CA982687A - Electro-acoustic transducer - Google Patents
Electro-acoustic transducerInfo
- Publication number
- CA982687A CA982687A CA136,421A CA136421A CA982687A CA 982687 A CA982687 A CA 982687A CA 136421 A CA136421 A CA 136421A CA 982687 A CA982687 A CA 982687A
- Authority
- CA
- Canada
- Prior art keywords
- electro
- acoustic transducer
- acoustic
- transducer
- 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
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)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1971015019U JPS542647Y2 (en) | 1971-03-10 | 1971-03-10 |
Publications (1)
Publication Number | Publication Date |
---|---|
CA982687A true CA982687A (en) | 1976-01-27 |
Family
ID=27863963
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA136,421A Expired CA982687A (en) | 1971-03-10 | 1972-03-07 | Electro-acoustic transducer |
Country Status (3)
Country | Link |
---|---|
US (1) | US3881074A (en) |
JP (1) | JPS542647Y2 (en) |
CA (1) | CA982687A (en) |
Families Citing this family (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4295011A (en) * | 1979-09-11 | 1981-10-13 | Epicure Products Inc. | Linear excursion-constant inductance loudspeaker |
US4421956A (en) * | 1981-09-29 | 1983-12-20 | Peavey Electronics Corp. | Loud speaker with minimized magnetic leakage |
DE3267630D1 (en) * | 1981-12-24 | 1986-01-02 | Eckehard Kort | Magnetic system with annular air-gap, in particular for woofers |
ATE51994T1 (en) * | 1985-07-17 | 1990-04-15 | Studer Willi Ag | MAGNETIC SYSTEM FOR A DYNAMIC LOUDSPEAKER. |
DE69329918T2 (en) * | 1992-11-18 | 2001-05-31 | Matsushita Electric Industrial Co., Ltd. | Television receiver |
US5381483A (en) * | 1993-04-05 | 1995-01-10 | Commonwealth Of Puerto Rico | Minimal inductance electrodynamic transducer |
WO1996033592A1 (en) * | 1995-04-18 | 1996-10-24 | Harman International Industries, Inc. | Dual coil drive with multipurpose housing |
ATE414395T1 (en) * | 1998-03-19 | 2008-11-15 | Jbl Inc | SHORT CIRCUIT RINGS FOR SPEAKER DRIVE WITH DOUBLE COILS AND DOUBLE COLUMNS |
US6768806B1 (en) | 1998-03-19 | 2004-07-27 | Harman International Industries, Incorporated | Shorting rings in dual-coil dual-gap loudspeaker drivers |
FR2799919B1 (en) * | 1999-10-19 | 2002-10-11 | Sagem | PERMANENT MAGNET ACTUATOR AND DRIVE ELECTRICAL COIL, ESPECIALLY MOBILE PHONE SPEAKER |
US6774510B1 (en) * | 2000-10-25 | 2004-08-10 | Harman International Industries, Inc. | Electromagnetic motor with flux stabilization ring, saturation tips, and radiator |
JP3752674B2 (en) * | 2002-08-28 | 2006-03-08 | ミネベア株式会社 | Magnetic circuit for speakers |
US10280348B2 (en) | 2017-01-31 | 2019-05-07 | Prc-Desoto International, Inc. | Low density aerospace compositions and sealants |
CN208821073U (en) * | 2018-10-15 | 2019-05-03 | 苏州上声电子股份有限公司 | A kind of magnetic circuit of loudspeaker and loudspeaker |
CN113557752B (en) * | 2019-02-28 | 2023-06-23 | 普立菲有限公司 | Speaker motor with improved linearity |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1953542A (en) * | 1929-08-06 | 1934-04-03 | Magnavox Co | Sound reproducing device |
US3079472A (en) * | 1960-10-06 | 1963-02-26 | Rca Corp | Magnetic field structure for transducers and method of constructing same |
US3413579A (en) * | 1966-03-14 | 1968-11-26 | Westinghouse Electric Corp | Magnetic field assembly for electro-mechanical transducers |
-
1971
- 1971-03-10 JP JP1971015019U patent/JPS542647Y2/ja not_active Expired
-
1972
- 1972-03-06 US US232142A patent/US3881074A/en not_active Expired - Lifetime
- 1972-03-07 CA CA136,421A patent/CA982687A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
US3881074A (en) | 1975-04-29 |
JPS4712923U (en) | 1972-10-16 |
JPS542647Y2 (en) | 1979-02-05 |
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