GB337853A - Improvements in and relating to loud speakers - Google Patents

Improvements in and relating to loud speakers

Info

Publication number
GB337853A
GB337853A GB2502829A GB2502829A GB337853A GB 337853 A GB337853 A GB 337853A GB 2502829 A GB2502829 A GB 2502829A GB 2502829 A GB2502829 A GB 2502829A GB 337853 A GB337853 A GB 337853A
Authority
GB
United Kingdom
Prior art keywords
coil
moving
secondary winding
loud
turns
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
GB2502829A
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.)
AUSTIN STORRY Ltd H
ERNEST ARNOLD BITTON
HUBERT GARTH BAWTREE WILLIAMS
HUGH BRANTOM
Original Assignee
AUSTIN STORRY Ltd H
ERNEST ARNOLD BITTON
HUBERT GARTH BAWTREE WILLIAMS
HUGH BRANTOM
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 AUSTIN STORRY Ltd H, ERNEST ARNOLD BITTON, HUBERT GARTH BAWTREE WILLIAMS, HUGH BRANTOM filed Critical AUSTIN STORRY Ltd H
Priority to GB2502829A priority Critical patent/GB337853A/en
Publication of GB337853A publication Critical patent/GB337853A/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
    • H04R3/00—Circuits for transducers, loudspeakers or microphones
    • H04R3/04—Circuits for transducers, loudspeakers or microphones for correcting frequency response
    • H04R3/08—Circuits for transducers, loudspeakers or microphones for correcting frequency response of electromagnetic transducers

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)

Abstract

337,853. Brantom, H., Williams, H. G. Bawtree-, Bitten, E. A.., and Storry Ltd., H. A. Aug. 16, 1929. Magnetic instruments.- A moving-coil loud-speaker in which the diaphragm is large compared with the cross-sectional area of the moving coil, has a secondary winding c coupled inductively to the moving coil b and shunted by a variable resistance d, the number of turns of the secondary winding c being such that by adjusting the variable resistance d a control of the volume of sound produced by the loud speaker is obtained without distortion. The coils c, b, may be wound on the same former e and the constant magnetic field is supplied by the field coil a. The coil c may have ten to thirty turns of wire and the resistance d may be variable up to 1000 ohms. Specification 263,172 is referred to.
GB2502829A 1929-08-16 1929-08-16 Improvements in and relating to loud speakers Expired GB337853A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2502829A GB337853A (en) 1929-08-16 1929-08-16 Improvements in and relating to loud speakers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2502829A GB337853A (en) 1929-08-16 1929-08-16 Improvements in and relating to loud speakers

Publications (1)

Publication Number Publication Date
GB337853A true GB337853A (en) 1930-11-13

Family

ID=10221043

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2502829A Expired GB337853A (en) 1929-08-16 1929-08-16 Improvements in and relating to loud speakers

Country Status (1)

Country Link
GB (1) GB337853A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0137550A1 (en) * 1983-09-15 1985-04-17 Koninklijke Philips Electronics N.V. Loudspeaker system and loudspeaker for converting an n-bit digitized electric signal into an acoustic signal

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0137550A1 (en) * 1983-09-15 1985-04-17 Koninklijke Philips Electronics N.V. Loudspeaker system and loudspeaker for converting an n-bit digitized electric signal into an acoustic signal

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