DE830354C - Loudspeaker for the reproduction of high frequencies with a pressure-relieved membrane - Google Patents

Loudspeaker for the reproduction of high frequencies with a pressure-relieved membrane

Info

Publication number
DE830354C
DE830354C DEP22009A DEP0022009A DE830354C DE 830354 C DE830354 C DE 830354C DE P22009 A DEP22009 A DE P22009A DE P0022009 A DEP0022009 A DE P0022009A DE 830354 C DE830354 C DE 830354C
Authority
DE
Germany
Prior art keywords
membrane
loudspeaker
relieved
pressure
reproduction
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
DEP22009A
Other languages
German (de)
Inventor
Alexander Schaaf
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
Application filed by Individual filed Critical Individual
Priority to DEP22009A priority Critical patent/DE830354C/en
Application granted granted Critical
Publication of DE830354C publication Critical patent/DE830354C/en
Expired legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00Details of transducers, loudspeakers or microphones
    • H04R1/20Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/22Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only 
    • H04R1/225Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only  for telephonic receivers

Landscapes

  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)

Description

Gegenstand der Erfindung ist ein Lautsprecher für die Wiedergabe hoher Frequenzen mit druckentlasteter und gedämpfter Membran. Zur übertragung großer Frequenzbereiche teilt man in der Regel die Tonfrequenzlast auf mehrere besonders für die Wiedergabe hoher und tiefer Frequenzen gezüchteter Lautsprecher auf.The invention relates to a loudspeaker for high playback Frequencies with pressure-relieved and damped membrane. For the transmission of large frequency ranges the audio frequency load is usually divided into several, especially for playback high and low frequencies of bred loudspeakers.

Die gemeinsame Anordnung der Tieftonlautsprecher zusammen mit Hochtonlautsprechern in der üblichen Weise in einem einzigen Schallbrett hat den Nachteil, daß das von den Tieftonlautsprechern erzeugte Schallfeld auf die Meinbrane der Hochton,lautsprecher und deren Antriebsteile, wie z. B. die Schwingspule bei elektrodynamischen Lautsprechern, rückwirkt. Abgesehen von der dadurch bewirkt-en Verringerung des Wirkungsgrades der Tieftonlautsprecher entstehen dabei nichtlineare Verzerrungen an den Hochtonlautsprechern, wenn deren Schwingspule im Rhythmus der tiefen Frequenzen aus dem homogenen Magnetfeld herausbewegt wird.The common arrangement of the woofers together with the tweeters in the usual way in a single soundboard has the disadvantage that the the woofers generated sound field on the Meinbrane of the tweeters and their drive parts, such as. B. the voice coil in electrodynamic loudspeakers, reacts. Apart from the resulting reduction in efficiency the woofer creates non-linear distortion on the tweeter, if their voice coil in the rhythm of the low frequencies from the homogeneous magnetic field is moved out.

Es sind nun Lautsprecherkombinationen bekanntgeworden, bei denen die Hochtonlautsprecher dadurch der Einwirkung der Tieftonlautsprecher entzogen werden, daß sie nicht unmittelbar in einem gemeinsamen Schallbrett zusammen mit den Tieftonlautsprechern eingebaut werden, sondern vor dem Schallbrett oder in ein-er Vertiefung desselben. Dadurch wird für tiefe Frequenzen, deren Wellenlänge groß gegenüber den Abmessungen der Hochtonmernbran ist, ein Druckausgleich vor und hinter der Hochtonmembran sichergestellt.Loudspeaker combinations have now become known in which the Tweeters are thereby withdrawn from the effect of the woofers, that they are not directly in a common sound board together with the woofers built in, but in front of the sound board or in a recess of the same. As a result, for low frequencies, their wavelength is large compared to the dimensions the tweeter cone, pressure equalization in front of and behind the tweeter diaphragm is ensured.

Werden dieHochtonlautsprecher vor demSchallbrett angebracht, so sind sie ungeschützt, in einer Vertiefung des Schallbrettes dagegen wieder schlecht zugängig. Zudem ist der konstruktive Mehraufwand beträchtlich. Erfindungsgemäß erhalten der oder die Hochtonlautsprecher einer Lautsprecherkombination einen Lautsprecherkorb i in den Abb. i und 2, der im Gegensatz zur üblichen Ausführung ohne jede Durchbrechun,g, also geschlossen ausgeführt wird. Die Membran 2 wird an ihrem Rand 3 schallundicht am Lautsprücherkorb befestigt. Diese schallundichte Befestigung der Mernbran kann z. B. dadurch erfolgen, daß der Membranrand mit Ausschnilten4 versehen wird.If the tweeters are installed in front of the sound board, they are unprotected, but are again difficult to access in a recess in the sound board. In addition, the additional design effort is considerable. According to the invention, the tweeter or tweeters of a loudspeaker combination receive a loudspeaker basket i in FIGS. I and 2, which, in contrast to the usual design, is designed without any breakthrough, g, that is, closed. The membrane 2 is attached to the loudspeaker basket at its edge 3 in a sound-proof manner. This sound-proof attachment of the Mernbran can, for. B. be done in that the membrane edge is provided with Ausnilten4.

Eine solche Ausführung des Hochtonlautsprechers ermöglicht seine Befestigung in der üblichen Weise zusammen mit den Tieftonlautsprechern einerLautsprecherkombination auf einem Schallbrett. Die Abb. 3 und 4 zeigen ein Ausführungsbeispiel hierzu. In diesen Abbildungen ist 7 ein Hochtonlautsprecher, 8 ein Tieftonlautsprecher und 9 das gemeinsame Schallbrett.Such a design of the tweeter enables it to be attached in the usual way together with the woofers of a loudspeaker combination on a sound board. Figs. 3 and 4 show an embodiment of this. In these figures 7 is a tweeter, 8 is a woofer and 9 is the common sound board.

Außer den schon genannten Vorteilen einer solchen Ausführung erlaubt der geschlossene Korb eine Dämpfung der ganzen Membranfläche des Hochtonlautsprechers durch Einfügen von schwingun-gszehrendem Material io (vgl. Abb. i und 2) zwischen Membran und Korb und damit eine wirkungsvolle Unterdrückung von Partiaischwingungen der Membran.In addition to the advantages already mentioned, such a design is permitted the closed basket damps the entire membrane surface of the tweeter by inserting vibration-reducing material io (see Fig. i and 2) between Membrane and basket and thus an effective suppression of partial vibrations the membrane.

Claims (2)

PATENTANSPRÜCHE: i. Hochtonlautsprecher, dadurch gekennzeichnet, daß derLautsprecherkorb keineDurchbrechungen besitzt und die Membran an ihrem Rande schallundicht gelagert ist. PATENT CLAIMS: i. Tweeter, characterized in that the loudspeaker frame has no openings and the membrane is mounted in a sound-tight manner at its edge. 2. Hochtonlautsprecher nach Anspruch i, dadurch gekennzeichnet, daß zwischen der ganzen Fläche der Membran und dem Lautsprecherkorb ein Polster aus schwingungsdämpfendem Material vorgesehen ist.2. Tweeter according to claim i, characterized in that that between the entire surface of the membrane and the speaker frame a cushion made of vibration-damping material is provided.
DEP22009A 1948-11-19 1948-11-19 Loudspeaker for the reproduction of high frequencies with a pressure-relieved membrane Expired DE830354C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEP22009A DE830354C (en) 1948-11-19 1948-11-19 Loudspeaker for the reproduction of high frequencies with a pressure-relieved membrane

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEP22009A DE830354C (en) 1948-11-19 1948-11-19 Loudspeaker for the reproduction of high frequencies with a pressure-relieved membrane

Publications (1)

Publication Number Publication Date
DE830354C true DE830354C (en) 1952-02-04

Family

ID=7368530

Family Applications (1)

Application Number Title Priority Date Filing Date
DEP22009A Expired DE830354C (en) 1948-11-19 1948-11-19 Loudspeaker for the reproduction of high frequencies with a pressure-relieved membrane

Country Status (1)

Country Link
DE (1) DE830354C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4116342A1 (en) * 1991-05-18 1992-11-19 Nokia Deutschland Gmbh VENTILATED SPEAKER

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4116342A1 (en) * 1991-05-18 1992-11-19 Nokia Deutschland Gmbh VENTILATED SPEAKER

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