EP1646263A2 - Haut-parleur coaxial avec membrane de forme ondulée - Google Patents

Haut-parleur coaxial avec membrane de forme ondulée Download PDF

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Publication number
EP1646263A2
EP1646263A2 EP05020885A EP05020885A EP1646263A2 EP 1646263 A2 EP1646263 A2 EP 1646263A2 EP 05020885 A EP05020885 A EP 05020885A EP 05020885 A EP05020885 A EP 05020885A EP 1646263 A2 EP1646263 A2 EP 1646263A2
Authority
EP
European Patent Office
Prior art keywords
plate
coaxial loudspeaker
loudspeaker according
membrane
slots
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP05020885A
Other languages
German (de)
English (en)
Other versions
EP1646263A3 (fr
EP1646263B1 (fr
Inventor
Rolf Janke
Michael Hein
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ELAC Electroacustic GmbH
Original Assignee
ELAC Electroacustic GmbH
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 ELAC Electroacustic GmbH filed Critical ELAC Electroacustic GmbH
Publication of EP1646263A2 publication Critical patent/EP1646263A2/fr
Publication of EP1646263A3 publication Critical patent/EP1646263A3/fr
Application granted granted Critical
Publication of EP1646263B1 publication Critical patent/EP1646263B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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 
    • H04R1/24—Structural combinations of separate transducers or of two parts of the same transducer and responsive respectively to two or more frequency ranges
    • 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
    • H04R9/025—Magnetic circuit

Definitions

  • the invention relates to a coaxial loudspeaker with wave-shaped membrane according to the preamble of the main claim.
  • a coaxial loudspeaker two loudspeakers of different frequency ranges, e.g. a so-called “midrange” and a “tweeter” combined.
  • Tweeters with a meandering folded membrane according to the air-motion principle are known for example from the utility model DE-U1 73 22 245. There, however, a connecting member for a direct coupling via an attached to a centering rod is required, which is expensive and increases the overall length.
  • the slots are open in the front panel in the field of sound radiation and are arranged at right angles to the direction of the folds of the membrane film, a tonal very balanced reproduction is achieved because the overall linearity is significantly improved.
  • the entire unit is installed due to a square mounting plate in a rotated by 90 ° about the longitudinal axis position to be optimally used both in horizontal and vertical speakers can, in particular, to be able to use the substantially horizontal defined broad-angle radiation characteristic with horizontally extending slots ,
  • neodymium plate instead of, for example, neodymium rods, a significant improvement in the pulse fidelity can be achieved by increasing the bandwidth to now 50 kHz.
  • the sensitivity is increased in a preferred embodiment to over 90 dB / W / m in efficiency.
  • Bundlingungshackes still another sound conduction can be provided via a high or a midrange.
  • the slots have approximately a 5mm wide and 25mm long length parallel to each other in the central region of the front panel.
  • a damping plate is also provided, which exceeds the membrane membrane in dimension and this protects against direct contact with the neodymium plate, which extends the life, but also for larger deflections causes the sound fidelity.
  • the neodymium plate is finally held in a Magnethaltering spaced from a lower pole plate, wherein a sleeve which forms the wall of the closed chamber encloses the individual parts to the front panel.
  • the membrane sheet is held by a film retaining ring.
  • a front plate 16 with screw holes and five slots 26 is shown, below which a film retaining ring is present, which has in its interior a recess corresponding to the dimensions of the underlying rectangular wavy meandering membrane film 12.
  • a sound guide plate 32 and the diaphragm unit for the midrange 30 can be arranged in front of the front panel.
  • Reference numeral 36 shows a basket unit for the coaxial structure of the speaker. Within this is the voice coil of the midrange system 34, which is glued to the diaphragm 30 of the midrange. It is important that the centers of the sound-producing, used as a tweeter wavy membrane sheet 12 and another membrane unit 30 in front of the back chamber of the used as a midrange oscillating system horizontally and vertically on a plane.
  • the magnetic system belonging to the middle system consists of the parts 38a-d arranged in front of the wave-shaped corrugated sheet metal folded or corrugated membrane sheet 12.
  • the designated by reference numeral 38 a ring is preferably made of a neodymium alloy (NdFeB) or at least soft iron.
  • the associated front plate 26 is located in front of the membrane film 12.
  • a damping plate which exceeds the dimensions of both the associated neodymium plate 40 and the membrane foil 12, and is designated by reference numeral 14.
  • Numeral 10 is an iron pole core (see also Fig. 2), and 20 is a sleeve surrounding the magnet system as a whole.
  • a magnet retaining ring 22 provided with a recess for the neodymium pole and a bearing edge for the damping plate 14, and a bottom pole plate 24 is finally shown together with solder lugs 46 in the lower part of the drawing.
  • Reference numeral 42 denotes a cover cap for the mid-tone unit into which, in particular, the fourth part of the magnet system, an iron ring 38d, fits.
  • Reference numeral 44 denotes a sealing ring.
  • the entire system forms a ready-to-install, separately sealed mounting unit to cover the frequency range from 400 Hz to 50 kHz.
  • Fig. 2 are in a representation of only the magnetic structure (without coils, etc.), the two magnetic gaps, namely the midrange, located in the drawing with horizontally extending field lines gap 28 between pole core 38b and pole plate 38c, and the tweeter gap 18 (with vertical field lines in the drawing between the neodymium magnetic plate 40 and front panel 16).
  • the plane offset is chosen to be very small at 7 mm, so that successful in conjunction with the preferably in the width-length ratio of 1: 5 parallel to each other provided five slots in a too large offset resulting phasing is avoided. Due to the closed design of the invention Koaxiallaut Anlageners is a Provision a separate mid-tone chamber in a loudspeaker receiving speaker loudspeaker superfluous.
  • the coaxial loudspeaker according to the invention in addition to the wavy membrane sheet 12 in front of a closed, rear chamber for at least one high-energy permanent magnet a plate-shaped, axially magnetized magnetic element 10 and a front plate, are arranged in the slots in front of the membrane sheet 12, that the generated sound exit well At the same time, the membrane film is well mechanically protected in the tightest of spaces.
  • the rectangular membrane film allows the greatest possible passage of sound while avoiding a symmetry effect that could affect the sound passage.
  • the individual slots should therefore also end rounded.
  • a right-angle neodymium plate 10 should be selected and between neodymium plate 10 and membrane sheet 12, a damping plate 14 are provided, one of the wall of the closed chamber forming sleeve 20 enclosed magnetic retaining ring 22 for spaced from a lower pole plate 24 storage of the magnetic element 10 is used.
  • the magnetically "soft" elements 38d, 38c are then both components of a flat panel midrange assembly and an air-motion tweeter assembly.

Landscapes

  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
  • Piezo-Electric Transducers For Audible Bands (AREA)
EP05020885A 2004-10-07 2005-09-26 Haut-parleur coaxial avec membrane de forme ondulée Not-in-force EP1646263B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE202004015635U DE202004015635U1 (de) 2004-10-07 2004-10-07 Koaxiallautsprecher mit wellenförmiger Membran

Publications (3)

Publication Number Publication Date
EP1646263A2 true EP1646263A2 (fr) 2006-04-12
EP1646263A3 EP1646263A3 (fr) 2008-08-13
EP1646263B1 EP1646263B1 (fr) 2010-07-21

Family

ID=33495497

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05020885A Not-in-force EP1646263B1 (fr) 2004-10-07 2005-09-26 Haut-parleur coaxial avec membrane de forme ondulée

Country Status (3)

Country Link
EP (1) EP1646263B1 (fr)
AT (1) ATE475271T1 (fr)
DE (2) DE202004015635U1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2180721A1 (fr) 2008-10-21 2010-04-28 Lautsprecher Teufel GmbH Haut-parleur à membrane plate
JP6184478B2 (ja) 2012-05-09 2017-08-23 ジェイ． クリステンセン，ユージーン 広範囲広角ラウドスピーカドライバ

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5575398A (en) 1978-12-04 1980-06-06 Victor Co Of Japan Ltd Electro-acoustic converter possessing folding diaphragm
US20040047478A1 (en) 2002-09-09 2004-03-11 Christopher Combest Coaxial speaker with step-down ledge to eliminate sound wave distortions and time delay

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3636278A (en) * 1969-02-19 1972-01-18 Heil Scient Lab Inc Acoustic transducer with a diaphragm forming a plurality of adjacent narrow air spaces open only at one side with the open sides of adjacent air spaces alternatingly facing in opposite directions
US4056697A (en) * 1976-09-03 1977-11-01 Oskar Heil Movable diaphragm connector method flexible hinge diaphragm surround and electro-acoustic transducer with folded diaphragm with intermediate flexible portions
JPS587757Y2 (ja) * 1978-02-25 1983-02-10 澤藤 正 平面駆動型電気−音響相互変換器
AUPO832797A0 (en) * 1997-07-30 1997-08-28 Alsop, Glen Electro-acoustic transducer
JPH11275678A (ja) * 1998-03-25 1999-10-08 Sony Corp スピーカ装置
DE20207154U1 (de) * 2002-05-07 2002-09-19 Gerkinsmeyer Norman Magnetsystem und Treiber

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5575398A (en) 1978-12-04 1980-06-06 Victor Co Of Japan Ltd Electro-acoustic converter possessing folding diaphragm
US20040047478A1 (en) 2002-09-09 2004-03-11 Christopher Combest Coaxial speaker with step-down ledge to eliminate sound wave distortions and time delay

Also Published As

Publication number Publication date
DE202004015635U1 (de) 2004-12-02
EP1646263A3 (fr) 2008-08-13
EP1646263B1 (fr) 2010-07-21
ATE475271T1 (de) 2010-08-15
DE502005009938D1 (de) 2010-09-02

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