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GB837381A - Improvements in or relating to loudspeakers - Google Patents

Improvements in or relating to loudspeakers

Info

Publication number
GB837381A
GB837381A GB3221358A GB3221358A GB837381A GB 837381 A GB837381 A GB 837381A GB 3221358 A GB3221358 A GB 3221358A GB 3221358 A GB3221358 A GB 3221358A GB 837381 A GB837381 A GB 837381A
Authority
GB
United Kingdom
Prior art keywords
loud
amplifier
input
cone
condenser
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
GB3221358A
Inventor
Roger Chapman
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.)
Kolster Brandes Ltd
Original Assignee
Kolster Brandes 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 Kolster Brandes Ltd filed Critical Kolster Brandes Ltd
Priority to GB3221358A priority Critical patent/GB837381A/en
Publication of GB837381A publication Critical patent/GB837381A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
    • H03F1/34—Negative-feedback-circuit arrangements with or without positive feedback
    • H03F1/36—Negative-feedback-circuit arrangements with or without positive feedback in discharge-tube amplifiers
    • 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
    • H04R3/002—Damping circuit arrangements for transducers, e.g. motional feedback circuits

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Circuit For Audible Band Transducer (AREA)

Abstract

837,381. Loud-speakers. KOLSTERBRANDES Ltd. Oct. 9, 1958, No. 32213/58. Class 40 (4). A moving coil loud-speaker includes a condenser whose capacity varies with movement of the loud-speaker cone so as to generate a negative feed-back which is applied to the input of the amplifier. The condenser is formed, Fig. 1, by metallized portions on the cone 3 and a stationary member 4. The moving electrode 3<1> may be an extension of the coil former, Fig. 2, and co-operate with a fixed cylinder 4<1>. The low-frequency response may be improved by an equalizing network, Fig. 6. An attenuator may be incorporated in the input to the amplifier to reduce the H.P. response.
GB3221358A 1958-10-09 1958-10-09 Improvements in or relating to loudspeakers Expired GB837381A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3221358A GB837381A (en) 1958-10-09 1958-10-09 Improvements in or relating to loudspeakers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3221358A GB837381A (en) 1958-10-09 1958-10-09 Improvements in or relating to loudspeakers

Publications (1)

Publication Number Publication Date
GB837381A true GB837381A (en) 1960-06-15

Family

ID=10335065

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3221358A Expired GB837381A (en) 1958-10-09 1958-10-09 Improvements in or relating to loudspeakers

Country Status (1)

Country Link
GB (1) GB837381A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2260875A (en) * 1991-10-23 1993-04-28 Anthony Best Dynamics Ltd Feedback controlled noise source for acoustic testing

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2260875A (en) * 1991-10-23 1993-04-28 Anthony Best Dynamics Ltd Feedback controlled noise source for acoustic testing
GB2260875B (en) * 1991-10-23 1995-06-28 Anthony Best Dynamics Ltd Noise source

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