GB838021A - Improvements in electrostatic loudspeakers - Google Patents

Improvements in electrostatic loudspeakers

Info

Publication number
GB838021A
GB838021A GB3104856A GB3104856A GB838021A GB 838021 A GB838021 A GB 838021A GB 3104856 A GB3104856 A GB 3104856A GB 3104856 A GB3104856 A GB 3104856A GB 838021 A GB838021 A GB 838021A
Authority
GB
United Kingdom
Prior art keywords
membrane
oct
heating
electrostatic
temperatures
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
GB3104856A
Inventor
George Donald Cutler
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.)
Pye Electronic Products Ltd
Original Assignee
Pye 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 Pye Ltd filed Critical Pye Ltd
Priority to GB3104856A priority Critical patent/GB838021A/en
Publication of GB838021A publication Critical patent/GB838021A/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
    • H04R31/00—Apparatus or processes specially adapted for the manufacture of transducers or diaphragms therefor
    • H04R31/003—Apparatus or processes specially adapted for the manufacture of transducers or diaphragms therefor for diaphragms or their outer suspension
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R7/00—Diaphragms for electromechanical transducers; Cones
    • H04R7/16—Mounting or tensioning of diaphragms or cones
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R19/00—Electrostatic transducers
    • H04R19/02—Loudspeakers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R31/00—Apparatus or processes specially adapted for the manufacture of transducers or diaphragms therefor
    • H04R31/006—Interconnection of transducer parts

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Manufacturing & Machinery (AREA)
  • Multimedia (AREA)
  • Piezo-Electric Transducers For Audible Bands (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)

Abstract

838,021. Electrostatic loud-speakers. PYE Ltd. Oct. 11, 1957 [Oct. 11, 1956], No. 31045/56. Class 40 (4). In an electrostatic loud-speaker a sheet of polyethylene terephthalate is secured in a supporting frame and tensioned by heating the membrane and allowing it to cool to cause it to shrink in the frame. The useful range of temperatures to which the membrane may be heated is said to be from about 70 ‹ to about 80 ‹ C. and heating to the highest temperatures can reduce the membrane by 5%. Further reductions of the membrane can be achieved by successive reheatings and coolings. Specification 838,022 is referred to.
GB3104856A 1956-10-11 1956-10-11 Improvements in electrostatic loudspeakers Expired GB838021A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3104856A GB838021A (en) 1956-10-11 1956-10-11 Improvements in electrostatic loudspeakers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3104856A GB838021A (en) 1956-10-11 1956-10-11 Improvements in electrostatic loudspeakers

Publications (1)

Publication Number Publication Date
GB838021A true GB838021A (en) 1960-06-22

Family

ID=10317179

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3104856A Expired GB838021A (en) 1956-10-11 1956-10-11 Improvements in electrostatic loudspeakers

Country Status (1)

Country Link
GB (1) GB838021A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3118022A (en) * 1961-08-07 1964-01-14 Bell Telephone Labor Inc Electroacoustic transducer
EP0002363A1 (en) * 1977-12-02 1979-06-13 The Post Office Electret transducer and method of making an electret transducer
ITFI20110192A1 (en) * 2011-09-06 2013-03-07 Texe Srl STRUCTURE OF SPEAKER AND SUSPENSION EQUIPMENT. LOUDSPEAKER MEMBRANE METHOD

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3118022A (en) * 1961-08-07 1964-01-14 Bell Telephone Labor Inc Electroacoustic transducer
EP0002363A1 (en) * 1977-12-02 1979-06-13 The Post Office Electret transducer and method of making an electret transducer
ITFI20110192A1 (en) * 2011-09-06 2013-03-07 Texe Srl STRUCTURE OF SPEAKER AND SUSPENSION EQUIPMENT. LOUDSPEAKER MEMBRANE METHOD

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