GB496504A - Improvements in loud speakers - Google Patents

Improvements in loud speakers

Info

Publication number
GB496504A
GB496504A GB1775137A GB1775137A GB496504A GB 496504 A GB496504 A GB 496504A GB 1775137 A GB1775137 A GB 1775137A GB 1775137 A GB1775137 A GB 1775137A GB 496504 A GB496504 A GB 496504A
Authority
GB
United Kingdom
Prior art keywords
diaphragm
sound
front wall
loud
baffle
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
GB1775137A
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.)
GEORGE STANLEY BRAYSHAW
Murphy Radio Ltd
Original Assignee
GEORGE STANLEY BRAYSHAW
Murphy Radio 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 GEORGE STANLEY BRAYSHAW, Murphy Radio Ltd filed Critical GEORGE STANLEY BRAYSHAW
Priority to GB1775137A priority Critical patent/GB496504A/en
Publication of GB496504A publication Critical patent/GB496504A/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
    • H04R1/2838—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
    • 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
    • H04R1/283—Enclosures comprising vibrating or resonating arrangements using a passive diaphragm
    • H04R1/2834—Enclosures comprising vibrating or resonating arrangements using a passive diaphragm 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)

Abstract

496,504. Loud-speakers. MURPHY RADIO, Ltd., and BRAYSHAW, G. S. June 25,1937, No. 17751. [Class 40 (iv)] A loud-speaker 1 is mounted in a cabinet so that its diaphragm 2 is set back at a slant from the front wall 3 through which sound issues and the peripheral surface of the chamber formed between the diaphragm and the plane of the cabinet wall is lined with sound-absorbent material 5. The gap between the baffle-board 4, on which the diaphragm is mounted and the front wall 3 is closed by an upper wall 6 and side walls. The sound-absorbent material, which is preferably hair-felt, is of a thickness from ¢ to 1" and may be formed with an outwardly inclined surface. According to the Provisional Specification, the baffle-board 4 may be parallel to the front wall 3.
GB1775137A 1937-06-25 1937-06-25 Improvements in loud speakers Expired GB496504A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1775137A GB496504A (en) 1937-06-25 1937-06-25 Improvements in loud speakers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1775137A GB496504A (en) 1937-06-25 1937-06-25 Improvements in loud speakers

Publications (1)

Publication Number Publication Date
GB496504A true GB496504A (en) 1938-12-01

Family

ID=10100573

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1775137A Expired GB496504A (en) 1937-06-25 1937-06-25 Improvements in loud speakers

Country Status (1)

Country Link
GB (1) GB496504A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1000449B (en) * 1954-09-08 1957-01-10 Opta Spezial G M B H Loudspeaker arrangement for high-frequency receivers, especially for radio and television devices
DE1018467B (en) * 1955-12-20 1957-10-31 Rundfunk Betr Stechnik G M B H Loudspeakers with small fluctuations in the transmission rate
US3089562A (en) * 1959-10-01 1963-05-14 Lafayette Radio Electronics Co Loudspeaker baffle assembly
EP0295644A2 (en) * 1987-06-16 1988-12-21 Matsushita Electric Industrial Co., Ltd. Speaker system
EP0339425A2 (en) * 1988-04-28 1989-11-02 Matsushita Electric Industrial Co., Ltd. Speaker system
EP2670167A1 (en) * 2012-05-31 2013-12-04 Funai Electric Co., Ltd. Speaker device

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1000449B (en) * 1954-09-08 1957-01-10 Opta Spezial G M B H Loudspeaker arrangement for high-frequency receivers, especially for radio and television devices
DE1018467B (en) * 1955-12-20 1957-10-31 Rundfunk Betr Stechnik G M B H Loudspeakers with small fluctuations in the transmission rate
US3089562A (en) * 1959-10-01 1963-05-14 Lafayette Radio Electronics Co Loudspeaker baffle assembly
EP0295644A2 (en) * 1987-06-16 1988-12-21 Matsushita Electric Industrial Co., Ltd. Speaker system
EP0295644A3 (en) * 1987-06-16 1990-01-10 Matsushita Electric Industrial Co., Ltd. Speaker system
EP0339425A2 (en) * 1988-04-28 1989-11-02 Matsushita Electric Industrial Co., Ltd. Speaker system
EP0339425A3 (en) * 1988-04-28 1990-01-24 Matsushita Electric Industrial Co., Ltd. Speaker system
EP2670167A1 (en) * 2012-05-31 2013-12-04 Funai Electric Co., Ltd. Speaker device
US8879772B2 (en) 2012-05-31 2014-11-04 Funai Electric Co., Ltd. Speaker device

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