WO1991015934A1 - Loudspeaker cabinet - Google Patents

Loudspeaker cabinet Download PDF

Info

Publication number
WO1991015934A1
WO1991015934A1 PCT/NL1990/000043 NL9000043W WO9115934A1 WO 1991015934 A1 WO1991015934 A1 WO 1991015934A1 NL 9000043 W NL9000043 W NL 9000043W WO 9115934 A1 WO9115934 A1 WO 9115934A1
Authority
WO
WIPO (PCT)
Prior art keywords
loudspeaker box
loudspeakers
loudspeaker
reproduction
centre lines
Prior art date
Application number
PCT/NL1990/000043
Other languages
French (fr)
Inventor
Robert Jurrien Oliemuller
Original Assignee
Robert Jurrien Oliemuller
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 Robert Jurrien Oliemuller filed Critical Robert Jurrien Oliemuller
Publication of WO1991015934A1 publication Critical patent/WO1991015934A1/en

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
    • H04R5/00—Stereophonic arrangements
    • H04R5/02—Spatial or constructional arrangements of loudspeakers

Definitions

  • the invention relates to a loudspeaker box, equiped with two for the reproduction of at least the low-frequency region intended loudspeakers, of which the centre lines are crossing.
  • Such loudspeaker boxes have been commonly known in various designs.
  • a drawback of the known loudspeaker boxes is their comparative large sizes.
  • the German Offenlegungs- schrift 2.441.950 describes a loudspeaker box, by which an attempt has been made to solve this drawback by means of applying a clear transparent material in the construction, showing a smaller size.
  • the drawback of the large sizes however is not realy solved in this way.
  • the two earlier mentioned loudspeakers are housed in one enclosed space intended for the reproduction of the left respectivily right channel of a stereosignal and that the vertical distance between the centre lines of the two loudspeakers is such, that as well the corresponding magnetic fields do not influence each other as that the damping is balanced.
  • a stereo system will need only one loudspeaker box, by which due to the specific distance between the two loudspeakers a state is obtained at which the magnetic fields do not influence each other and the damping is balanced, resulting in a distortion free reproduction.
  • Fig. 1 depicts a simplefied isometric view of the design of the loudspeaker box in accordance with the
  • Fig. 2 is a cross-sectional diagram of the loudspeaker box in fig. 1.1.
  • a loudspeakerbox 1 is illustrated, in this case arranged as a bass-reflex type of loudspeaker box.
  • the basic principle of the invention is also applicable in the closed-acoustic box type of loudspeaker housing.
  • the loudspeaker box 1 is equiped with two loudspeakers 2 and 3, which are mounted on two neighbouring walls of a loudspeaker box 1 characterized by a square cross-section and an undevided volume, so that the centre lines 4, 5 of the loudspeakers 2. 3 will cross under 90 degrees.
  • the minimum vertical distance between the centre lines 4 and 5 of the loudspeakers 2 and 3 is such, that the magnetic fields of the loudspeakers 2 and 3 do not influence each other. Due to the non-interacting magnetic fields, no mutual influencing of the loudspeakers 2 and 3 will take place.
  • the vertical distance between the centre lines 4 and 5 of the loudspeakers 2 and 3 is such that the damping inside the loudspeaker box 1 is balanced and no resonance will be added to the loudspeaker box 1.
  • the loudspeaker box 1 will be positioned with one diagonal perpendicular to a wall 7 , causing the sound to be reflected into the listening room.

Abstract

The loudspeaker cabinet has two loudspeakers for reproducing the right and left channels of a stereo signal in at least the bass frequency range. The axes of the loudspeakers cross each other and their distance is such that the magnetic fields just do not touch.

Description

Loudspeaker cabinet
The invention relates to a loudspeaker box, equiped with two for the reproduction of at least the low-frequency region intended loudspeakers, of which the centre lines are crossing.
Such loudspeaker boxes have been commonly known in various designs. A drawback of the known loudspeaker boxes is their comparative large sizes. The German Offenlegungs- schrift 2.441.950 describes a loudspeaker box, by which an attempt has been made to solve this drawback by means of applying a clear transparent material in the construction, showing a smaller size. The drawback of the large sizes however is not realy solved in this way.
It is accordingly an object of the invention to provide a loudspeaker box, costructed in such a way that only one loudspeaker box is needed for the reproduction of the stereosignal and yet a natural reproduction is realized.
It is a further object of the invention, that the two earlier mentioned loudspeakers are housed in one enclosed space intended for the reproduction of the left respectivily right channel of a stereosignal and that the vertical distance between the centre lines of the two loudspeakers is such, that as well the corresponding magnetic fields do not influence each other as that the damping is balanced.
In consequence a stereo system will need only one loudspeaker box, by which due to the specific distance between the two loudspeakers a state is obtained at which the magnetic fields do not influence each other and the damping is balanced, resulting in a distortion free reproduction.
The invention will be explained hereinafter with reference to the accompaning drawing, in which an example of the design is displayed .
Fig. 1 depicts a simplefied isometric view of the design of the loudspeaker box in accordance with the
invention. Fig. 2 is a cross-sectional diagram of the loudspeaker box in fig. 1.1.
In the drawing a loudspeakerbox 1 is illustrated, in this case arranged as a bass-reflex type of loudspeaker box. The basic principle of the invention is also applicable in the closed-acoustic box type of loudspeaker housing.
The loudspeaker box 1 is equiped with two loudspeakers 2 and 3, which are mounted on two neighbouring walls of a loudspeaker box 1 characterized by a square cross-section and an undevided volume, so that the centre lines 4, 5 of the loudspeakers 2. 3 will cross under 90 degrees.
The minimum vertical distance between the centre lines 4 and 5 of the loudspeakers 2 and 3 is such, that the magnetic fields of the loudspeakers 2 and 3 do not influence each other. Due to the non-interacting magnetic fields, no mutual influencing of the loudspeakers 2 and 3 will take place. The vertical distance between the centre lines 4 and 5 of the loudspeakers 2 and 3 is such that the damping inside the loudspeaker box 1 is balanced and no resonance will be added to the loudspeaker box 1. The absence of a mutual inter-action of the magnetic fields and the balanced damping in the loudspeaker box 1 with undevided volume guarentee a distortion free reproduction of the stereo signal.
As illustrated in fig. 2 the loudspeaker box 1 will be positioned with one diagonal perpendicular to a wall 7 , causing the sound to be reflected into the listening room.
The invention is not restricted to the preceding description of the design example only, which can be varied within the scope df the invention in different ways.

Claims

1. Loudspeaker box, comprising two for the reproduction of at least the low-freguency region intended loudspeakers of which the centre lines are crossing, whereby the two mentioned loudspeakers are intended for the reproduction of the left respectivily the right channel of the stereo signal and that the vertical distance between the centre lines of the two loudspeakers is such that the corresponding magnetic fields do not influence each other and that the damping of the emitted soundwaves inside the loudspeaker box is balanced.
2. Loudspeaker box according to Claim 1, and further comprising a square cross-section as characteristic for the loudspeaker box.
3. Loudspeaker box according to Claim 2 , and further comprising an undevided inner room as characteristic for the loudspeaker box.
PCT/NL1990/000043 1988-10-11 1990-04-09 Loudspeaker cabinet WO1991015934A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL8802488A NL8802488A (en) 1988-10-11 1988-10-11 SPEAKER BOX.

Publications (1)

Publication Number Publication Date
WO1991015934A1 true WO1991015934A1 (en) 1991-10-17

Family

ID=19853028

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/NL1990/000043 WO1991015934A1 (en) 1988-10-11 1990-04-09 Loudspeaker cabinet

Country Status (3)

Country Link
EP (1) EP0498794A1 (en)
NL (1) NL8802488A (en)
WO (1) WO1991015934A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU658020B2 (en) * 1991-11-08 1995-03-30 Colin Arthur Preston Coincident spatial loudspeaker
NL1001771C2 (en) * 1995-11-29 1997-05-30 Robert Jurrien Oliemuller Stereo loudspeaker box arrangement.

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL8802488A (en) * 1988-10-11 1990-05-01 Rob Jurrien Oliemuller SPEAKER BOX.

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3590942A (en) * 1969-12-15 1971-07-06 Scott Inc H H Omnidirectional loudspeaker system
GB1253044A (en) * 1967-12-04 1971-11-10
US3933219A (en) * 1974-04-08 1976-01-20 Ambient, Inc. Speaker system
GB2037130A (en) * 1978-12-19 1980-07-02 Griffin P Single source stereo sound
EP0114951A1 (en) * 1982-12-23 1984-08-08 Walter Schupbach Stereophonic loudspeaker box
NL8802488A (en) * 1988-10-11 1990-05-01 Rob Jurrien Oliemuller SPEAKER BOX.

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1253044A (en) * 1967-12-04 1971-11-10
US3590942A (en) * 1969-12-15 1971-07-06 Scott Inc H H Omnidirectional loudspeaker system
US3933219A (en) * 1974-04-08 1976-01-20 Ambient, Inc. Speaker system
GB2037130A (en) * 1978-12-19 1980-07-02 Griffin P Single source stereo sound
EP0114951A1 (en) * 1982-12-23 1984-08-08 Walter Schupbach Stereophonic loudspeaker box
NL8802488A (en) * 1988-10-11 1990-05-01 Rob Jurrien Oliemuller SPEAKER BOX.

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU658020B2 (en) * 1991-11-08 1995-03-30 Colin Arthur Preston Coincident spatial loudspeaker
NL1001771C2 (en) * 1995-11-29 1997-05-30 Robert Jurrien Oliemuller Stereo loudspeaker box arrangement.
WO1997020450A1 (en) * 1995-11-29 1997-06-05 Oliemuller Robert Jurrien Stereo loudspeaker system

Also Published As

Publication number Publication date
EP0498794A1 (en) 1992-08-19
NL8802488A (en) 1990-05-01

Similar Documents

Publication Publication Date Title
US4057689A (en) High fidelity sound reproduction system and modules thereof
CA1079199A (en) Multiple driver loudspeaker system
US4591020A (en) Loudspeaker enclosure with isolation of loudspeaker vibration
FI78806B (en) ANALYZING FOR STEREO PHONICAL LEVELING IN TELEVISIONS.
US5119429A (en) Audio installation, in particular stereophonic, for television sets with a large built-in low-frequency loudspeaker
US4408678A (en) Loudspeaker enclosure
US7298862B2 (en) Asymmetrical loudspeaker enclosures with enhanced low frequency response
EP0659030B1 (en) Speaker system for television sets
CA1083972A (en) Multiple driver loudspeaker system
US4326099A (en) Low frequency cabinet, in particular for a triphonic audio network
EP0390165B1 (en) Speaker system
EP0872156A1 (en) Stereo loudspeaker system
US5278361A (en) Loudspeaker system
US5033577A (en) Room sound reproducing
US4452333A (en) Speaker system
US4509615A (en) Multi-chamber enclosure for loudspeakers
WO1991015934A1 (en) Loudspeaker cabinet
US4119799A (en) Critical alignment loudspeaker system
US3291251A (en) Divided panel board for hi-fi speaker systems
US5659157A (en) 7th order acoustic speaker
US4280586A (en) Speaker enclosure
US20070206828A1 (en) Distributed acoustic cabinet
US4512434A (en) Aerodynamic bass-reflex enclosure
US4280585A (en) Multi-sound speaker system
US4313521A (en) Speaker housing

Legal Events

Date Code Title Description
AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): AT BE CH DE DK ES FR GB IT LU NL SE

WWE Wipo information: entry into national phase

Ref document number: 1990907511

Country of ref document: EP

WWP Wipo information: published in national office

Ref document number: 1990907511

Country of ref document: EP

WWW Wipo information: withdrawn in national office

Ref document number: 1990907511

Country of ref document: EP