FR739997A - Perfectionnements apportés aux membranes pour haut-parleurs ou analogues - Google Patents

Perfectionnements apportés aux membranes pour haut-parleurs ou analogues

Info

Publication number
FR739997A
FR739997A FR739997DA FR739997A FR 739997 A FR739997 A FR 739997A FR 739997D A FR739997D A FR 739997DA FR 739997 A FR739997 A FR 739997A
Authority
FR
France
Prior art keywords
loudspeakers
membranes
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
English (en)
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.)
Lohusta Elektro Akustik G M B
Original Assignee
Lohusta Elektro Akustik G M B
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 Lohusta Elektro Akustik G M B filed Critical Lohusta Elektro Akustik G M B
Application granted granted Critical
Publication of FR739997A publication Critical patent/FR739997A/fr
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
    • 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
    • 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
    • H04R7/122—Non-planar diaphragms or cones comprising a plurality of sections or layers

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
FR739997D 1931-07-18 1932-07-15 Perfectionnements apportés aux membranes pour haut-parleurs ou analogues Expired FR739997A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1961149X 1931-07-18

Publications (1)

Publication Number Publication Date
FR739997A true FR739997A (fr) 1933-01-19

Family

ID=7789178

Family Applications (1)

Application Number Title Priority Date Filing Date
FR739997D Expired FR739997A (fr) 1931-07-18 1932-07-15 Perfectionnements apportés aux membranes pour haut-parleurs ou analogues

Country Status (3)

Country Link
US (1) US1961149A (fr)
FR (1) FR739997A (fr)
NL (1) NL37811C (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3033944A (en) * 1957-12-31 1962-05-08 Automatic Elect Lab Magnetostrictive transducer
FR2854021B1 (fr) * 2003-04-16 2006-03-31 Focal Jmlab Transducteur acoustiques en beryllium pur a radiation directe, a membrane de forme concave, pour applications audio notamment pour enceintes acoustiques

Also Published As

Publication number Publication date
US1961149A (en) 1934-06-05
NL37811C (fr)

Similar Documents

Publication Publication Date Title
FR732046A (fr) Perfectionnements aux filtres
FR712677A (fr) Perfectionnements aux paliers
FR739997A (fr) Perfectionnements apportés aux membranes pour haut-parleurs ou analogues
FR725364A (fr) Perfectionnements aux barques
FR740160A (fr) Perfectionnements aux avertisseurs acoustiques
FR711055A (fr) Perfectionnements apportés aux haut-parleurs
FR734220A (fr) Perfectionnements aux dispositifs de suspension
FR736942A (fr) Perfectionnements aux tuyères ou crépines
FR739846A (fr) Perfectionnements apportés aux procédés pour la conversion des hydrocarbures
FR728748A (fr) Perfectionnements aux miroirs
FR731319A (fr) Perfectionnements apportés aux anneaux pour rideaux ou semblables
FR764734A (fr) Perfectionnements apportés aux anneaux pour rideaux ou semblables
FR752920A (fr) Perfectionnements aux bandes de roulement
FR720259A (fr) Perfectionnements aux hélices
FR711797A (fr) Perfectionnements aux hélices
FR734599A (fr) Perfectionnements aux carburateurs
FR727027A (fr) Perfectionnements aux carburateurs
FR740257A (fr) Perfectionnements aux freins
FR730131A (fr) Perfectionnements relatifs aux appareils pour le repérage de la direction de sons
FR733001A (fr) Perfectionnements aux paliers
FR40308E (fr) Perfectionnements aux filtres
FR746032A (fr) Perfectionnements aux tuiles
FR709129A (fr) Perfectionnements aux barattes
FR759919A (fr) Perfectionnements aux hourdis
FR760001A (fr) Perfectionnements aux hourdis