GB830020A - Improvements in or relating to sound reproducing devices - Google Patents

Improvements in or relating to sound reproducing devices

Info

Publication number
GB830020A
GB830020A GB988857A GB988857A GB830020A GB 830020 A GB830020 A GB 830020A GB 988857 A GB988857 A GB 988857A GB 988857 A GB988857 A GB 988857A GB 830020 A GB830020 A GB 830020A
Authority
GB
United Kingdom
Prior art keywords
space
march
relating
design
sound reproducing
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
GB988857A
Inventor
Francis Hugh Brittain
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.)
General Electric Co PLC
Original Assignee
General Electric Co PLC
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 General Electric Co PLC filed Critical General Electric Co PLC
Priority to GB988857A priority Critical patent/GB830020A/en
Publication of GB830020A publication Critical patent/GB830020A/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 
    • H04R1/227—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only  using transducers reproducing the same frequency band

Abstract

830,020. Sound-directive appliances. GENERAL ELECTRIC CO. Ltd. March 26, 1958 [March 26, 1957], No. 9888/57. Class 13. [Also in Group XXXIX] Two loud-speakers 1, 2 of like design are electrically connected so as to operate in opposite phase. They are arranged at an angle as shown so that the front face of 1 and the rear face of 2 radiate directly. The opposite faces communicate with an air space 6 connected to the interior of a bass reflex cabinet of such a design that it reverses the phase of the lowest frequency produced by the loudspeakers whereby the output from the space 6 then reinforces the direct output. The other frequencies from the space 6 are largely dissipated.
GB988857A 1957-03-26 1957-03-26 Improvements in or relating to sound reproducing devices Expired GB830020A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB988857A GB830020A (en) 1957-03-26 1957-03-26 Improvements in or relating to sound reproducing devices

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB988857A GB830020A (en) 1957-03-26 1957-03-26 Improvements in or relating to sound reproducing devices

Publications (1)

Publication Number Publication Date
GB830020A true GB830020A (en) 1960-03-09

Family

ID=9880650

Family Applications (1)

Application Number Title Priority Date Filing Date
GB988857A Expired GB830020A (en) 1957-03-26 1957-03-26 Improvements in or relating to sound reproducing devices

Country Status (1)

Country Link
GB (1) GB830020A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006020429A1 (en) * 2004-08-09 2006-02-23 Graber Curtis E Increased lf spectrum power density loudspeaker system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006020429A1 (en) * 2004-08-09 2006-02-23 Graber Curtis E Increased lf spectrum power density loudspeaker system
US7277552B2 (en) 2004-08-09 2007-10-02 Graber Curtis E Increased LF spectrum power density loudspeaker system

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