GB943321A - Improvements in earphones - Google Patents

Improvements in earphones

Info

Publication number
GB943321A
GB943321A GB9887/62A GB988762A GB943321A GB 943321 A GB943321 A GB 943321A GB 9887/62 A GB9887/62 A GB 9887/62A GB 988762 A GB988762 A GB 988762A GB 943321 A GB943321 A GB 943321A
Authority
GB
United Kingdom
Prior art keywords
diaphragm
moving coil
skirt
earpiece
soft
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.)
Expired
Application number
GB9887/62A
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.)
AKG Acoustics GmbH
Original Assignee
AKG Akustische und Kino Geraete 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 AKG Akustische und Kino Geraete GmbH filed Critical AKG Akustische und Kino Geraete GmbH
Publication of GB943321A publication Critical patent/GB943321A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • H04R9/10—Telephone receivers
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Headphones And Earphones (AREA)
  • Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)

Abstract

943,321. Earphones. AKUSTISCHE U. KINO-GERATE G.m.b.H. March 14, 1962 [April 28, 1961], No. 9887/62. Heading H4J. An earphone contains a central diaphragm 4 with a moving coil 4a to reproduce high frequencies and a concentrically arranged outer diaphragm 7 with a moving coil 7a to reproduce low frequencies. The arrangement is said to have advantage in reproducing stereophonic waveforms. The moving coil 4a has a magnet 3 in a soft-iron pot 5 while the moving coil 7a has an annular magnet 6 between soft-iron annuli. The casing 1 has a flared skirt 1a to which the diaphragm is glued at its periphery 1b An earpiece 8 screws on to the skirt 1a. To permit low-frequency response of diaphragm 7 when the earpiece is not sealed closely against a user's ear, apertures 9 plugged with acoustic resistance material are provided in the skirt 1a. The moving coils 4a and 7a may both be arranged to work in the same air gap of a single magnetic system.
GB9887/62A 1961-04-28 1962-03-14 Improvements in earphones Expired GB943321A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT335061A AT224180B (en) 1961-04-28 1961-04-28 Dynamic headphones based on the two-way system

Publications (1)

Publication Number Publication Date
GB943321A true GB943321A (en) 1963-12-04

Family

ID=3549193

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9887/62A Expired GB943321A (en) 1961-04-28 1962-03-14 Improvements in earphones

Country Status (4)

Country Link
US (1) US3158697A (en)
AT (1) AT224180B (en)
DE (1) DE1163386B (en)
GB (1) GB943321A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2153628A (en) * 1984-01-27 1985-08-21 Tannoy Ltd Moving coil loudspeaker

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT320042B (en) * 1973-04-11 1975-01-27 Akg Akustische Kino Geraete At least two dynamic transducers having ear cups or transducer holder embedded in foam
AT323823B (en) * 1973-06-19 1975-07-25 Akg Akustische Kino Geraete SOUND TRANSMITTERS ACCORDING TO THE TWO-WAY SYSTEM, IN PARTICULAR FOR HEADPHONES
DE3024730C2 (en) * 1979-06-30 1982-12-23 Pioneer Electronic Corp., Tokyo Speaker system
US4497981A (en) * 1982-06-01 1985-02-05 Harman International Industries Incorporated Multi-driver loudspeaker
US4554414A (en) * 1983-04-28 1985-11-19 Harman International Industries Incorporated Multi-driver loudspeaker
CA2352732A1 (en) * 2000-07-11 2002-01-11 Philip Jeffrey Anthony Compound loudspeaker drive unit having a magnet system

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2122587A (en) * 1925-07-20 1938-07-05 Rca Corp Acoustic device
GB349630A (en) * 1929-12-03 1931-06-04 Joseph Poliakoff Improvements in loud speakers and other telephone receviers
US1951692A (en) * 1933-04-12 1934-03-20 Albert M Evens Loud speaker
FR1001734A (en) * 1946-08-13 1952-02-27 Subalpine Apparecchiature Elet Wide band loudspeaker with dual vibrating system
BE538196A (en) * 1954-05-18

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2153628A (en) * 1984-01-27 1985-08-21 Tannoy Ltd Moving coil loudspeaker

Also Published As

Publication number Publication date
AT224180B (en) 1962-11-12
DE1163386B (en) 1964-02-20
US3158697A (en) 1964-11-24

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