GB765183A - Improvements in or relating to loudspeakers - Google Patents

Improvements in or relating to loudspeakers

Info

Publication number
GB765183A
GB765183A GB276/54A GB27654A GB765183A GB 765183 A GB765183 A GB 765183A GB 276/54 A GB276/54 A GB 276/54A GB 27654 A GB27654 A GB 27654A GB 765183 A GB765183 A GB 765183A
Authority
GB
United Kingdom
Prior art keywords
horn
partitions
jan
speaker
frequencies
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
GB276/54A
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 GB276/54A priority Critical patent/GB765183A/en
Priority to US479599A priority patent/US2975852A/en
Publication of GB765183A publication Critical patent/GB765183A/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 
    • H04R1/30—Combinations of transducers with horns, e.g. with mechanical matching means, i.e. front-loaded horns
    • 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
    • H04R1/2861—Enclosures comprising vibrating or resonating arrangements using a back-loaded horn
    • H04R1/2865—Enclosures comprising vibrating or resonating arrangements using a back-loaded horn for loudspeaker transducers

Landscapes

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

Abstract

765,183. Sound directing appliances. CHAVE, D. M., [trading as LOWTHER MANUFACTURING CO.]. Jan. 4, 1955 [Jan. 5, 1954], No. 276/54. Class 13. [Also in Group XXXIX] The higher frequencies are radiated predominantly from the front of a loud-speaker 13 through a short horn E and the lower frequencies predominantly from the back of the speaker through an acoustic pressure chamber F coupled to a longer horn G. The highest frequencies are reproduced by an additional cone 10a which may have a higher frequency diffusing device as described in Specification 765,184. Undesirable resonances in the chamber F may be damped by one or more baffles 17, Fig. 3. In a corner cabinet, Fig. 2, the loudspeaker points vertically downwards. The pressure chamber F is a stout metal box opening at 15 into a long folded horn 16 defined by an array of walls and partitions 28. These partitions may be plane since it has been found that strictly exponential expansion over short lengths is not necessary in the long horn 16.
GB276/54A 1954-01-05 1954-01-05 Improvements in or relating to loudspeakers Expired GB765183A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB276/54A GB765183A (en) 1954-01-05 1954-01-05 Improvements in or relating to loudspeakers
US479599A US2975852A (en) 1954-01-05 1955-01-03 Loudspeakers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB276/54A GB765183A (en) 1954-01-05 1954-01-05 Improvements in or relating to loudspeakers

Publications (1)

Publication Number Publication Date
GB765183A true GB765183A (en) 1957-01-02

Family

ID=9701508

Family Applications (1)

Application Number Title Priority Date Filing Date
GB276/54A Expired GB765183A (en) 1954-01-05 1954-01-05 Improvements in or relating to loudspeakers

Country Status (2)

Country Link
US (1) US2975852A (en)
GB (1) GB765183A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3032137A (en) * 1957-09-03 1962-05-01 Carl E Grebe Folded speaker enclosure
US4251687A (en) * 1978-01-12 1981-02-17 Hans Deutsch Stereophonic sound reproducing system
GB2149613A (en) * 1983-09-03 1985-06-12 Torquil Hector Rees Macleod Loudspeaker cabinet
GB2312587A (en) * 1996-04-22 1997-10-29 Samsung Electronics Co Ltd Dual sound magnifying arrangement for television loudspeakers
RU2454026C1 (en) * 2010-12-24 2012-06-20 Юрий Михайлович Деревягин Acoustical system
GB2577569A (en) * 2018-09-29 2020-04-01 Barefaced Ltd Loudspeaker enclosure with slot/horn apparatus for improved polar response and low frequency output

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3131783A (en) * 1960-11-04 1964-05-05 Santos J Mares Loud-speaker enclosure
US3276538A (en) * 1965-01-13 1966-10-04 Gen Motors Corp Combination automobile instrument panel and horn loudspeaker
US3964571A (en) * 1975-04-01 1976-06-22 Peter Garland Snell Acoustic system
US4592444A (en) * 1983-02-28 1986-06-03 Perrigo Stephen M Low frequency speaker enclosure
US4524845A (en) * 1983-02-28 1985-06-25 Perrigo Stephen M Low frequency speaker enclosure
US4524846A (en) * 1983-03-02 1985-06-25 Whitby Ronney J Loudspeaker system
US5710395A (en) * 1995-03-28 1998-01-20 Wilke; Paul Helmholtz resonator loudspeaker
US5815589A (en) * 1997-02-18 1998-09-29 Wainwright; Charles E. Push-pull transmission line loudspeaker
US6349792B1 (en) 2000-04-07 2002-02-26 Harold N. Smith, Jr. Sound enhancing speaking cabinet for a removable speaker assembly
US7556122B2 (en) * 2006-10-27 2009-07-07 Moore Dana A Upward-exhausting corner horn enclosure
DK2040483T3 (en) * 2007-09-21 2013-06-03 Laurence George Dickie Port speaker cabinet with conical waveguide absorber
CA2720185A1 (en) * 2007-10-22 2009-04-30 David Maeshiba Acoustic system
RU2662052C2 (en) * 2016-12-21 2018-07-23 Константин Эдуардович Румянцев Complete acoustic horn and method of its manufacture
EP3525481A1 (en) * 2018-02-07 2019-08-14 Panasonic Intellectual Property Corporation of America Speaker system

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1981347A (en) * 1928-10-25 1934-11-20 Rca Corp Radiocabinet
US1930915A (en) * 1932-07-13 1933-10-17 Bell Telephone Labor Inc Acoustic device
BE400733A (en) * 1933-01-06
NL51541C (en) * 1935-04-04
GB483745A (en) * 1936-10-28 1938-04-26 Murphy Radio Ltd Improvements in cabinets for sound reproducing instruments
US2224919A (en) * 1937-03-31 1940-12-17 Rca Corp Loud-speaker
US2193398A (en) * 1937-12-11 1940-03-12 Allan W Fisher Acoustical apparatus

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3032137A (en) * 1957-09-03 1962-05-01 Carl E Grebe Folded speaker enclosure
US4251687A (en) * 1978-01-12 1981-02-17 Hans Deutsch Stereophonic sound reproducing system
GB2149613A (en) * 1983-09-03 1985-06-12 Torquil Hector Rees Macleod Loudspeaker cabinet
GB2312587A (en) * 1996-04-22 1997-10-29 Samsung Electronics Co Ltd Dual sound magnifying arrangement for television loudspeakers
GB2312587B (en) * 1996-04-22 2000-09-06 Samsung Electronics Co Ltd Television speaker system
RU2454026C1 (en) * 2010-12-24 2012-06-20 Юрий Михайлович Деревягин Acoustical system
GB2577569A (en) * 2018-09-29 2020-04-01 Barefaced Ltd Loudspeaker enclosure with slot/horn apparatus for improved polar response and low frequency output
GB2577569B (en) * 2018-09-29 2022-06-15 Barefaced Ltd Loudspeaker enclosure with slot/horn apparatus for improved polar response and low frequency output

Also Published As

Publication number Publication date
US2975852A (en) 1961-03-21

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