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DE550623C - Membrane for funnelless speakers - Google Patents

Membrane for funnelless speakers

Info

Publication number
DE550623C
DE550623C DEB124417D DEB0124417D DE550623C DE 550623 C DE550623 C DE 550623C DE B124417 D DEB124417 D DE B124417D DE B0124417 D DEB0124417 D DE B0124417D DE 550623 C DE550623 C DE 550623C
Authority
DE
Germany
Prior art keywords
membrane
funnelless
speakers
sparterie
production
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
DEB124417D
Other languages
German (de)
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.)
Grass & Worff Walter V
Original Assignee
Grass & Worff Walter V
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 Grass & Worff Walter V filed Critical Grass & Worff Walter V
Priority to DEB124417D priority Critical patent/DE550623C/en
Application granted granted Critical
Publication of DE550623C publication Critical patent/DE550623C/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
    • H04R7/00—Diaphragms for electromechanical transducers; Cones
    • H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Laminated Bodies (AREA)

Description

Membran für trichterlose Lautsprecher Eine Membran für trichterlose Lautsprecher muß zur Erzielung einer genügenden Lautstärke eine große Fläche und ein möglichst geringes Eigengewicht haben lind zur Erzielung einer klangtreuen Wiedergabe eine so große Steifigkeit besitzen, daß sie nur als Ganzes schwingt und keine Teilschwingungen ausführt. Die Erfindung besteht in der Wahl des für den vorliegenden Zweck geeigneten Stoffes und in der Behandlung desselben.Membrane for funnelless speakers A membrane for funnelless speakers Loudspeakers must have a large area and to achieve a sufficient volume have the lowest possible dead weight to achieve true-to-sound reproduction have such a great stiffness that it only vibrates as a whole and no partial vibrations executes. The invention consists in choosing the one suitable for the purpose at hand Substance and in the treatment of it.

Nach der Erfindung besteht die Membran aus appretierter Sparterie. Dieser Stoff stellt bekanntlich ein verhältnismäßig grobmaschiges Gewebe dar, das durch Appretur steif gemacht ist. Die Herstellung der Membran geschieht in der bei der Herstellung von Hutformen aus Sparterie bekannten Weise dadurch, daß die Sparterie nach vorheriger Erweichung über eine der gewünschten Form der Membran entsprechende Gegenform gestrichen wird. Hierbei nimmt die vorher ebene Sparterie infolge der parallelogrammartigen Verschiebung der sich kreuzenden Gewebefäden die gewünschte räumliche Form, z. B. eine Trichterform, an. Die Maschenlöcher des grobmaschigen Ge-ebes erben c#urcldie Apprerür ausgefüllt. Durch die Verwendung von Sparterie als Baustoff für die Membran ist der Vorteil dieses Baustoffes ausgenutzt, der darin besteht, daß die Sparterie in feuchtem Zustand sehr leicht formbar ist, in trockenem Zustand dagegen eine erhebliche Steifigkeit besitzt, die größer ist als sämtliche anderen gewebten Stoffe, die bisher zur Herstellung der Membran für trichterlose Lautsprecher benutzt wurden. Die aus Sparterie hergestellte Membran zeichnet sich außerdem noch durch ein geringes spezifisches Gewicht aus. Die Membran hat also bei kleinem Gewicht eine große Steifigkeit. Die aus appretierter Sparterie hergestellte Membran besitzt ferner eine sehr geringe Eigenfrequenz. Diese Eigenfrequenz tritt schwächer in Erscheinung, als es bei Membranen aus anderen Geweben der Fall ist.According to the invention, the membrane consists of a finished artery. This fabric is known to be a relatively wide-meshed fabric that is made stiff by finishing. The membrane is manufactured in the at the production of hat shapes from Sparterie known manner in that the Sparterie after previous softening over a membrane corresponding to the desired shape Counter form is deleted. Here, the previously level division takes due to the parallelogram-like displacement of the intersecting fabric threads the desired spatial form, e.g. B. a funnel shape. The mesh holes of the coarse-meshed Ge-ebes inherit c # urcldie the application filled out. By using Sparterie as a building material for the membrane, the advantage of this building material is used, which is in it insists that the artery is very easily malleable when wet, and when dry State, on the other hand, has a considerable stiffness that is greater than all of them other woven fabrics previously used to manufacture the membrane for funnelless Speakers were used. The membrane made from Sparterie stands out also characterized by a low specific weight. So the membrane has great rigidity with low weight. The one made from a finished division The membrane also has a very low natural frequency. This natural frequency occurs weaker in appearance than is the case with membranes made from other tissues.

Claims (2)

PATENTANSPRÜCHE: z. Membran für trichterlose Lautsprecher, dadurch gekennzeichnet, daß die Membran aus appretierter Sparterie besteht. PATENT CLAIMS: e.g. Membrane for funnelless loudspeakers, thereby characterized in that the membrane consists of finished Sparterie. 2. Verfahren zur Herstellung von Merr -branen nach Anspruch r, dadurch gekennzeichnet, daß die Sparterie in aer bei der Herstellung von Hutformen bekannten Weise nach vorheriger Erweichung über eine der gewünschten Form der Membran entsprechende Gegenform gestrichen wird.2. Procedure for the production of Merr -branen according to claim r, characterized in that the Sparterie in aer in the production of hat shapes known manner after previous Softening is painted over a counter-shape corresponding to the desired shape of the membrane will.
DEB124417D 1926-03-07 1926-03-07 Membrane for funnelless speakers Expired DE550623C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEB124417D DE550623C (en) 1926-03-07 1926-03-07 Membrane for funnelless speakers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEB124417D DE550623C (en) 1926-03-07 1926-03-07 Membrane for funnelless speakers

Publications (1)

Publication Number Publication Date
DE550623C true DE550623C (en) 1932-05-14

Family

ID=6996212

Family Applications (1)

Application Number Title Priority Date Filing Date
DEB124417D Expired DE550623C (en) 1926-03-07 1926-03-07 Membrane for funnelless speakers

Country Status (1)

Country Link
DE (1) DE550623C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE744286C (en) * 1937-03-02 1944-01-13 Siemens Ag Membrane produced from pulp by dipping or pouring for electroacoustic devices

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE744286C (en) * 1937-03-02 1944-01-13 Siemens Ag Membrane produced from pulp by dipping or pouring for electroacoustic devices

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