FR2365926A1 - Modification of low frequency response of loudspeaker - uses elastically compressible stopper to selectively block tuned orifice - Google Patents

Modification of low frequency response of loudspeaker - uses elastically compressible stopper to selectively block tuned orifice

Info

Publication number
FR2365926A1
FR2365926A1 FR7705436A FR7705436A FR2365926A1 FR 2365926 A1 FR2365926 A1 FR 2365926A1 FR 7705436 A FR7705436 A FR 7705436A FR 7705436 A FR7705436 A FR 7705436A FR 2365926 A1 FR2365926 A1 FR 2365926A1
Authority
FR
France
Prior art keywords
loudspeaker
frequency response
orifice
low frequency
elastically compressible
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.)
Granted
Application number
FR7705436A
Other languages
French (fr)
Other versions
FR2365926B1 (en
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.)
Marantz Co Inc
Original Assignee
Marantz Co Inc
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 Marantz Co Inc filed Critical Marantz Co Inc
Publication of FR2365926A1 publication Critical patent/FR2365926A1/en
Application granted granted Critical
Publication of FR2365926B1 publication Critical patent/FR2365926B1/fr
Granted 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
    • H04R1/2815—Enclosures comprising vibrating or resonating arrangements of the bass reflex type
    • H04R1/2823—Vents, i.e. ports, e.g. shape thereof or tuning thereof with damping material
    • H04R1/2826—Vents, i.e. ports, e.g. shape thereof or tuning thereof with damping material for loudspeaker transducers

Abstract

A loudspeaker system with an adjustable low frequency response is formed by combining an air suspension system with a tuned orifice system. The frequency response is modified by mechanically selectively blocking the tuned orifice. An enclosure for a loudspeaker unit comprises a number of sealed compartments with openings in the front panel (27) in which loudspeaker are mounted enabling the system to operate as an air suspension system. A tuned orifice (57) enters one loudspeaker compartment providing communication between interior and exterior. An elastically compressible stopper (15) has a support axis (61, 63, 65, 67) to make it rigid for insertion into the orifice.
FR7705436A 1976-09-27 1977-02-24 Modification of low frequency response of loudspeaker - uses elastically compressible stopper to selectively block tuned orifice Granted FR2365926A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US72737076A 1976-09-27 1976-09-27

Publications (2)

Publication Number Publication Date
FR2365926A1 true FR2365926A1 (en) 1978-04-21
FR2365926B1 FR2365926B1 (en) 1980-02-22

Family

ID=24922379

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7705436A Granted FR2365926A1 (en) 1976-09-27 1977-02-24 Modification of low frequency response of loudspeaker - uses elastically compressible stopper to selectively block tuned orifice

Country Status (13)

Country Link
JP (1) JPS5342722A (en)
AR (1) AR211052A1 (en)
AU (1) AU2277577A (en)
BE (1) BE851924A (en)
BR (1) BR7701164A (en)
DE (1) DE2708872A1 (en)
DK (1) DK89577A (en)
ES (1) ES456320A1 (en)
FR (1) FR2365926A1 (en)
NL (1) NL7702202A (en)
NO (1) NO770712L (en)
PT (1) PT66254B (en)
SE (1) SE7701417L (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2429535A3 (en) * 1978-06-23 1980-01-18 Thomson Brandt Bass reflex Helmholtz resonator loudspeaker enclosure - has a low frequency cut=off adjustable by packing the enclosure vent with foam, e.g. polyurethane
FR2598875A1 (en) * 1986-05-14 1987-11-20 Cabasse Georges Acoustic enclosure with variable tuning
EP0403900A2 (en) * 1989-06-20 1990-12-27 Krister Amnéus Electroacoustical loudspeaker device
WO1990016135A1 (en) * 1989-06-20 1990-12-27 Amnéus Engineering Loudspeaker device
ITVI20090277A1 (en) * 2009-11-17 2011-05-18 Sonus Faber S P A PROJECT FINDINGS FOR RESONANCE ROOMS AGREEMENT IN SPEAKER SYSTEMS

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2417909A1 (en) * 1978-02-17 1979-09-14 Thaille Jean Louis ACOUSTIC PRESSURE (OR CHARGE) REGULATOR
US6470088B2 (en) 2000-12-27 2002-10-22 Koninklijke Philips Electronics, N.V. Vented loudspeaker enclosure with limited driver radiation
WO2008025060A1 (en) * 2006-08-29 2008-03-06 Immersion Technology Property Limited Loudspeaker system with adjustable response
JP4875039B2 (en) * 2008-09-24 2012-02-15 ボーズ・コーポレーション Active noise reduction headset
JP5880039B2 (en) * 2011-12-28 2016-03-08 ヤマハ株式会社 Speaker

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1138781A (en) * 1954-09-03 1957-06-19 Goodmans Ind Ltd Loudspeaker cabinet
FR1533829A (en) * 1966-08-08 1968-07-19 Speaker enclosure
US3684051A (en) * 1970-10-08 1972-08-15 Herbert J Hopkins Acoustic duct speaker system
GB1403354A (en) * 1971-05-25 1975-08-28 Gabr S Z M Loudspeaker cabinets

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1138781A (en) * 1954-09-03 1957-06-19 Goodmans Ind Ltd Loudspeaker cabinet
FR1533829A (en) * 1966-08-08 1968-07-19 Speaker enclosure
US3684051A (en) * 1970-10-08 1972-08-15 Herbert J Hopkins Acoustic duct speaker system
GB1403354A (en) * 1971-05-25 1975-08-28 Gabr S Z M Loudspeaker cabinets

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2429535A3 (en) * 1978-06-23 1980-01-18 Thomson Brandt Bass reflex Helmholtz resonator loudspeaker enclosure - has a low frequency cut=off adjustable by packing the enclosure vent with foam, e.g. polyurethane
FR2598875A1 (en) * 1986-05-14 1987-11-20 Cabasse Georges Acoustic enclosure with variable tuning
EP0403900A2 (en) * 1989-06-20 1990-12-27 Krister Amnéus Electroacoustical loudspeaker device
WO1990016135A1 (en) * 1989-06-20 1990-12-27 Amnéus Engineering Loudspeaker device
EP0403900A3 (en) * 1989-06-20 1992-03-25 Krister Amnéus Electroacoustical loudspeaker device
ITVI20090277A1 (en) * 2009-11-17 2011-05-18 Sonus Faber S P A PROJECT FINDINGS FOR RESONANCE ROOMS AGREEMENT IN SPEAKER SYSTEMS

Also Published As

Publication number Publication date
DK89577A (en) 1978-03-28
SE7701417L (en) 1978-03-28
DE2708872A1 (en) 1978-03-30
FR2365926B1 (en) 1980-02-22
NL7702202A (en) 1978-03-29
BE851924A (en) 1977-08-29
PT66254B (en) 1978-08-07
BR7701164A (en) 1978-06-06
NO770712L (en) 1978-03-29
AR211052A1 (en) 1977-10-14
JPS5342722A (en) 1978-04-18
AU2277577A (en) 1978-09-07
ES456320A1 (en) 1978-02-01
PT66254A (en) 1977-04-01

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Legal Events

Date Code Title Description
ST Notification of lapse