of the litz wires and the voice coil former of the outer driver (220) comprises two corresponding openings. The drive unit (200) described. The outer driver (220) is attached to the chassis (201), and an acoustic axis (202) of the inner driver (210) and the outer driver (220) and a rotational symmetry axis of the first driving unit (200) are provided. 4. Drive unit (200) according to claim 1 or 3, characterized in that it is coaxial.

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