DE3347753A1 - Frequency divider for centring magnetostatic loudspeakers - Google Patents

Frequency divider for centring magnetostatic loudspeakers

Info

Publication number
DE3347753A1
DE3347753A1 DE19833347753 DE3347753A DE3347753A1 DE 3347753 A1 DE3347753 A1 DE 3347753A1 DE 19833347753 DE19833347753 DE 19833347753 DE 3347753 A DE3347753 A DE 3347753A DE 3347753 A1 DE3347753 A1 DE 3347753A1
Authority
DE
Germany
Prior art keywords
magnetostatic
loudspeaker
loudspeakers
rest position
centring
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.)
Ceased
Application number
DE19833347753
Other languages
German (de)
Inventor
Helmut 6232 Bad Soden Kremer
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 DE19833347753 priority Critical patent/DE3347753A1/en
Priority claimed from DE19833327994 external-priority patent/DE3327994A1/en
Publication of DE3347753A1 publication Critical patent/DE3347753A1/en
Ceased 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
    • H04R3/00—Circuits for transducers, loudspeakers or microphones
    • H04R3/12—Circuits for transducers, loudspeakers or microphones for distributing signals to two or more loudspeakers
    • H04R3/14—Cross-over networks

Landscapes

  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Circuit For Audible Band Transducer (AREA)

Abstract

The circuit of this frequency divider for using magnetostatic loudspeakers in multi-path systems is derived from the main application No. 2105675. Since a magnetostatic loudspeaker has no centring for the amplitude mid-point (rest position), the latter shifts to the negative side, i.e. backwards, when conventional dividers are used. The arrangement shown in the circuit diagram prevents one-sided filtering out of lower frequencies through symmetrical positioning of the capacitors. The current flows through in each direction R = resistor and C = capacitor in the same order. The filtering of the capacitors is thus always the same, and the loudspeaker vibrates symmetrically about its rest position.

Description

Frequenzweiche zur Zentrierung magnetostatischer Lautsprecher Beschreibung der Frequenzweiche anlagen: Schaltbild, teistungstabelle 1.) Angabe der R und C - Werte: R 1 = 1,25 Ohm C 1 = 10 mF R 2 = 0,80 Ohm C 2 = 14,6 m? R 3 = 1,25 Ohm C 3 = 14,6 mF C 4 = 10 mS Ein magnetostatischer Lautsprecher hat keine mechanische Zentrierung für den Amplitudenmittelpunkt.Crossover for centering magnetostatic loudspeakers Description of the crossover systems: circuit diagram, performance table 1.) Indication of R and C - Values: R 1 = 1.25 Ohm C 1 = 10 mF R 2 = 0.80 Ohm C 2 = 14.6 m? R 3 = 1.25 ohms C 3 = 14.6 mF C 4 = 10 mS A magnetostatic loudspeaker has no mechanical Centering for the center of the amplitude.

Mit einer für seine Verwendung konstruierten Frequenzweiche erfolgt eine Zentrierung auf elektrischem Wege. Die Anord -nung der Kondensatoren C 2 und C 3 sorgt dafür, daß der Strom in jeder Richtung R und C in gleicher Reihenfolge iurchfließt, wobei der Lautsprecher als R gilt. Somit ist die Spannung am Lautsprecher in jeder Richtung gleich.Done with a crossover designed for its use a centering by electrical means. The arrangement of the capacitors C 2 and C 3 ensures that the current in each direction R and C is in the same order i flows through, where the loudspeaker counts as R. Thus the voltage is on the loudspeaker the same in every direction.

Der Restwiderstand der Kondensatoren und der des Laut --rechers ( 6 Stück a' 8 Ohm = 1,3 Ohm ) ergibt zusammen 3,3 Ohm.The residual resistance of the capacitors and that of the loudspeaker ( 6 pieces a '8 ohms = 1.3 ohms) total 3.3 ohms.

Im Tiefpaß gleicht R 1 und R 3 mit R - Lautsprecher diesen Widerstand an: 5 ts. a' 4 Ohm = 0,8 Ohm + 2 mal 1,25 Ohm = 3,3 Ohm. Zur Dämpfung der Höhen dient C 1, 0 4 und R 2.In the low-pass filter, R 1 and R 3 with R loudspeaker equals this resistance on: 5 ts. a '4 ohms = 0.8 ohms + 2 times 1.25 ohms = 3.3 ohms. To dampen the highs serves C 1, 0 4 and R 2.

Dieser Spannungsabfall wird durch die stärkeren Hochtöner neben systembedingten Hochtonabfall bei den TM - Laut -sprechern ausgeglichen. Dieser beträgt ab 2500 Hz 6 DB pro Oktave. Die Trennfrequenz der Fw. ist deshalb 2500 Hz.This voltage drop is due to the more powerful tweeters in addition to system-related The tweeter drop in the TM loudspeakers is balanced out. This is from 2500 Hz 6 DB per octave. The cut-off frequency of the Fw. Is therefore 2500 Hz.

Die Schaltung C 1, R 2, C 4 berücksichtigt den Höhenabfall.The circuit C 1, R 2, C 4 takes the drop in altitude into account.

Ihre Resistenz ist bei 20 KHz erschöpft: Restwiderstand 0,8 Ohm.Their resistance is exhausted at 20 KHz: residual resistance 0.8 ohms.

- Leerseite -- blank page -

Claims (1)

Patentanspruch Frequenzweiche für magnetostatische Lautsprecher Ein magnetostatischer Lautsprecher hat keine mechanische Zentrierung für den Amplituternittelpunkt. (Ruhelage) Mit dieser zur Verwendung magnetostatischer Lautsprecher konstruierten Brequenzweiche erfolgt eine Sentrierang auf elektrischem Wege.Crossover network for magnetostatic loudspeakers A magnetostatic loudspeaker has no mechanical centering for the center of the amplitude. (Rest position) With this designed for the use of magnetostatic loudspeakers A centering point takes place electrically. Gekennzeichnet dadurch, daß der Strom in jeder Richtung C = Kondensator,und P. = Widersand bzw. Lautsprecher in gleicher Reihenfolge durchfließt.Somit ist die Siebung der Kondensatoren in jeder Richtung gleich und der Lautsprecher schwingt symmetrisch um seine Ruhelage.Characterized by the fact that the current in each direction C = capacitor, and P. = resistance or loudspeaker flows through in the same order The capacitors are sieved in the same way in every direction and the loudspeaker oscillates symmetrical about its rest position. Als Anwendungsformel in Schaltungkennzeichen:As an application formula in circuit code:
DE19833347753 1983-07-25 1983-07-25 Frequency divider for centring magnetostatic loudspeakers Ceased DE3347753A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19833347753 DE3347753A1 (en) 1983-07-25 1983-07-25 Frequency divider for centring magnetostatic loudspeakers

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19833327994 DE3327994A1 (en) 1983-07-25 1983-07-25 Permanent-magnet dynamic loudspeaker with cylindrical radiation
DE19833347753 DE3347753A1 (en) 1983-07-25 1983-07-25 Frequency divider for centring magnetostatic loudspeakers

Publications (1)

Publication Number Publication Date
DE3347753A1 true DE3347753A1 (en) 1985-02-14

Family

ID=25812872

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19833347753 Ceased DE3347753A1 (en) 1983-07-25 1983-07-25 Frequency divider for centring magnetostatic loudspeakers

Country Status (1)

Country Link
DE (1) DE3347753A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5568560A (en) * 1995-05-11 1996-10-22 Multi Service Corporation Audio crossover circuit
US5937072A (en) * 1997-03-03 1999-08-10 Multi Service Corporation Audio crossover circuit
US6707919B2 (en) 2000-12-20 2004-03-16 Multi Service Corporation Driver control circuit

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
"Funk-Technik" Nr.4, 1960, S.111-114 *
"Funk-Technik" Nr.5, 1960, S.144, Kap. 3.1 *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5568560A (en) * 1995-05-11 1996-10-22 Multi Service Corporation Audio crossover circuit
US5937072A (en) * 1997-03-03 1999-08-10 Multi Service Corporation Audio crossover circuit
US6707919B2 (en) 2000-12-20 2004-03-16 Multi Service Corporation Driver control circuit

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