EP0947120A1 - Systeme de haut-parleur - Google Patents

Systeme de haut-parleur

Info

Publication number
EP0947120A1
EP0947120A1 EP97914020A EP97914020A EP0947120A1 EP 0947120 A1 EP0947120 A1 EP 0947120A1 EP 97914020 A EP97914020 A EP 97914020A EP 97914020 A EP97914020 A EP 97914020A EP 0947120 A1 EP0947120 A1 EP 0947120A1
Authority
EP
European Patent Office
Prior art keywords
speaker
outlet
sound
chamber
partition
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
EP97914020A
Other languages
German (de)
English (en)
Inventor
Patrice Ledoux
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.)
Excel Sound and Art
Original Assignee
Excel Sound and Art
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 Excel Sound and Art filed Critical Excel Sound and Art
Publication of EP0947120A1 publication Critical patent/EP0947120A1/fr
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
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only 
    • H04R1/28—Transducer mountings or enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means
    • H04R1/2807—Enclosures comprising vibrating or resonating arrangements
    • H04R1/2838—Enclosures comprising vibrating or resonating arrangements of the bandpass type
    • H04R1/2842—Enclosures comprising vibrating or resonating arrangements of the bandpass type for loudspeaker transducers

Definitions

  • This invention relates to a spaker assembly, and specifically to a speaker assembly for reproducing sound, particularly in the lower acoustic frequencies.
  • Such assemblies include one or more speakers mounting in a single or a plurality of cabinets or housings.
  • a sound system includes two speaker assemblies for achieving stereophonic sound or simply "stereo". For the true aficionado, two speaker assemblies are not enough. In order to achieve good stereophonic sound, three and often more speakers are employed. In fact, it is not uncommon to use a plurality of speaker apparatuses which occupy a large portion of a sound or music room.
  • the object of the present invention is to meet the above defined need by providing a relatively simple speaker assembly, which is easy to build, and which is capable of faithfully reproducing sound in the lower acoustic frequencies.
  • the present invention relates to a speaker assembly comprising housing means; first partition means dividing the interior of said housing means into a speaker chamber for receiving a speaker, and a sound outlet chamber; sound outlet box means in said outlet chamber; sound outlet tube means in said outlet chamber; and solid material in said outlet box means surrounding said outlet tube means for preventing vibration of said tube means during the passage of sound therethrough.
  • Figure 1 is a perspective view of a speaker assembly in accordance with the present invention.
  • Figure 2 is a partly sectioned, top view of the speaker assembly of Fig. 1 with the covers removed;
  • Figure 3 is a partly sectioned, exploded, perspective view of the speaker assembly of Figs. 1 and 2 as seen from above and one side;
  • Figure 4 is a cross-sectional view of an outlet box used in the speaker assembly of Figs. 1 to 3;
  • Figure 5 is a partly sectioned, perspective view of one end of the housing of the speaker assembly of Figs. 1 to 3;
  • Figure 6 is a partly sectioned, perspective view of the other end of the housing of Fig. 5, and
  • FIGs 7 and 8 are longitudinal sectional views of a second embodiment of the speaker assembly, the two view being perpendicular to each other.
  • a speaker assembly in accordance with the invention includes a housing generally indicated at 1.
  • the housing is defined by a bottom wall 2, side walls 3, end walls 4 and 5, and a frusto- pyramidal cover 6.
  • the cover 6 includes inclined side and end walls 8 and 9, respectively, and a rectangular top wall 10.
  • a vertical partition 11 extends across the housing 1 between the side walls 3.
  • a second, horizontal partition 12 extends between the side walls 3 and between the vertical partition 11 and one end wall 4.
  • the partitions 11 and 12 divide one end of the housing 1 into an upper, speaker chamber 13 and a lower, intermediate chamber 14.
  • a speaker 16 is mounted on the partition 12 over a circular opening 17 in the partition 12 for admitting sound into the intermediate chamber 14. Power is fed to the speaker 16 via jacks 18 mounted in the end wall 4.
  • a polyester fiber batt 20 (Fig. 2) covers the input or top end of the speaker 16 to prevent or at least to reduce echo.
  • Sound from the speaker 16 travels through a gap in the form of an arch-shaped opening 21 in the bottom of the partition 11 into a sound outlet chamber 22.
  • the outlet chamber 22 is defined by the partition 11 , the side walls 3, the end wall 5 and a top plate or cover 25. As best shown in Figs. 3 and 6, the top 25 extends between the side walls 3, and between the vertical partition 11 and the end wall 5.
  • An outlet box 27 is mounted in the center of one end of the outlet chamber 22 abutting the end wall 5.
  • Spacers or vertical partitions 28 extend between the inner end 29 (Fig. 2) of the outlet box 27 and the side walls 3, and from the bottom wall 2 of the housing 1 to the top plate 25.
  • the areas on each side of the outlet box 27 are filled with sand 30 or another solid material, which, along with the partitions 28, firmly locates the outlet box 27 in the outlet chamber 22 and prevents any vibration of the box.
  • the rectangular outlet box 27 is defined by a bottom wall 31 , a top wall 32, side walls 33, and end walls 34 and 35.
  • a sound outlet tube 36 extends through the end wall 34, the center of the box 27, the end wall 35 and the end wall 5 of the housing 1.
  • the outlet tube 36 is formed of a hard plastic - in this case ABS plastic.
  • the entire interior of the box 27 surrounding the tube 36 is filled with sand 38 (Fig. 4) and/or epoxy resin to prevent vibration of the tube 36.
  • a suitable epoxy resin is sold by Sika Canada Ltd, Pointe Claire, Quebec under the trade mark Sikadur 32 Hi-Mod.
  • the bottom of outlet box 27, and the outlet tube 36 are assembled.
  • the bottom of the housing 1 and the cover 6 are assembled separately, and the speaker 16, the jacks 18 and the batt 20 are placed in the chamber 13.
  • the box is filled with sand and/or epoxy resin, or another solid material.
  • the box 27 is then sealed and mounted in the bottom of the housing 1 with the outlet end of the tube 36 extending through an opening 39 (Figs. 1 and 3) in the end wall 5 of the housing 1.
  • the spacers 28 are mounted in the housing 1 on each side of the inner end of the box 27, the area on each side of the box 27 is filled with sand, and the cover 25 is mounted on the partition 11 , the box 27 and the spacers 28. Finally, the preassembled cover 6 is mounted on the bottom of the housing 1 to complete the speaker assembly.
  • the preferred material used in the construction of the housing 1 is a medium to high density particle board of the type composed of compressed sawdust and resin. While particle board is heavy, the material is inexpensive and relatively easy to assemble. While sand is the preferred filler for the outlet box 27 and the area on each side thereof, any other easily compacted dense, preferably granular material can be used.
  • the exterior of the housing 1 is spray painted or otherwise sealed to resemble wood or to achieve other effects. The coating of the exterior of the housing further prevents the escape of sound from the housing except via the outlet tube.
  • a second embodiment of the invention includes a housing generally indicated at 40 defined by a bottom wall 41 , side walls 42, front and rear end walls 43 and 44, and a top wall or cover 45.
  • a horizontal partition 47 extends across the housing 40 between the side walls 42 and between the end walls 43 and 44, dividing the interior of the casing into an upper speaker chamber 48 and a lower sound outlet chamber 49.
  • a speaker 50 is mounted on the partition 47 over a circular opening 52 in the partition for admitting sound into the outlet chamber 49. Power is fed to the speaker 50 via jacks 53 (one shown) mounted in the rear wall 44 of the housing 40.
  • a polyester batt 54 covers the top end of the speaker 50 to prevent echo.
  • a second partition 56 which is spaced apart from the partition 47, extends between the side walls 42 and from the front wall 43 towards the rear wall 44.
  • the partition 56 stops short of the rear wall 44, leaving a gap 57 through which sound can travel to a sound outlet box 58.
  • the box 58 which is similar to the box 27, is mounted in the bottom center of the housing 40 abutting the front wall 43.
  • the box 58 contains a sound outlet tube 60, which extends through the box and through the front wall 43 of the housing 40.
  • Sand and/or epoxy (not shown) fills the remainder of the interior of the box 58.
  • Vertical partitions or spacers 61 (Fig. 8) are provided on each side of the inner end of the box 58, and the area between the sides of the box 58 and the side walls 42 are filled with sand 63 or another solid material.
  • the spacers 61 can be mounted either at the inner end of the box 58 remote from the front wall 43 of the housing 40 or located between the ends of the box 58, i.e. closer to the front wall 43. In other words, it is not essential that the sand or other solid material fill the entire area on each side of the box 58. However, it is preferable that the sand borders most or all of the area beside each side of the box 58.
  • the speaker assembly includes a housing containing a partition dividing the interior thereof into a speaker chamber for receiving a speaker, and a sound outlet chamber containing an outlet box of the type described hereinbefore, the box being firmly anchored in the outlet chamber.

Landscapes

  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Details Of Audible-Bandwidth Transducers (AREA)
  • Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)

Abstract

Des tentatives visant à la reproduction d'un son fidèle par des systèmes de haut-parleurs ont conduit à l'élaboration d'enceintes souvent grandes, relativement compliquées et chères, notamment pour la reproduction du son dans les basses fréquences acoustiques. Une solution simple à ce problème réside dans un ensemble haut-parleur comprenant un boîtier divisé par une cloison, afin de former une chambre contenant un haut-parleur et une chambre de sortie du son. Cette dernière contient une boîte de sortie du son, située à distance d'une ouverture ménagée dans la cloison et reliant la chambre du haut-parleur à la chambre de sortie du son. Un conduit de sortie du son s'étend à travers la boîte et une paroi du boîtier. L'intérieur de la boîte et au moins une portion de la zone entourant celle-ci sont remplis de sable ou d'un autre matériau solide, afin d'éliminer les vibrations ou d'au moins réduire celles-ci à un minimum.
EP97914020A 1996-11-25 1997-04-02 Systeme de haut-parleur Ceased EP0947120A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CA2191147 1996-11-25
CA 2191147 CA2191147A1 (fr) 1996-11-25 1996-11-25 Enceinte acoustique
PCT/CA1997/000215 WO1998024268A1 (fr) 1996-11-25 1997-04-02 Systeme de haut-parleur

Publications (1)

Publication Number Publication Date
EP0947120A1 true EP0947120A1 (fr) 1999-10-06

Family

ID=4159309

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97914020A Ceased EP0947120A1 (fr) 1996-11-25 1997-04-02 Systeme de haut-parleur

Country Status (4)

Country Link
EP (1) EP0947120A1 (fr)
AU (1) AU2147297A (fr)
CA (1) CA2191147A1 (fr)
WO (1) WO1998024268A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202011001713U1 (de) 2011-01-19 2012-04-20 Byteworker Ltd. Lautsprechergehäuse mit einem Mitschwingungen verhindernden Aufbau

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2645386B1 (fr) * 1989-03-28 1991-06-21 Morel Jacques Ensemble perfectionne de reproduction de sons
FR2670863A3 (fr) * 1990-04-09 1992-06-26 Binh Paul Socles anti-resonants pour enceintes acoustiques.
US5475764A (en) * 1992-09-30 1995-12-12 Polk Investment Corporation Bandpass woofer and method
FR2714788A1 (fr) * 1993-12-31 1995-07-07 Sono Light Diffusion Dispositif émetteur de bruits blancs.
US5517573A (en) * 1994-01-04 1996-05-14 Polk Investment Corporation Ported loudspeaker system and method with reduced air turbulence
GB9412427D0 (en) * 1994-06-21 1994-08-10 White Jonathan G M Loudspeakers
US5471019A (en) * 1994-12-29 1995-11-28 Sounds Resources, Inc. Multiple chamber loudspeaker system

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9824268A1 *

Also Published As

Publication number Publication date
CA2191147A1 (fr) 1998-05-25
AU2147297A (en) 1998-06-22
WO1998024268A1 (fr) 1998-06-04

Similar Documents

Publication Publication Date Title
US5731553A (en) Speaker system
US3952159A (en) Ducted port reflex enclosure
CA1249971A (fr) Haut-parleur pour installation dans un coin
US3356179A (en) High fidelity speaker enclosure
US4284844A (en) Loudspeaker system
US4591020A (en) Loudspeaker enclosure with isolation of loudspeaker vibration
US4869340A (en) Very high performance loudspeaker enclosures
US3160225A (en) Sound reproduction system
US3982607A (en) Loudspeaker cabinet having an integrally constructed horn
CA1253440A (fr) Enceintes pour haut-parleurs
US4199657A (en) Planar sound reproducing speaker system
US5119429A (en) Audio installation, in particular stereophonic, for television sets with a large built-in low-frequency loudspeaker
US6430297B1 (en) Speaker and speaker device
US3473625A (en) Sound reproduction system and loudspeaker assembly
US5710821A (en) Audio communications system with built in expansion capability for a desktop computer
US4408678A (en) Loudspeaker enclosure
JPS6035898A (ja) 一体化された音響帯域通過フイルタを有するラウドスピーカーボツクス
CA2013333C (fr) Haut-parleur
US2852087A (en) Sound reproducing devices
US4201274A (en) Symmetrical speaker having structural reinforcing ports
CN110022509B (zh) 扬声器构造
US3131783A (en) Loud-speaker enclosure
US4509615A (en) Multi-chamber enclosure for loudspeakers
EP0947120A1 (fr) Systeme de haut-parleur
EP1615462A2 (fr) Dispositif à haut-parleur

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 19990525

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

17Q First examination report despatched

Effective date: 20010222

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN REFUSED

18R Application refused

Effective date: 20010817