FR864516A - Loudspeaker Systems Improvements - Google Patents

Loudspeaker Systems Improvements

Info

Publication number
FR864516A
FR864516A FR864516DA FR864516A FR 864516 A FR864516 A FR 864516A FR 864516D A FR864516D A FR 864516DA FR 864516 A FR864516 A FR 864516A
Authority
FR
France
Prior art keywords
loudspeaker systems
systems improvements
loudspeaker
systems
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
Other languages
French (fr)
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.)
Loewe Opta GmbH
Original Assignee
Loewe Opta 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 Loewe Opta GmbH filed Critical Loewe Opta GmbH
Application granted granted Critical
Publication of FR864516A publication Critical patent/FR864516A/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
    • H04R9/02—Details
    • H04R9/04—Construction, mounting, or centering of coil
    • H04R9/046—Construction
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
FR864516D 1939-03-28 1940-03-28 Loudspeaker Systems Improvements Expired FR864516A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE864516X 1939-03-28

Publications (1)

Publication Number Publication Date
FR864516A true FR864516A (en) 1941-04-29

Family

ID=6801681

Family Applications (1)

Application Number Title Priority Date Filing Date
FR864516D Expired FR864516A (en) 1939-03-28 1940-03-28 Loudspeaker Systems Improvements

Country Status (1)

Country Link
FR (1) FR864516A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2808578A1 (en) * 1977-03-01 1978-09-07 Seas Fabrikker As ELECTRODYNAMIC SPEAKER
US4243838A (en) * 1978-08-23 1981-01-06 Coffey Dennis K Stiffness variation device
WO1981002072A1 (en) * 1980-01-04 1981-07-23 E Willy Variable thickness a acoustic diaphragm,voice coil arrangements for electroacoustic transducers
US5381483A (en) * 1993-04-05 1995-01-10 Commonwealth Of Puerto Rico Minimal inductance electrodynamic transducer

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2808578A1 (en) * 1977-03-01 1978-09-07 Seas Fabrikker As ELECTRODYNAMIC SPEAKER
FR2382822A1 (en) * 1977-03-01 1978-09-29 Seas Fabrikker As ELECTRODYNAMIC SPEAKER DEVICE
US4160133A (en) * 1977-03-01 1979-07-03 Wiik Tore H Moving voice coil loudspeaker with magnetic damping increasing at large excursions
US4243838A (en) * 1978-08-23 1981-01-06 Coffey Dennis K Stiffness variation device
WO1981002072A1 (en) * 1980-01-04 1981-07-23 E Willy Variable thickness a acoustic diaphragm,voice coil arrangements for electroacoustic transducers
US4532383A (en) * 1980-01-04 1985-07-30 Willy Erazm A Electroacoustic transducer having a variable thickness diaphragm
US5381483A (en) * 1993-04-05 1995-01-10 Commonwealth Of Puerto Rico Minimal inductance electrodynamic transducer

Similar Documents

Publication Publication Date Title
FR865522A (en) Improvements to telephone systems
FR1019586A (en) Automatic facsimile systems
FR860035A (en) Improvements to braking systems
FR864516A (en) Loudspeaker Systems Improvements
FR863581A (en) Improvements to television systems
FR50457E (en) Improvements to telephone systems
FR867663A (en) Modulator systems
FR853623A (en) Headquarters improvements
FR933150A (en) Improvements to television systems
FR867449A (en) Transmission systems
FR864654A (en) Modulator systems
FR860192A (en) Collimator refinements
FR862540A (en) Loudspeaker systems
FR864510A (en) Improvements to modulator systems
FR859308A (en) Respiratory System Improvements
FR931904A (en) Improvements to telephone systems
FR931429A (en) Improvements to radio-telegraph systems
FR868709A (en) Improvements to telecommunication systems
FR50504E (en) Improvements to telephone systems
FR860144A (en) Improvements to telephone systems
FR861824A (en) Improvements to telephone systems
FR863500A (en) Improvements to telephone systems
FR872188A (en) Improvements to telephone systems
FR867644A (en) Improvements to telecommunications systems
FR860598A (en) Pinpoint refinements