[go: up one dir, main page]

GB793193A - An improved acoustic enclosure for loudspeakers - Google Patents

An improved acoustic enclosure for loudspeakers

Info

Publication number
GB793193A
GB793193A GB4786/55A GB478655A GB793193A GB 793193 A GB793193 A GB 793193A GB 4786/55 A GB4786/55 A GB 4786/55A GB 478655 A GB478655 A GB 478655A GB 793193 A GB793193 A GB 793193A
Authority
GB
United Kingdom
Prior art keywords
chambers
chamber
cabinet
speaker unit
loud
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
GB4786/55A
Inventor
Llewellyn John Elliott
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.)
Pye Electronic Products Ltd
Original Assignee
Pye Ltd
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 Pye Ltd filed Critical Pye Ltd
Priority to GB4786/55A priority Critical patent/GB793193A/en
Priority to US564809A priority patent/US2917127A/en
Publication of GB793193A publication Critical patent/GB793193A/en
Expired 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
    • H04R1/2819—Enclosures comprising vibrating or resonating arrangements of the bass reflex type for loudspeaker transducers

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)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
  • Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)

Abstract

793,193. Resonators. PYE, Ltd. Feb. 17, 1956 [Feb. 17, 1955], No. 4786/55. Class 13. [Also in Group XXXIX] A loud-speaker cabinet encloses two or more Helmholtz resonators tuned to the resonant frequency of the loud-speaker unit with the acoustic capacitance of the air inside the cabinet or to a frequency slightly removed from that resonant frequency. The cabinet is divided into chambers A, B, C, D, E, the floor 5 of chamber A sloping as shown in Fig. 1 to avoid the setting up of standing waves. Aperture 6a resonates with chamber A to reduce the amplitude of resonance of the speaker unit with chambers A and B. Apertures 8 in the front panel resonate with chamber C as a subsidiary reflex system to reduce the amplitude of resonance of the speaker unit with main port apertures 7a. An amplifier may be housed in space D and a crossover network in E, or D and E may be omitted. The resonant chambers A, B, C may be lined with sound-absorbent material.
GB4786/55A 1955-02-17 1955-02-17 An improved acoustic enclosure for loudspeakers Expired GB793193A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB4786/55A GB793193A (en) 1955-02-17 1955-02-17 An improved acoustic enclosure for loudspeakers
US564809A US2917127A (en) 1955-02-17 1956-02-10 Acoustic enclosure for loudspeakers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4786/55A GB793193A (en) 1955-02-17 1955-02-17 An improved acoustic enclosure for loudspeakers

Publications (1)

Publication Number Publication Date
GB793193A true GB793193A (en) 1958-04-09

Family

ID=9783784

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4786/55A Expired GB793193A (en) 1955-02-17 1955-02-17 An improved acoustic enclosure for loudspeakers

Country Status (2)

Country Link
US (1) US2917127A (en)
GB (1) GB793193A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4690244A (en) * 1985-02-09 1987-09-01 B & W Loudspeakers Limited Loudspeaker enclosures
GB2206262A (en) * 1987-08-07 1988-12-29 Samsung Electronics Co Ltd Loud speaker
US5868475A (en) * 1993-03-05 1999-02-09 Matsushita Electric Industrial Co., Ltd. Audiovisual equipment and casing thereof and method of producing the same
US11128941B1 (en) 2018-11-20 2021-09-21 Edward G. Blemel Method for passive dissipation of deconstructive harmonics during audio amplification and reproduction

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3047090A (en) * 1958-05-07 1962-07-31 Robert G Pruden Tuned acoustical device
US3938617A (en) * 1974-01-17 1976-02-17 Fort Enterprises, Limited Speaker enclosure
US4029170A (en) * 1974-09-06 1977-06-14 B & P Enterprises, Inc. Radial sound port speaker
US4131179A (en) * 1976-12-17 1978-12-26 Pope Darrel L High fidelity speaker system
AT385384B (en) * 1986-07-28 1988-03-25 Stastny & Schroegendorfer Ges SPEAKER COVER
US5920633A (en) * 1996-02-12 1999-07-06 Yang; Yi-Fu Thin-wall multi-concentric cylinder speaker enclosure with audio amplifier tunable to listening room
GB2365250C (en) * 2000-07-21 2005-04-04 B & W Loudspeakers Acoustic structures
US7207413B2 (en) * 2003-06-02 2007-04-24 Tbi Audio Systems Llc Closed loop embedded audio transmission line technology for loudspeaker enclosures and systems
JP2005039454A (en) * 2003-07-18 2005-02-10 Pioneer Electronic Corp Speaker system for door, and door panel
US8276706B2 (en) * 2008-06-27 2012-10-02 Rgb Systems, Inc. Method and apparatus for a loudspeaker assembly
USD826902S1 (en) * 2016-12-27 2018-08-28 Monolith Cooperation, LLC Component and speaker assembly with integrated dolly

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1804676A (en) * 1925-03-05 1931-05-12 Columbia Phono Graph Company I Radio apparatus
US1837755A (en) * 1929-06-22 1931-12-22 Westinghouse Electric & Mfg Co Translating device
US1869178A (en) * 1930-08-15 1932-07-26 Bell Telephone Labor Inc Sound translating device
US1969704A (en) * 1932-06-03 1934-08-07 D Alton Andre Acoustic device
GB434563A (en) * 1934-08-13 1935-09-04 Philip Keston Turner Improvements in and relating to baffles and containers for loud speakers
BE414489A (en) * 1935-03-23
BE423380A (en) * 1936-09-02
GB496487A (en) * 1937-05-26 1938-11-28 Murphy Radio Ltd Improvements in cabinets for sound reproducing instruments
US2179840A (en) * 1938-05-03 1939-11-14 Frida Bucky Loudspeaker arrangement
GB663734A (en) * 1948-01-13 1951-12-27 Murphy Radio Ltd Improvements in and relating to loud speakers
US2642948A (en) * 1948-05-28 1953-06-23 Rca Corp Portable radio with a bass-reflex cabinet
GB696671A (en) * 1949-09-23 1953-09-09 British Broadcasting Corp Improvements in and relating to loudspeakers
US2694462A (en) * 1951-09-19 1954-11-16 Robbins Frank Acoustic system for loud-speakers
US2766839A (en) * 1953-03-16 1956-10-16 Research Corp Loudspeaker system

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4690244A (en) * 1985-02-09 1987-09-01 B & W Loudspeakers Limited Loudspeaker enclosures
GB2206262A (en) * 1987-08-07 1988-12-29 Samsung Electronics Co Ltd Loud speaker
US5868475A (en) * 1993-03-05 1999-02-09 Matsushita Electric Industrial Co., Ltd. Audiovisual equipment and casing thereof and method of producing the same
US11128941B1 (en) 2018-11-20 2021-09-21 Edward G. Blemel Method for passive dissipation of deconstructive harmonics during audio amplification and reproduction

Also Published As

Publication number Publication date
US2917127A (en) 1959-12-15

Similar Documents

Publication Publication Date Title
GB793193A (en) An improved acoustic enclosure for loudspeakers
US4064966A (en) Loudspeaker apparatus
ES483380A1 (en) Unidirectional acoustical enclosure.
US2880817A (en) Loudspeaker system
US2642948A (en) Portable radio with a bass-reflex cabinet
GB622401A (en) Improvements in or relating to stereophonic reproduction apparatus
US2866514A (en) Corrective loud speaker enclosure
GB822098A (en) Improvements in or relating to acoustic signalling means particularly for telephone sets
GB999378A (en) Improvements in or relating to electro-acoustic transducers
US1901388A (en) Method and apparatus for eliminating the effect of cabinet resonance
US3858679A (en) Loudspeaker system which produces stereo-like sounds
US3412824A (en) Speaker cabinet enclosure
GB1070186A (en) Loudspeaker enclosure
GB851938A (en) Improvements in and relating to electro-acoustical transducers
US2891629A (en) Acoustic tone equalizer
GB1076821A (en) Improvements in acoustic systems
GB489588A (en) Improvements in or relating to sound-translating devices
GB747263A (en) Improvements in or relating to loudspeaker cabinets
GB841440A (en) Improvements in or relating to loudspeakers
US3016430A (en) Loudspeaker
JPH03267899A (en) Phase inversion type speaker
US3009528A (en) Electro-acoustical device for reproducing low pitch notes
GB767550A (en) Cabinet type housing for loudspeakers
US1981347A (en) Radiocabinet
US2190466A (en) Telephone substation apparatus