EP2524520A1 - Electrodynamic transducer having a dome and an inner hanging part - Google Patents
Electrodynamic transducer having a dome and an inner hanging partInfo
- Publication number
- EP2524520A1 EP2524520A1 EP11707442A EP11707442A EP2524520A1 EP 2524520 A1 EP2524520 A1 EP 2524520A1 EP 11707442 A EP11707442 A EP 11707442A EP 11707442 A EP11707442 A EP 11707442A EP 2524520 A1 EP2524520 A1 EP 2524520A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- transducer
- suspension
- diaphragm
- support
- fixed
- 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
Links
Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R7/00—Diaphragms for electromechanical transducers; Cones
- H04R7/16—Mounting or tensioning of diaphragms or cones
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/02—Details
- H04R9/04—Construction, mounting, or centering of coil
- H04R9/041—Centering
- H04R9/043—Inner suspension or damper, e.g. spider
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2307/00—Details of diaphragms or cones for electromechanical transducers, their suspension or their manufacture covered by H04R7/00 or H04R31/003, not provided for in any of its subgroups
- H04R2307/025—Diaphragms comprising polymeric materials
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2307/00—Details of diaphragms or cones for electromechanical transducers, their suspension or their manufacture covered by H04R7/00 or H04R31/003, not provided for in any of its subgroups
- H04R2307/027—Diaphragms comprising metallic materials
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2307/00—Details of diaphragms or cones for electromechanical transducers, their suspension or their manufacture covered by H04R7/00 or H04R31/003, not provided for in any of its subgroups
- H04R2307/029—Diaphragms comprising fibres
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R7/00—Diaphragms for electromechanical transducers; Cones
- H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
- H04R7/12—Non-planar diaphragms or cones
- H04R7/127—Non-planar diaphragms or cones dome-shaped
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/06—Loudspeakers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/06—Loudspeakers
- H04R9/063—Loudspeakers using a plurality of acoustic drivers
Definitions
- the invention relates to the field of sound reproduction by means of loudspeakers, also called electrodynamic or electroacoustic transducers, which provide a function of converting electrical energy generally supplied by a power amplifier into acoustic energy.
- the acoustic energy is radiated by a membrane whose movements cause changes in pressure of the surrounding air, which propagate in space in the form of an acoustic wave.
- the membrane is driven by a voice coil comprising a solenoid traversed by an electric current (from the amplifier) and immersed in a gap where there is a magnetic field produced by a permanent magnet.
- the interaction between the electric current and the magnetic field produces a force known as the "LAPLACE Force", which produces a displacement of the voice coil, which carries with it the membrane whose vibrations are the source of the acoustic radiation.
- the voice coil is generally fixed on the periphery of an opening made in the center of the membrane.
- the bulk and the mass of the moving equipment are relatively large, which makes this type of architecture particularly suitable for the realization of transducers designed for the reproduction of the bass and the medium, requiring relatively low frequency membrane vibrations but large amplitude.
- the voice coil is generally attached to a peripheral edge of the membrane.
- the bulk and mass of the moving equipment can be minimized, which makes this type of architecture particularly suitable for the realization of transducers designed for the reproduction of the treble, requiring high and low frequency membrane vibrations. amplitude.
- the diaphragm is usually attached to a transducer frame via a suspension device which, in addition to its primary function of maintaining the membrane, generally fulfills three functions:
- the centering of the diaphragm and its axial guidance represent an important function of the suspension. Indeed, it is essential to exclude, or at least minimize, the transverse movements (swinging, pitching) of the membrane, generating distortions in the sound signal emitted by it.
- the spring return function which acts on the diaphragm in the manner of a spring, must be calibrated so that the resonance frequency is located in the beginning of the frequency range to be reproduced. It is easily understood that, for the reproduction of the high frequencies, the excursion of the membrane must be weak, and the suspension relatively stiff.
- peripheral suspension has, in the case of a dome-shaped membrane, several disadvantages.
- a first disadvantage is the creation of interference by the peripheral suspension (in part radiating, since driven in motion by the displacement of the voice coil) with the radiation of the dome-shaped main part of the membrane, i
- This phenomenon is particularly critical at high frequencies, where we observe for some frequency bands phase oppositions, destructive to the sensitivity level.
- the response curve of the transducer shows hollows and bumps.
- a second drawback is that a portion of the peripheral suspension is not radiating, since it is secured to the transducer frame by its outer periphery. More precisely, the radiating surface of the peripheral suspension represents only 50% of its apparent surface, which reduces the total emitting surface of the diaphragm by about one sixth (about 17%) relative to its physical surface.
- a third disadvantage is the large radial size of the transducer resulting from the large diameter of the membrane while only a part thereof is radiating.
- the radial size of the transducer is even greater than:
- the non-radiating part of the peripheral suspension necessary for fixing the dome, extends radially outside the latter and consequently occupies a peripheral space which can not be used from the point of view of sound genesis;
- the power supply of the voice coil is carried out by means of wires which extend outside the membrane and require the exoskeleton to provide a sufficient peripheral space for mounting the connecting terminals of the wires.
- a fourth disadvantage is that the architecture of the membrane is not conducive to the evacuation of calories produced by Joule effect within the voice coil.
- the exoskeleton is generally made of an electrically insulating material and thermally.
- US Pat. No. 5,471,437 discloses a dome transducer in which an annular portion of the vibrating mem- brane is received within the dome and also serves as an inner suspension of the dome. This solution seems at first interesting, but if it effectively increases the space equal to the radiator surface of the transducer, it is however likely to generate interference in the same way as the architecture suspension device described above.
- the architecture described in US Pat. No. 5,471,437 which is favorable for the tilting of the diaphragm (pitching effect), is detrimental to the proper functioning of the transducer.
- the invention aims to make a contribution to solving the problems mentioned above, by providing improvements to dome transducers.
- an electrodynamic transducer comprising:
- a moving element comprising a dome-shaped diaphragm and a moving coil integral with the diaphragm and immersed in the gap;
- the support extends at least partially in a volume internal to the diaphragm, and the suspension is made of an acoustically non-emissive material and fixed, by an outer periphery, to an inner face of the movable element.
- the suspension is preferably spaced from a peripheral outer edge of the diaphragm, being shifted inwardly therefrom.
- the support comprises a plate, on which is fixed the suspension, and a rod integral with the plate and by which the support is fixed on the magnetic circuit.
- the suspension comprises a flat internal portion fixed to the plate, and a peripheral portion surrounding the inner portion and which extends freely with respect to the platinum and is attached to the moving equipment by an outer peripheral edge.
- the support comprises a peripheral groove
- the suspension fixed by gluing to the support, is in the form of a ring whose inner edge is received in the groove.
- the transducer may further include an electrical supply circuit of the voice coil, which comprises two electrical conductors passing through the magnetic circuit and opening into the internal volume of the diaphragm.
- the plate comprises for example a rim and a central disk pierced with ventilation holes, a stripped end of each electrical conductor being connected to an eyelet crimped into one of the holes.
- the electrical circuit may further include two flexible conductors that extend into the internal volume of the diaphragm and connect each eyelet to one end of the voice coil.
- the transducer further comprises a waveguide mounted in the vicinity of the diaphragm, and having a face located opposite and in the vicinity thereof and delimiting a compression chamber.
- the suspension is preferably made of a cross-linked polymer foam, such as melamine foam.
- the invention proposes an at least two-channel coaxial loudspeaker system comprising a bass transducer designed for the reproduction of the bass and / or the medium, and an electrodynamic transducer as described above, designed for the reproduction of the treble, and mounted coaxially and frontally with respect to the bass transducer.
- the invention proposes an acoustic enclosure comprising a transducer or a coaxial loudspeaker system as described above.
- Figure 1 is a sectional view showing an acute dome transducer according to a first preferred embodiment of the invention
- Figure 2 is a sectional view of a detail of Figure 1;
- Figure 3 is a view similar to Figure 2, according to a second embodiment;
- Figure 4 is a top view of the acute transducer
- Fig. 5 is a sectional view showing a coaxial loudspeaker system comprising a main bass driver, and the treble transducer of Fig. 1, coaxially and front mounted;
- Fig. 6 is a view similar to Fig. 5, showing a coaxial speaker system comprising a main bass transducer and an acute transducer according to an alternative embodiment in which the treble transducer comprises a horn;
- Fig. 7 is a perspective view showing an enclosure including a coaxial speaker system as shown in Fig. 5.
- FIGS. 1 to 6, and in more detail in FIGS. 1 to 4, show an electrodynamic transducer 1 adapted to the reproduction of high frequencies, that is to say around 1 kHz to approximately 20 kHz.
- the transducer 1 comprises a magnetic circuit 2, which includes a central annular permanent magnet 3, sandwiched between two pole pieces forming field plates, namely a rear pole piece 4 and a front pole piece 5, fixed on two opposite faces. of the magnet 3 by gluing.
- the magnet 3 and the pole pieces 4, 5 are symmetrical about a common axis A2 forming the general axis of the transducer 1.
- the magnet 3 is preferably made of a rare earth neodymium-iron-boron alloy, which has the advantage of offering a high energy density (up to 12 times greater than that of a permanent magnet of ferrite barium).
- the rear pole piece 4 referred to as the cylinder head, is in this case one-piece and made of steel soft. It has a U-shaped cross sectional shape, and comprises a bottom 6 fixed to a rear face 7 of the magnet 3, and a peripheral side wall 8 extending axially from the bottom 6.
- the side wall 8 is ends, at a front end opposite the bottom 6, by an annular front face 9.
- the bottom 6 has a rear face 10.
- the pole piece before 5 is also made of mild steel. It is of annular shape and has a rear face 12, by which it is fixed to a front face 13 of the magnet 3, and an opposite front face 14 which extends in the same plane as the front face 9 of the wall side 8 of the cylinder head 4.
- the magnetic circuit 2 is extra-flat, that is to say that its thickness is small compared to its overall diameter. Moreover, the magnetic circuit 2 extends to the outer diameter of the transducer 1. In other words, the size of the magnetic circuit 2 is maximized with respect to the overall diameter of the transducer 1, which increases its power handling as well as the value of the magnetic field, and therefore the sensitivity of the transducer 1.
- the core 5 has an overall diameter smaller than the internal diameter of the side wall 8 of the yoke 4, so that between the core 5 and the side wall 8 of the yoke 4 is defined a gap 15 in which the major is concentrated. part of the magnetic field generated by the magnet 3.
- edges of the core 5 and the yoke 4 can be chamfered, or preferably and as shown in Figure 1, rounded so as to avoid harmful burrs.
- the transducer 1 further comprises a mobile unit 16 including a diaphragm 17 in the form of a dome and a moving coil 18 integral with the diaphragm 17.
- the diaphragm 17 is made of a rigid and light material, thermoplastic polymer or in a light alloy based on aluminum, magnesium or titanium.
- I l is positioned so as to cover the magnetic circuit 2 on the side of the core 5, and so that its axis of symmetry of revolution coincides with the axis A2.
- the apex of the diaphragm 17, located on the axis A2, can be considered as the acoustic center C2 thereof, that is to say the equivalent point source from which the acoustic radiation is emitted of the transducer 1.
- the diaphragm 17 has a circular peripheral edge 19 slightly raised to facilitate the attachment of the voice coil 18.
- the voice coil 18 comprises a conductive wire solenoid (for example copper or aluminum), spirally wound to form a cylinder whose upper end is fixed by gluing to the peripheral edge 19 raised diaphragm 17.
- the voice coil 18 is without support, but it could include one.
- the voice coil 15 is immersed in the gap 15, which may be advantageously filled with a mineral oil loaded with magnetic particles, for example of the type marketed by Ferroec under the trade name Ferrofluid (registered trademark).
- a mineral oil loaded with magnetic particles for example of the type marketed by Ferroec under the trade name Ferrofluid (registered trademark).
- Ferrofluid registered trademark
- the transducer 1 further comprises a support 20 fixed to the magnetic circuit 2, and to which is suspended the moving element 16.
- This support 20 made of a diamagnetic and electrically insulating material, for example a thermoplastic material such as polyamide, or polyoxymethylene ( loaded with glass or not), has a symmetrical general shape of revolution about an axis coincident with the axis A2, with a T-shaped section.
- the support 20 in one piece, forms an endoskeleton for the transducer 1 and comprises an annular plate 21 applied against the front face 14 of the core 5, and a cylindrical rod 22 which projects rearwardly from the center of the platinum 21, and which is housed in a complementary cylindrical location 23 formed in the magnetic circuit 2 and formed by a succession of coaxial holes in the yoke 4, the magnet 3 and the core 5, which ensure the centering of the support 20 compared to the magnetic circuit 2.
- the endoskeleton 20 is rigidly fixed to the magnetic circuit 2 by means of a nut 24 screwed on a threaded portion of the rod 22 and clamped against the yoke 4, inside a recess 25 made on the rear face 10 at its center.
- the plate 21 is firmly pressed against the front face 14 of the core 5, without the possibility of rotation.
- This attachment may optionally be supplemented by the application of a film of glue between the plate 21 and the core 5.
- the plate 21 Given its frontal location with respect to the magnetic circuit 2, the plate 21 extends into the lenticular internal volume delimited by the diaphragm 17.
- the moving element 16 is mounted on the endoskeleton 20 by means of an inner suspension 26 which provides the connection between the diaphragm 17 and the plate 21.
- This suspension 26 is in the form of a piece of revolution made of a lightweight material, elastic, and non-emissive acoustically (we can choose a porous material for this purpose).
- This material is preferably resistant to the heat prevailing in the transducer, and its elasticity is chosen so that the resonant frequency of the moving element 16 is lower than the lowest frequency reproduced by the transducer 1 (in this case 500 Hz at 2 kHz).
- the suspension 26 is of the "spider" type and made of a fabric of natural fibers (for example cotton) or synthetic (for example polyester, polyacrylic, nylon, and more particularly aramids, including Kevlar, registered trademark) or in a mixture of natural and synthetic fibers (for example cotton-polyester), these fibers being impregnated with a thermosetting or thermoplastic resin, which gives strength, stiffness and elasticity to the suspension 26 .
- natural fibers for example cotton
- synthetic for example polyester, polyacrylic, nylon, and more particularly aramids, including Kevlar, registered trademark
- aramids including Kevlar, registered trademark
- the suspension comprises an annular, planar internal portion 27 fixed by gluing on an upper face 28 of the plate 21, and a peripheral portion 29 which extends around the inner portion 27.
- the peripheral portion 29 extends radially freely to beyond the plate 21 and comprises corrugations 30 which can be obtained by thermoforming.
- the suspension 26 is fixed, by gluing, on the inner surface of the diaphragm 17, near the peripheral edge 1 9 thereof.
- the voice coil 18 comprises a cylindrical support integral with the diaphragm 17 and on which would be mounted the solenoid
- the suspension 26 could be fixed, by its outer edge, on the inner surface of this support.
- the moving element 16 must be perfectly centered with respect to the magnetic circuit 2, and more precisely with respect to the gap 15 in which the voice coil 18 is housed.
- a centering assembly (or false breech) is used in which the endoskeleton 20 is positioned.
- the centering assembly comprises a bore (of a diameter equal to that of the housing 23) into which the rod 22 is inserted. of the endoskeleton 20.
- the bonding of the suspension 26 on the plate 21 is then carried out.
- the internal diameter of the voice coil 1 8 is centered with respect to the bore of the centering assembly, which ensures the centering of the moving element 16 with respect to the endoskeleton 20.
- the assembly comprising the moving element 16 and the endoskeleton 20 can then be mounted perfectly centered in the magnetic circuit 2.
- the suspension 26 provides a return function of the moving element 16 to a median position of rest, adopted in the absence of axial stress acting on the voice coil 18 (that is, in practice, in the absence of current running through it). It is in this median position that the transducer s is shown in the figures.
- the suspension 26 also provides a function of maintaining the attitude of the diaphragm 17, that is to say of maintaining the peripheral edge 19 of the diaphragm 17 in a plane perpendicular to the axis A2, in order to avoid any tilting or pitch of the diaphragm 17 which would impair its operation.
- the electric current is fed to the voice coil 18 by two electrical circuits 32 which connect the ends of the voice coil 18 to two electrical terminals (not shown) for supplying the transducer 1.
- each electrical circuit 32 comprises:
- a conductor 33 of large section comprising a copper wire insulated by a plastic sheath, passing through the magnetic circuit 2 being housed in a groove formed longitudinally in the rod 22 of the endoskeleton 20, and a bare front end 34 opens into the internal volume to the diaphragm 17 by doing protruding magnetic circuit 2 in a hole 35 formed in the plate 21;
- an electrical joining element in the form of, for example, a metal eyelet 36 (made of copper or brass) crimped into the hole 35 and to which the stripped end 34 of the conductor 33 is electrically connected (for example via a weld spot, not shown);
- a conductor 37 of small section in the form of a very flexible and suitably shaped metallic braid which extends in the internal volume of the diaphragm 17 by stepping over the plate
- an inner end 38 is electrically connected to the eyelet 36 (for example via a weld, not shown), and an opposite outer end is electrically connected to one end of the voice coil 18.
- a single conductor 37 of small section is visible in Figure 1, the second conductor of small section, diametrically opposed to the first, being located in front of the sectional plane of the figure.
- the transducer 1 finally comprises an acoustic wave guide 39, integral with the magnetic circuit 2.
- the waveguide 39 is in the form of a single piece made of a material having a high thermal conductivity greater than 50 Wm "1.
- K ' ⁇ for example, aluminum (or an aluminum alloy).
- the waveguide 39 is fixed directly on the yoke 4 and comprises a substantially cylindrical outer side wall 40 which extends in the extension of the side wall 8 of the yoke 4.
- the fastening is preferably performed by screwing, by means of a number of screws equal to or greater than 3.
- the waveguide 39 has, on a rear peripheral edge, a skirt 41 which fits over a recess 42 made in the yoke 4, of complementary profile. This results in a precise centering of the waveguide 39 with respect to the yoke 4 and, more generally, with respect to the magnetic circuit 2 and to the diaphragm 17.
- the thermal conductivity between the two parts 4, 39 is found improved.
- the waveguide 39 has a rear face 43 having a substantially spherical cap shape, which extends concentrically with the diaphragm 17, opposite and in the vicinity of an outer face thereof that it partially covers.
- the rear face 43 is perforated and comprises a continuous peripheral portion 44 extending in the vicinity of the rear edge of the waveguide 39, and a discontinuous central portion 45 carried by a series fins 46 protruding radially from the side wall 40 inwardly (i.e. towards the axis A2 of the transducer 1).
- the rear face 43 is delimited internally - that is to say on the side of the diaphragm 17 - by a ridge 47 petaloid-shaped (clearly visible in Figure 4).
- the fins 46 do not meet on the axis A2 but stop at an inner end located at a distance from the axis A2. At their apex, the fins 46 each have a curvilinear edge 48.
- the side wall 40 of the waveguide 39 is delimited internally by a discontinuous frustoconical front face 49 distributed over a plurality of angular sectors 50 which extend between the fins 46.
- This front face 49 forms a flag primer extending from the interior to the outside and from a rear edge, formed by the petaloid ridge 47 constituting a groove of the flag primer 49, to a front edge 51 which constitutes a mouth of the flag primer 49.
- the angular sectors 50 of the flag primer 49 are portions of a cone of revolution whose axis of symmetry coincides with the axis A2, and whose generator is curvilinear (for example according to a circular law, exponential or hyperbolic).
- the flag starter 49 ensures a continuous adaptation of acoustic impedance between the air medium delimited by the groove 47 and the air medium delimited by the mouth 51.
- the tangent to the horn primer 49 on the mouth 51 forms with a plane perpendicular to the axis A2 of the transducer 1 an angle of between 30 ° and 70 °. In the example illustrated in the drawings, this angle is about 50 °.
- the fins 46 whose function in particular is to increase the exchange surface of the waveguide 39 to promote the radiation and convection dissipation of the heat produced at the moving coil 18, each laterally have two cheeks 52 which are connected externally to the angular sectors 50 of the flag primer 49 via leaves 53.
- the cheeks 52 contribute to guiding the wave generated by the diaphragm 17.
- the waveguide 39 forms not a flag primer but a complete flag (for example symmetrical about revolution about the axis A2), the groove 47 of which is circular in outline and whose mouth 51 has a diameter much greater than that of the groove 47.
- the waveguide 39 defines on the diaphragm 17 two distinct and complementary zones, namely:
- the rear face 43 of the waveguide 39 and the corresponding external covered area 55 of the diaphragm 17 define between them a volume of air 56 called a compression chamber, in which the acoustic radiation of the vibrating diaphragm 17 driven by the voice coil 18 moving in the gap 15 is not free, but compressed.
- the inner zone 54 uncovered communicates directly with the groove 47 opposite, which concentrates the acoustic radiation of the entire diaphragm 17.
- the compression ratio of the transducer 1 is defined by the quotient of the emitting surface, corresponding to the plane surface delimited by the overall diameter of the membrane 17 (measured on the edge 19), by the surface delimited by the projection, in a plane perpendicular to the axis A2, of the groove 47.
- This compression ratio is preferably greater than 1, 2: 1, and for example greater than or equal to 1, 4: 1. Rates higher compression, for example up to 4: 1, are conceivable.
- FIG. 3 shows a second embodiment of the transducer 1, which is different from the first just described by the design of the suspension 26 and the shape of the endoskeleton 20.
- the suspension 26 has a substantially polygonal shape in section and comprises an inner edge 67 right, that is to say cylindrical of revolution about the axis A2, and a peripheral outer edge 68 substantially frustoconical.
- the plate 21 substantially has the profile of a pulley and comprises a peripheral annular groove 69 which opens radially outwards, facing the inner surface of the diaphragm 17, near the edge 19 thereof.
- the groove 69 separates the plate 21 into two flanges 70, 71 facing each other, forming the side walls of the groove 69, namely a rear flange 70 bearing against the front face 14 of the core 5, and a front flange 71.
- the flanges 70,71 are connected by a cylindrical core 72 forming the bottom of the groove 69.
- the suspension 26 On the side of its internal edge 67, the suspension 26 is housed in the groove 69 (with a slight slight preload) by being fixed by gluing to the flanges 70, 71, during assembly of the moving assembly 16 in the manner described. above in the context of the first embodiment.
- a radial clearance 73 is provided between the inner edge 67 of the suspension 26 and the bottom of the groove 69.
- the suspension 26 is fixed to the inner surface of the diaphragm 17, close to the outer edge 19 thereof.
- the suspension 26 can be made in one of the non-emissive materials already described, or in a cross-linked polymer foam (for example polyester or melamine) which has the advantage of being non-emissive and of having a high porosity while having a good resistance to heat.
- a cross-linked polymer foam for example polyester or melamine
- the acute transducer 1 just described can be used individually, or, as illustrated in FIGS. 5 and 6, coupled to a bass transducer 57 to form a coaxial speaker system 58 to multiple channels, designed to cover an extended acoustic spectrum, ideally the entire audible band.
- the bass transducer 57 may be designed to reproduce the bass and / or the medium, and possibly part of the treble. For this purpose its diameter will preferably be between 10 and 38 cm.
- the main object of the present invention is not to define recommendations concerning the spectrum covered by the various transducers of the system 58, it should be pointed out however that the spectrum covered by the bass transducer 57 can cover the bass, that is, ie the band from 20 Hz to 200 Hz, or the medium, that is to say the band from 200 Hz to 2 kHz, or at least part of the bass and the medium (and for example the all of the bass and the medium), and possibly part of the treble.
- the bass transducer can be designed to cover a band of 20 Hz to 1 kHz or 20 Hz to 2 kHz, or 20 Hz to 5 kHz.
- the acute transducer 1 is preferably designed so that its bandwidth is at least complementary in the acute of that of the bass driver 57. Thus, it can be ensured that the bandwidth of the acute transducer 1 covers at least partly the medium and all of the treble, up to 20 kHz.
- the linear portions of the responses of the transducers 1, 57 overlap in part and that the sensitivity level of the acute transducer 1 is at least equal to that of the bass transducer 57, in order to avoid a fall of the overall response of the system 58 at certain frequencies corresponding to the upper part of the spectrum of the low-frequency transducer 57 and the lower part of the spectrum of the acute transducer 1.
- the bass driver 57 is of conventional architecture and we will not describe it in detail. Note however that it comprises a magnetic circuit 59 having a symmetry of revolution about an axis A1 forming the general axis of the bass transducer 57.
- the bass transducer 57 also comprises a mobile unit 60 including a conical membrane 61 of revolution about the axis A1 (with a curvilinear generatrix, for example according to a circular law, exponential or hyperbolic) and a voice coil 62 comprising a solenoid 63 wound on a cylindrical support 64 integral with the membrane 61.
- the membrane 61 defines an opening 65 on the inner edge of which the support 64 is fixed by a front end, by bonding.
- the geometric center of the opening 65 is considered, as a first approximation, to be the acoustic center C1 of the bass transducer 57, that is to say the virtual point source from which the acoustic radiation of the transducer 57 is emitted. main.
- the acute transducer 1 is housed in the bass transducer 57 while being received in a front central space (i.e. the front side of the magnetic circuit 59) delimited rearwardly by the magnetic circuit 59, and laterally by the inner wall of the support 64.
- the acute transducer 1 can be mounted in the bass transducer 57 at a time: coaxially, i.e., the axis A1 of the bass transducer 57 and the axis A2 of the acute transducer 1 are confused, - frontally, that is to say that the transducer 1 is placed in front of the magnetic circuit 59 (that is to say on the side of the magnetic circuit 59 where extends the membrane 61).
- This assembly described as “frontal” as opposed to the rear mounting in which the transducer is mounted on the rear face of the cylinder head (see for example the Tannoy US patent 4, 164,621), is made possible by the particular architecture of the treble transducer 1.
- the transducer 1 In addition to the front coaxial positioning of the transducer 1 with respect to the bass transducer 57, their respective geometries, in particular (but not only) the thicknesses of the magnetic circuits 2.59 and the curvature (and consequently the depth) of the membrane 61, are preferably adapted to allow at least approximate coincidence of the acoustic centers C1 and C2 of the transducers 1, 57, such that the temporal offset between the acoustic radiation of the transducers 1, 57 is imperceptible (this is called temporal alignment of the transducers 1 , 57).
- the system 58 can then be considered as perfectly coherent despite the duality of the sound sources.
- the axial positioning of the acute transducer 1 with respect to the bass transducer 57, and the geometry of the waveguide 39, are such that the membrane 61 extends as an extension of the flag primer 49.
- the tangent to the flag primer 49 on the mouth 51 is merged with the tangent to the membrane 61 on its central opening 65.
- the waveguide 39 and the diaphragm 61 of the bass driver 57 together form a complete horn for the transducer 1, and allowing the two transducers 1, 57 to have homogeneous directivity characteristics.
- the waveguide 39 forming a complete horn is independent of the diaphragm 61 of the bass transducer 57.
- the directivity characteristics of the two transducers 1, 57 are distinct and can be optimized separately, which is advantageous in some applications such as back-stage speakers.
- the system 58 can be mounted on any type of loudspeaker, for example a stage return speaker 66, with an inclined end face, as illustrated by way of example in FIG. 7.
- the architecture of the transducer 1 described above, associated with the acoustic properties of the suspension 26, provides the following advantages.
- the location of the suspension 26 within the dome-shaped diaphragm 17 and the production of the suspension 26 in an acoustically non-emissive material suppresses acoustic interference between the suspension 26 and the diaphragm 17.
- the fact that the suspension 26 extends inside the diaphragm 17 and not outside thereof makes it possible to increase the emitting surface to 100% of the overall diameter of the diaphragm 17.
- the architecture of the transducer 1 allows, with an overall diameter of the equal transducer, an increase in the emitting surface of up to 17%. This results in a gain in sensitivity of about 1.4 dB.
- the diameter of the voice coil 18 can be increased, being made equal to the diameter of the diaphragm 17. This results in an increase in the admissible power of the voice coil 18, proportional to the increase of its diameter. More specifically, a Increasing the diameter of the voice coil by 20% induces an equivalent gain in power handling.
- the transducer 1 is delivered from the radial space of a support external to the diaphragm 17.
- the ratio Emissive surface / Overall radial dimension (equal to the quotient of the squares of the radii of the diaphragm and the transducer), which can amount to about 70%.
- This ratio makes it possible to carry out a short axle primer 49 axially, which allows the mounting of the transducer 1 axially and frontally in a bass transducer 57, with tangential connection of the horn primer 49 to the profile of the membrane 61 of the bass transducer 57.
- the transducer 1 is delivered from the radial space of a support external to the diaphragm 17 since this support is produced by means of an endoskeleton 20.
- This aspect combined with the increase in the diameter of the voice coil 18, equal to that of the diaphragm 17, increases the diameter of the magnetic circuit 2, which can equal the overall diameter of the transducer 1, as shown in Figure 1.
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Multimedia (AREA)
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
- Diaphragms For Electromechanical Transducers (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1000155A FR2955445B1 (en) | 2010-01-15 | 2010-01-15 | ELECTRODYNAMIC TRANSDUCER WITH DOME AND INTERNAL SUSPENSION |
PCT/FR2011/000024 WO2011086301A1 (en) | 2010-01-15 | 2011-01-14 | Electrodynamic transducer having a dome and an inner hanging part |
Publications (3)
Publication Number | Publication Date |
---|---|
EP2524520A1 true EP2524520A1 (en) | 2012-11-21 |
EP2524520B1 EP2524520B1 (en) | 2019-03-06 |
EP2524520B8 EP2524520B8 (en) | 2019-05-22 |
Family
ID=42338092
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP11707442.7A Active EP2524520B8 (en) | 2010-01-15 | 2011-01-14 | Electrodynamic transducer having a dome and an inner hanging part |
Country Status (7)
Country | Link |
---|---|
US (1) | US9042594B2 (en) |
EP (1) | EP2524520B8 (en) |
CN (1) | CN102884811B (en) |
BR (1) | BR112012017574A2 (en) |
CA (1) | CA2787162C (en) |
FR (1) | FR2955445B1 (en) |
WO (1) | WO2011086301A1 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TWI492641B (en) | 2012-11-13 | 2015-07-11 | Cotron Corp | Vibrating element |
US10327068B2 (en) * | 2017-11-16 | 2019-06-18 | Harman International Industries, Incorporated | Compression driver with side-firing compression chamber |
Family Cites Families (75)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1631646A (en) | 1924-03-27 | 1927-06-07 | Gen Electric | Sound-reproducing apparatus |
US1707570A (en) | 1925-04-20 | 1929-04-02 | Gen Electric | Loud-speaker |
NL22539C (en) | 1926-08-04 | |||
US1766473A (en) | 1928-05-05 | 1930-06-24 | Bell Telephone Labor Inc | Electrodynamic device |
FR703234A (en) | 1929-09-28 | 1931-04-25 | Electrical Res Prod Inc | Improvements to electro-acoustic transformation systems such as loudspeakers |
US1930915A (en) | 1932-07-13 | 1933-10-17 | Bell Telephone Labor Inc | Acoustic device |
US2037187A (en) | 1933-03-28 | 1936-04-14 | Bell Telephone Labor Inc | Sound translating device |
US2269284A (en) | 1937-12-08 | 1942-01-06 | Rca Corp | Signal translating apparatus |
US2242791A (en) | 1939-09-01 | 1941-05-20 | Bell Telephone Labor Inc | Radio receiving system |
US2490466A (en) | 1944-07-19 | 1949-12-06 | Rca Corp | Loudspeaker diaphragm support comprising plural compliant members |
US2442791A (en) | 1945-09-07 | 1948-06-08 | Bell Telephone Labor Inc | Acoustic device |
FR1001734A (en) | 1946-08-13 | 1952-02-27 | Subalpine Apparecchiature Elet | Wide band loudspeaker with dual vibrating system |
GB652378A (en) | 1947-09-12 | 1951-04-25 | Gen Electric Co Ltd | Improvements in and relating to multi-channel pulse communication systems |
GB701395A (en) | 1951-04-23 | 1953-12-23 | Whiteley Electrical Radio Comp | Improvements in or relating to loudspeakers |
US3006430A (en) * | 1959-09-23 | 1961-10-31 | Gen Electric | Loudspeaker construction |
US3328537A (en) | 1964-01-09 | 1967-06-27 | Hecht William | High frequency sound translating device |
US3991286A (en) | 1975-06-02 | 1976-11-09 | Altec Corporation | Heat dissipating device for loudspeaker voice coil |
GB1572024A (en) | 1977-05-06 | 1980-07-23 | Tannoy Products Ltd | Moving coil loudspeakers |
US4164621A (en) | 1977-08-08 | 1979-08-14 | Amerace Corporation | Cable shield connecting device |
US4256930A (en) | 1978-02-22 | 1981-03-17 | Tannoy Products Limited | Loudspeaker having improved magnetic assembly |
JPS606593B2 (en) | 1978-07-06 | 1985-02-19 | 三菱電機株式会社 | horn speaker |
US4283606A (en) | 1979-07-16 | 1981-08-11 | Cerwin Vega, Inc. | Coaxial loudspeaker system |
US4532383A (en) | 1980-01-04 | 1985-07-30 | Willy Erazm A | Electroacoustic transducer having a variable thickness diaphragm |
GB2139040B (en) | 1983-04-25 | 1986-07-30 | Tannoy Ltd | Moving coil loudspeakers |
FR2565058A1 (en) | 1984-05-28 | 1985-11-29 | Audax | Loudspeaker diaphragm |
JPS60253399A (en) | 1984-05-30 | 1985-12-14 | Hitachi Ltd | 3-way speaker system |
US5548657A (en) * | 1988-05-09 | 1996-08-20 | Kef Audio (Uk) Limited | Compound loudspeaker drive unit |
GB8810943D0 (en) * | 1988-05-09 | 1988-06-15 | Kef Electronics Ltd | Loudspeaker |
US4933975A (en) | 1988-05-19 | 1990-06-12 | Electro-Voice, Inc. | Dynamic loudspeaker for producing high audio power |
DE68918332T2 (en) | 1988-06-02 | 1995-01-19 | Boaz Elieli | Electroacoustic transducer and loudspeaker. |
US5042072A (en) | 1989-04-14 | 1991-08-20 | Harman International Industries, Inc. | Self-cooled loudspeaker |
JPH0346292U (en) | 1989-09-14 | 1991-04-30 | ||
GB8923681D0 (en) | 1989-10-20 | 1989-12-06 | Lyth Charles D | Improvements in or relating to loudspeakers |
FR2667212B1 (en) | 1990-09-25 | 1997-05-09 | Phl Audio | ELECTROACOUSTIC POWER TRANSDUCER. |
GB2250658A (en) | 1990-12-07 | 1992-06-10 | Canon Res Ct Europe Ltd | Loudspeaker |
US5181253A (en) | 1991-01-08 | 1993-01-19 | Southern Audio Services, Inc. | Loudspeaker assembly |
IT1258008B (en) | 1992-01-14 | 1996-02-20 | COMPOUND ELECTROACOUSTIC TRANSDUCER FOR THE REPRODUCTION OF MEDIUM-HIGH FREQUENCIES | |
GB9215222D0 (en) | 1992-07-17 | 1992-09-02 | Electro Acoustic Ind Ltd | Loudspeaker |
JP2860225B2 (en) | 1993-04-09 | 1999-02-24 | 株式会社ケンウッド | Speaker structure and method of assembling the same |
EP0624049B1 (en) | 1993-04-28 | 2002-06-12 | Matsushita Electric Industrial Co., Ltd. | A loudspeaker apparatus |
DE4329982C2 (en) * | 1993-09-04 | 2003-05-28 | Sennheiser Electronic | Electrodynamic transducer |
GB9407101D0 (en) | 1994-04-09 | 1994-06-01 | Harman Motive Ltd | A modular tweeter |
FR2735646B1 (en) | 1995-06-16 | 1997-08-22 | Phl Audio | LOUDSPEAKER FOR HIGH FREQUENCIES |
DE19610997B4 (en) * | 1996-03-21 | 2006-07-13 | Sennheiser Electronic Gmbh & Co. Kg | Electrodynamic transducer with magnetic gap sealing and hearing aid |
IT1297378B1 (en) | 1997-12-05 | 1999-09-01 | B & C Speakers S P A | ELECTRODYNAMIC ACOUSTIC TRANSDUCER WITH LOW INDUCTANCE EQUIVALENT OF THE MOBILE CREW |
JPH11275678A (en) | 1998-03-25 | 1999-10-08 | Sony Corp | Loudspeaker device |
US6647122B1 (en) | 1998-09-28 | 2003-11-11 | Pioneer Electronics Technology, Inc. | Loudspeaker drive unit |
US6922477B1 (en) * | 1999-11-04 | 2005-07-26 | Matsushita Electric Industrial Co., Ltd. | Speaker |
WO2002030152A1 (en) * | 2000-10-02 | 2002-04-11 | Matsushita Electric Industrial Co., Ltd. | Speaker |
US7548631B2 (en) * | 2000-01-19 | 2009-06-16 | Harman International Industries, Incorporated | Speaker surround structure for maximizing cone diameter |
CA2352732A1 (en) | 2000-07-11 | 2002-01-11 | Philip Jeffrey Anthony | Compound loudspeaker drive unit having a magnet system |
US6792125B1 (en) | 2000-08-23 | 2004-09-14 | Boston Acoustics, Inc. | Pivotable speaker mounting apparatus |
US6774510B1 (en) | 2000-10-25 | 2004-08-10 | Harman International Industries, Inc. | Electromagnetic motor with flux stabilization ring, saturation tips, and radiator |
EP1356708B1 (en) | 2001-01-04 | 2005-08-17 | Danish Sound Technology A/S | Double-dome speaker |
US7035424B1 (en) * | 2001-05-18 | 2006-04-25 | Brandt Eugene P | Loudspeaker having an inner lead wire system and related method of protecting the lead wires |
GB2377849A (en) | 2001-07-21 | 2003-01-22 | Kh Technology Corp | Loudspeaker drive units with smooth transition to surround |
DE10207561C1 (en) * | 2002-02-22 | 2003-07-24 | Harman Becker Automotive Sys | Loudspeaker for HF audio range has elastic centring device coupled to membrane or oscillating coil system at one side and to magnetic system at other side |
DE10211086B4 (en) * | 2002-03-13 | 2006-08-10 | Harman/Becker Automotive Systems Gmbh (Straubing Division) | Loudspeakers, in particular dome speakers |
US6963650B2 (en) | 2002-09-09 | 2005-11-08 | Multi Service Corporation | Coaxial speaker with step-down ledge to eliminate sound wave distortions and time delay |
DE10303030A1 (en) * | 2003-01-25 | 2004-08-05 | Norman Gerkinsmeyer | driver |
EP1484941B1 (en) * | 2003-06-04 | 2006-09-27 | Harman/Becker Automotive Systems GmbH | Loudspeaker |
GB2404520A (en) | 2003-07-28 | 2005-02-02 | Turbosound Ltd | Phase plug equalizer used as heat sink for loudspeaker |
FR2859864B1 (en) | 2003-09-15 | 2005-12-30 | Cabasse Acoustic Ct | SPEAKER AND CORRESPONDING ACOUSTIC SPEAKER |
US6963651B2 (en) | 2003-09-30 | 2005-11-08 | Meiloon Industrial Co., Ltd. | Single magnetic circuit dual output speaker |
JP2005328336A (en) | 2004-05-14 | 2005-11-24 | Pioneer Electronic Corp | Damper for loudspeaker device, loudspeaker device using its damper, and manufacturing method for loudspeaker device |
US7379558B2 (en) | 2004-12-16 | 2008-05-27 | Jl Audio, Inc. | Loudspeaker with integrated spider standoff ring |
KR20060133749A (en) | 2005-06-21 | 2006-12-27 | 주식회사 현대오토넷 | Co-axial speaker |
EP1755357B1 (en) | 2005-07-15 | 2008-09-24 | B&C Speakers S.p.A. | Coaxial two-way drive unit for horn speakers |
FR2892887B1 (en) | 2005-11-03 | 2007-12-21 | Bernard Richoux | ELECTRO-DYNAMIC TRANSDUCER WITH FERROFLUID SUSPENSION DOME |
CN1992996B (en) | 2005-12-30 | 2012-02-29 | 丁轶 | Detachable supporting structure for loudspeaker diaphragm |
JP4739064B2 (en) | 2006-02-27 | 2011-08-03 | ミネベア株式会社 | Speaker |
GB2437125B (en) | 2006-04-13 | 2011-02-09 | Gp Acoustics | Phase plug for compression driver |
GB2437126B (en) | 2006-04-13 | 2011-02-09 | Gp Acoustics | Phase plug |
AU2007273287A1 (en) | 2006-07-12 | 2008-01-17 | Anders Sagren | High frequency diaphragm and voice coil assembly |
US20080166010A1 (en) | 2007-01-04 | 2008-07-10 | Stiles Enrique M | Overlapping surround roll for loudspeaker |
-
2010
- 2010-01-15 FR FR1000155A patent/FR2955445B1/en not_active Expired - Fee Related
-
2011
- 2011-01-14 CN CN201180012207.5A patent/CN102884811B/en not_active Expired - Fee Related
- 2011-01-14 US US13/522,250 patent/US9042594B2/en not_active Expired - Fee Related
- 2011-01-14 BR BR112012017574A patent/BR112012017574A2/en not_active Application Discontinuation
- 2011-01-14 WO PCT/FR2011/000024 patent/WO2011086301A1/en active Application Filing
- 2011-01-14 EP EP11707442.7A patent/EP2524520B8/en active Active
- 2011-01-14 CA CA2787162A patent/CA2787162C/en not_active Expired - Fee Related
Non-Patent Citations (1)
Title |
---|
See references of WO2011086301A1 * |
Also Published As
Publication number | Publication date |
---|---|
FR2955445B1 (en) | 2013-06-07 |
EP2524520B1 (en) | 2019-03-06 |
EP2524520B8 (en) | 2019-05-22 |
FR2955445A1 (en) | 2011-07-22 |
US20130070954A1 (en) | 2013-03-21 |
CN102884811B (en) | 2016-02-24 |
WO2011086301A1 (en) | 2011-07-21 |
BR112012017574A2 (en) | 2016-08-16 |
CA2787162A1 (en) | 2011-07-21 |
US9042594B2 (en) | 2015-05-26 |
CA2787162C (en) | 2018-05-22 |
CN102884811A (en) | 2013-01-16 |
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