CA1029465A - Loudspeaker - Google Patents
LoudspeakerInfo
- Publication number
- CA1029465A CA1029465A CA218,712A CA218712A CA1029465A CA 1029465 A CA1029465 A CA 1029465A CA 218712 A CA218712 A CA 218712A CA 1029465 A CA1029465 A CA 1029465A
- Authority
- CA
- Canada
- Prior art keywords
- loudspeaker
- 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
- H04R11/00—Transducers of moving-armature or moving-core type
- H04R11/02—Loudspeakers
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Diaphragms For Electromechanical Transducers (AREA)
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US451482A US3917914A (en) | 1974-03-15 | 1974-03-15 | Loudspeaker |
Publications (1)
Publication Number | Publication Date |
---|---|
CA1029465A true CA1029465A (en) | 1978-04-11 |
Family
ID=23792395
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA218,712A Expired CA1029465A (en) | 1974-03-15 | 1975-01-27 | Loudspeaker |
Country Status (2)
Country | Link |
---|---|
US (1) | US3917914A (en) |
CA (1) | CA1029465A (en) |
Families Citing this family (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4356882A (en) * | 1981-01-15 | 1982-11-02 | Allen James C | Device for enlarging the effective volume of a loudspeaker enclosure |
JP2701279B2 (en) * | 1987-12-28 | 1998-01-21 | ヤマハ株式会社 | Sound equipment |
JP2605321B2 (en) * | 1987-12-28 | 1997-04-30 | ヤマハ株式会社 | Sound equipment |
US5548657A (en) * | 1988-05-09 | 1996-08-20 | Kef Audio (Uk) Limited | Compound loudspeaker drive unit |
GB2259222A (en) * | 1991-08-30 | 1993-03-03 | Marconi Gec Ltd | Underwater acoustic projector |
US5390257A (en) * | 1992-06-05 | 1995-02-14 | Oslac; Michael J. | Light-weight speaker system |
BE1008080A3 (en) * | 1994-02-22 | 1996-01-09 | Fabrilec Naamloze Vennootschap | Device for the reflection of at least one spoken message |
US6647122B1 (en) | 1998-09-28 | 2003-11-11 | Pioneer Electronics Technology, Inc. | Loudspeaker drive unit |
CN1158896C (en) * | 1999-03-10 | 2004-07-21 | 皇家菲利浦电子有限公司 | Apparatus including an electroacoustic transducer having terminal contacts which extend in the direction of the transducer axis and including a printed circuit board having mating contacts |
CN1225076C (en) * | 1999-04-13 | 2005-10-26 | 松下电器产业株式会社 | Linear motor |
US6738490B2 (en) | 2000-01-11 | 2004-05-18 | Eugene P. Brandt | Loudspeaker with independent magnetic dampening and excursion control |
TW588222B (en) * | 2000-02-10 | 2004-05-21 | Asml Netherlands Bv | Cooling of voice coil motors in lithographic projection apparatus |
WO2005027570A1 (en) * | 2003-09-16 | 2005-03-24 | Koninklijke Philips Electronics N.V. | High efficiency audio transducer |
IT1399082B1 (en) | 2010-03-25 | 2013-04-05 | Claudio Lastrucci | MOBILE MAGNETIC ELECTRO-MECHANICAL CONVERSION SYSTEM; ACOUSTIC DIFFUSER INCLUDING THIS SYSTEM AND A MOBILE ORGAN GENERATING ACOUSTIC WAVES. |
IT201800003406A1 (en) * | 2018-03-09 | 2019-09-09 | Powersoft S P A | Platform vibration control system |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2110153A (en) * | 1934-10-19 | 1938-03-08 | Philips Nv | Magnetic system |
US2537723A (en) * | 1946-11-22 | 1951-01-09 | Truvox Engineering Company Ltd | Electromagnetic transducer |
US2951190A (en) * | 1954-10-28 | 1960-08-30 | Baermann Max | Electro-mechanical transformer |
-
1974
- 1974-03-15 US US451482A patent/US3917914A/en not_active Expired - Lifetime
-
1975
- 1975-01-27 CA CA218,712A patent/CA1029465A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
US3917914A (en) | 1975-11-04 |
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