GB387673A - Improvements in permanent magnet loud speakers - Google Patents

Improvements in permanent magnet loud speakers

Info

Publication number
GB387673A
GB387673A GB22407/31A GB2240731A GB387673A GB 387673 A GB387673 A GB 387673A GB 22407/31 A GB22407/31 A GB 22407/31A GB 2240731 A GB2240731 A GB 2240731A GB 387673 A GB387673 A GB 387673A
Authority
GB
United Kingdom
Prior art keywords
magnet
diaphragm
annular
magnetic
magnetized
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
GB22407/31A
Other languages
English (en)
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.)
Philips North America LLC
Original Assignee
Magnavox Co
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 Magnavox Co filed Critical Magnavox Co
Publication of GB387673A publication Critical patent/GB387673A/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
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/02—Details
    • H04R9/025—Magnetic circuit

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
GB22407/31A 1931-05-18 1931-08-07 Improvements in permanent magnet loud speakers Expired GB387673A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US387673XA 1931-05-18 1931-05-18
FR719964T 1931-07-10

Publications (1)

Publication Number Publication Date
GB387673A true GB387673A (en) 1933-02-07

Family

ID=21901775

Family Applications (1)

Application Number Title Priority Date Filing Date
GB22407/31A Expired GB387673A (en) 1931-05-18 1931-08-07 Improvements in permanent magnet loud speakers

Country Status (2)

Country Link
FR (1) FR719964A (fr)
GB (1) GB387673A (fr)

Also Published As

Publication number Publication date
FR719964A (fr) 1932-02-18

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