GB1489283A - Multiple driver dynamic loud speaker - Google Patents

Multiple driver dynamic loud speaker

Info

Publication number
GB1489283A
GB1489283A GB1438775A GB1438775A GB1489283A GB 1489283 A GB1489283 A GB 1489283A GB 1438775 A GB1438775 A GB 1438775A GB 1438775 A GB1438775 A GB 1438775A GB 1489283 A GB1489283 A GB 1489283A
Authority
GB
United Kingdom
Prior art keywords
frequency
loud speaker
multiple driver
loudspeaker
dynamic 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
GB1438775A
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
Priority claimed from US469767A external-priority patent/US3927261A/en
Application filed by Individual filed Critical Individual
Publication of GB1489283A publication Critical patent/GB1489283A/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 
    • H04R1/26—Spatial arrangements of separate transducers responsive to two or more frequency ranges

Landscapes

  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Circuit For Audible Band Transducer (AREA)

Abstract

1489283 Loudspeaker systems; loudspeaker baffles J G DAHLQUIST 8 April 1975 [14 May 1974] 14387/75 Headings H4J and H4X The middle and high frequency transducers 17-19 of the loudspeaker system disclosed in Specification 1,435,623 are provided with annular "baffles" 20-22, the longest dimension D of each baffle being not more than one half the wavelength of a sound wave at the frequency of the lower nominal crossover frequency fed to the respective transducer, i.e. the frequency whereat the audio signals fed to the transducer are attenuated by 3 db. Preferably the "baffle" size should be between “ and ¢ of the wavelength.
GB1438775A 1974-05-14 1975-04-08 Multiple driver dynamic loud speaker Expired GB1489283A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US469767A US3927261A (en) 1972-11-29 1974-05-14 Multiple driver dynamic loud speaker

Publications (1)

Publication Number Publication Date
GB1489283A true GB1489283A (en) 1977-10-19

Family

ID=23864984

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1438775A Expired GB1489283A (en) 1974-05-14 1975-04-08 Multiple driver dynamic loud speaker

Country Status (2)

Country Link
CA (1) CA1024076A (en)
GB (1) GB1489283A (en)

Also Published As

Publication number Publication date
CA1024076A (en) 1978-01-10

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee