EP0793216A3 - Pressure chamber driver - Google Patents

Pressure chamber driver Download PDF

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Publication number
EP0793216A3
EP0793216A3 EP97103076A EP97103076A EP0793216A3 EP 0793216 A3 EP0793216 A3 EP 0793216A3 EP 97103076 A EP97103076 A EP 97103076A EP 97103076 A EP97103076 A EP 97103076A EP 0793216 A3 EP0793216 A3 EP 0793216A3
Authority
EP
European Patent Office
Prior art keywords
pressure chamber
membrane
voice coil
shaped
driver
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
EP97103076A
Other languages
German (de)
French (fr)
Other versions
EP0793216B1 (en
EP0793216A2 (en
Inventor
Svetlomir Alexandrov
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.)
Individual
Original Assignee
Individual
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
Priority claimed from DE19626236A external-priority patent/DE19626236C2/en
Application filed by Individual filed Critical Individual
Publication of EP0793216A2 publication Critical patent/EP0793216A2/en
Publication of EP0793216A3 publication Critical patent/EP0793216A3/en
Application granted granted Critical
Publication of EP0793216B1 publication Critical patent/EP0793216B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K9/00—Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooters or buzzers
    • G10K9/12—Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooters or buzzers electrically operated
    • G10K9/13—Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooters or buzzers electrically operated using electromagnetic driving means
    • 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 
    • H04R1/30—Combinations of transducers with horns, e.g. with mechanical matching means, i.e. front-loaded horns
    • 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
    • H04R7/14—Non-planar diaphragms or cones corrugated, pleated or ribbed
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
  • Apparatuses For Generation Of Mechanical Vibrations (AREA)

Abstract

Druckkammertreiber, mit einer in einem ringförmigen Luftspalt 2 eines Magnetsystems 1 beweglichen Schwingspule 3 und mit einer von der Schwingspule 3 angetriebenen Membran. Die Membran 5 und die Druckkammer 12 sind ringförmig ausgebildet, und die Druckkammer 12 steht über ihren Umfang mit einem zentralen Schallaustrittskanal 14 in Verbindung. Die Membran 5 hat aufgrund ihrer ringförmigen Ausbildung eine große wirksame Fläche bei gleichzeitig geringer Masse. Die Speiseleistung ist daher verhältnismäßig gering, die Resonanzfrequenz ist hoch, und damit ist auch die Wiedergabetreue hoher Frequenzen verbessert. Dies ist insbesondere dann der Fall, wenn die Membran im Querschnitt V-förmig, vorzugsgweise zu dem von ihr eingeschlossenen spitzen Winkel hin gewölbt ausgebildet ist.

Figure 00000001
Pressure chamber driver, with a voice coil 3 movable in an annular air gap 2 of a magnet system 1 and with a membrane driven by the voice coil 3. The membrane 5 and the pressure chamber 12 are ring-shaped, and the pressure chamber 12 communicates with a central sound outlet channel 14 over its circumference. The membrane 5 has a large effective area with a low mass due to its annular design. The feed power is therefore relatively low, the resonance frequency is high, and thus the fidelity of high frequencies is also improved. This is particularly the case when the membrane is V-shaped in cross-section, preferably arched toward the acute angle enclosed by it.
Figure 00000001
EP97103076A 1996-02-29 1997-02-26 Pressure chamber driver Expired - Lifetime EP0793216B1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE19607610 1996-02-29
DE19607610 1996-02-29
DE19626236 1996-06-29
DE19626236A DE19626236C2 (en) 1996-02-29 1996-06-29 Pressure chamber driver

Publications (3)

Publication Number Publication Date
EP0793216A2 EP0793216A2 (en) 1997-09-03
EP0793216A3 true EP0793216A3 (en) 1999-11-17
EP0793216B1 EP0793216B1 (en) 2003-11-19

Family

ID=26023324

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97103076A Expired - Lifetime EP0793216B1 (en) 1996-02-29 1997-02-26 Pressure chamber driver

Country Status (3)

Country Link
US (1) US5878148A (en)
EP (1) EP0793216B1 (en)
ES (1) ES2210407T3 (en)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6466680B1 (en) * 1999-10-19 2002-10-15 Harman International Industries, Inc. High-frequency loudspeaker module for cinema screen
ITPR20020064A1 (en) * 2002-10-31 2004-05-01 Aeb Srl EQUALIZER, OR PHASE PLUG, FOR ELECTROACOUSTIC TRANSDUCERS.
US20080192972A1 (en) * 2007-02-13 2008-08-14 Vernon Lewallen Phasing plug for acoustic compression drivers
GB2455563B (en) * 2007-12-14 2012-03-21 Tannoy Ltd Acoustical horn
US8077897B2 (en) 2008-06-11 2011-12-13 Harman International Industries, Incorporated Phasing plug
US8280091B2 (en) * 2008-06-11 2012-10-02 Harman International Industries, Incorporated Dual compression drivers and phasing plugs for compression drivers
JP5268203B2 (en) 2008-08-14 2013-08-21 ハーマン インターナショナル インダストリーズ インコーポレイテッド Phase plug and acoustic lens for direct radiating loudspeakers
DE102010015445B4 (en) 2010-04-17 2012-10-25 Arne Färber Coaxial
DE102012102207B3 (en) 2012-03-15 2013-08-29 BMS Speakers GmbH Ring diaphragm compression driver
US9693148B1 (en) 2014-08-08 2017-06-27 Lrad Corporation Acoustic hailing device
US10271131B2 (en) 2014-10-08 2019-04-23 Harman International Industries, Incorporated Shallow profile compression driver
CN104811874B (en) * 2015-03-16 2017-11-03 朱幕松 W type loudspeakers
US10038954B2 (en) 2016-08-22 2018-07-31 Harman International Industries, Incorporated Compression driver and phasing plug assembly therefor
US10327068B2 (en) * 2017-11-16 2019-06-18 Harman International Industries, Incorporated Compression driver with side-firing compression chamber
WO2020061304A1 (en) * 2018-09-19 2020-03-26 Polk Audio, Llc Audio transducer with forced ventilation of motor and method
WO2024153833A1 (en) 2023-01-18 2024-07-25 Estudio De Asesoramiento Jofarma, S.L.U. Electrodynamic compression transducer with variable-pressure channels

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53124413A (en) * 1977-12-02 1978-10-30 Nippon Gakki Seizo Kk Horn type speaker
GB2070389A (en) * 1980-01-30 1981-09-03 Radio Cine Forniture Rcf Spa Electroacoustic transducer
US4325456A (en) * 1980-10-10 1982-04-20 Altec Corporation Acoustical transformer for compression-type loudspeaker with an annular diaphragm
EP0390123A2 (en) * 1989-03-31 1990-10-03 Kabushiki Kaisha Kenwood Nondirectional acoustic generator and speaker system
EP0749265A1 (en) * 1995-06-16 1996-12-18 P.H.L. Audio S.A. High frequency loudspeaker

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2607198C2 (en) * 1976-02-23 1984-02-16 Fernsprech- und Signalbau Lehner & Co KG, 4330 Mülheim Dynamic drive system for pressure chamber loudspeakers
US4496021A (en) * 1983-02-18 1985-01-29 Emmanuel Berlant 360 Degree radial reflex orthospectral horn for high-frequency loudspeakers
FR2607344B1 (en) * 1986-11-21 1994-04-29 Nexo Distribution DEVICE FOR PROCESSING AN AUDIO FREQUENCY ELECTRIC SIGNAL
GB8724299D0 (en) * 1987-10-16 1987-11-18 Adamson Acoustic Design Corp Loudspeaker design
US5537481A (en) * 1994-04-05 1996-07-16 The Aws Group, Inc. Horn driver
DE4420960A1 (en) * 1994-06-16 1995-12-21 Bosch Gmbh Robert Pump device, in particular for a tank system of an internal combustion engine

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53124413A (en) * 1977-12-02 1978-10-30 Nippon Gakki Seizo Kk Horn type speaker
GB2070389A (en) * 1980-01-30 1981-09-03 Radio Cine Forniture Rcf Spa Electroacoustic transducer
US4325456A (en) * 1980-10-10 1982-04-20 Altec Corporation Acoustical transformer for compression-type loudspeaker with an annular diaphragm
EP0390123A2 (en) * 1989-03-31 1990-10-03 Kabushiki Kaisha Kenwood Nondirectional acoustic generator and speaker system
EP0749265A1 (en) * 1995-06-16 1996-12-18 P.H.L. Audio S.A. High frequency loudspeaker

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 002, no. 154 (E - 080) 25 December 1978 (1978-12-25) *

Also Published As

Publication number Publication date
US5878148A (en) 1999-03-02
EP0793216B1 (en) 2003-11-19
EP0793216A2 (en) 1997-09-03
ES2210407T3 (en) 2004-07-01

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