AU3558189A - Loudspeaker - Google Patents
LoudspeakerInfo
- Publication number
- AU3558189A AU3558189A AU35581/89A AU3558189A AU3558189A AU 3558189 A AU3558189 A AU 3558189A AU 35581/89 A AU35581/89 A AU 35581/89A AU 3558189 A AU3558189 A AU 3558189A AU 3558189 A AU3558189 A AU 3558189A
- Authority
- AU
- Australia
- Prior art keywords
- low frequency
- unit
- high frequency
- frequency unit
- drive
- 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.)
- Abandoned
Links
- QJVKUMXDEUEQLH-UHFFFAOYSA-N [B].[Fe].[Nd] Chemical compound [B].[Fe].[Nd] QJVKUMXDEUEQLH-UHFFFAOYSA-N 0.000 abstract 1
- 150000001875 compounds Chemical class 0.000 abstract 1
- 230000004907 flux Effects 0.000 abstract 1
- 229910001172 neodymium magnet Inorganic materials 0.000 abstract 1
- 230000005855 radiation Effects 0.000 abstract 1
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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
- H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only
- H04R1/24—Structural combinations of separate transducers or of two parts of the same transducer and responsive respectively to two or more frequency ranges
-
- 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)
- Health & Medical Sciences (AREA)
- Otolaryngology (AREA)
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
- Piezo-Electric Transducers For Audible Bands (AREA)
- Diaphragms For Electromechanical Transducers (AREA)
- Liquid Crystal (AREA)
- Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)
Abstract
A compound loudspeaker drive unit is disclosed comprising a low frequency unit having an outwardly and forwardly flaring conical diaphragm (21) and a high frequency drive unit (27) located in or adjacent to the neck of the low frequency conical diaphragm such that the acoustic centres of the two units are substantially coincident and, for a cross-over frequency range in which both drive units contribute significant sound output, the directivity of sound radiation from the high frequency unit (27) as acoustically loaded by the low frequency conical diaphragm (21) is substantially the same as that of the low frequency unit. A magnet structure (28,29,30) for the high frequency unit utilises a magnet (29) formed of neodymium iron boron which enables the high frequency unit (27) to be positioned within a drive coil (23,24) for the low frequency diaphragm while providing a required high value of magnetic flux.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB8810943 | 1988-05-09 | ||
GB888810943A GB8810943D0 (en) | 1988-05-09 | 1988-05-09 | Loudspeaker |
Publications (1)
Publication Number | Publication Date |
---|---|
AU3558189A true AU3558189A (en) | 1989-11-29 |
Family
ID=10636585
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AU35581/89A Abandoned AU3558189A (en) | 1988-05-09 | 1989-05-05 | Loudspeaker |
Country Status (12)
Country | Link |
---|---|
EP (1) | EP0341926B2 (en) |
JP (1) | JP2766862B2 (en) |
KR (1) | KR0171567B1 (en) |
AT (1) | ATE115352T1 (en) |
AU (1) | AU3558189A (en) |
CA (1) | CA1339519C (en) |
DE (1) | DE68919746T3 (en) |
ES (1) | ES2065988T3 (en) |
GB (2) | GB8810943D0 (en) |
HK (1) | HK71893A (en) |
NZ (1) | NZ229054A (en) |
WO (1) | WO1989011201A1 (en) |
Families Citing this family (22)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0574387A1 (en) * | 1990-10-09 | 1993-12-22 | Stage Ac-Company B.V. | Electrodynamic loudspeaker with cooling arrangement |
US5418336A (en) * | 1990-10-17 | 1995-05-23 | Canon Research Centre Europe Ltd. | Sound output device |
IT1258008B (en) * | 1992-01-14 | 1996-02-20 | COMPOUND ELECTROACOUSTIC TRANSDUCER FOR THE REPRODUCTION OF MEDIUM-HIGH FREQUENCIES | |
DE4225156A1 (en) * | 1992-07-30 | 1994-02-03 | Nokia Deutschland Gmbh | Magnet system for electro-acoustic transducers |
DE4234069A1 (en) * | 1992-10-09 | 1994-04-14 | Nokia Deutschland Gmbh | Cone speaker in lightweight design |
DE29512102U1 (en) * | 1995-07-27 | 1995-10-05 | Nokia (Deutschland) Gmbh, 75175 Pforzheim | Magnet system |
GB2359213B (en) | 1999-10-29 | 2004-05-19 | Kef Audio | High frequency transducer |
CA2352732A1 (en) * | 2000-07-11 | 2002-01-11 | Philip Jeffrey Anthony | Compound loudspeaker drive unit having a magnet system |
GB2364847B (en) * | 2000-07-11 | 2004-10-13 | Kef Audio | Compound loudspeaker having a magnet system |
GB2368484B (en) * | 2000-10-25 | 2004-06-16 | B & W Loudspeakers | Distributed mode panel type loudspeakers |
KR100896738B1 (en) * | 2000-12-26 | 2009-05-11 | 안데르스 사그렌 | Concentric co-planar multiband electro-acoustic converter |
ITVI20030041A1 (en) * | 2003-03-03 | 2004-09-04 | Alessandro Riccobono | COLUMN SOUND DIFFUSER. |
AU2008352372B2 (en) * | 2008-03-05 | 2013-12-19 | Genelec Oy | Nested compound loudspeaker drive unit |
DE102008049560B3 (en) * | 2008-09-30 | 2010-07-01 | Kuhnke Automotive Gmbh & Co. Kg | Electrical oscillating exciter has circular coil arrangement which is engaged into circular gap of magnet arrangement such that coil arrangement and magnet arrangement are movable relative to each other in axial direction |
GB2471884A (en) | 2009-07-17 | 2011-01-19 | Gp Acoustics | Loudspeaker driver surround with at least one stiffening tab |
EP2457382B1 (en) * | 2009-07-24 | 2013-09-11 | TP Vision Holding B.V. | A sound reproduction system |
GB2474853B (en) | 2009-10-27 | 2014-01-01 | Gp Acoustics Uk Ltd | Loudspeakers |
FR2955444B1 (en) | 2010-01-15 | 2012-08-03 | Phl Audio | COAXIAL SPEAKER SYSTEM WITH COMPRESSION CHAMBER |
FR2955446B1 (en) | 2010-01-15 | 2015-06-05 | Phl Audio | ELECTRODYNAMIC TRANSDUCER WITH DOME AND FLOATING SUSPENSION |
FR2955447B1 (en) * | 2010-01-15 | 2012-08-03 | Phl Audio | ELECTRODYNAMIC TRANSDUCER COMPRISING ACOUSTIC WAVE GUIDE PROVIDING THERMAL DISSIPATION |
FR2955445B1 (en) | 2010-01-15 | 2013-06-07 | Phl Audio | ELECTRODYNAMIC TRANSDUCER WITH DOME AND INTERNAL SUSPENSION |
CN110830891B (en) * | 2018-08-07 | 2021-05-07 | 深圳市宝业恒实业股份有限公司 | High-power frequency-division-self full-frequency loudspeaker |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB665815A (en) * | 1945-01-02 | 1952-01-30 | Marconi Wireless Telegraph Co | Improvements in sound reproducing devices |
FR1001734A (en) * | 1946-08-13 | 1952-02-27 | Subalpine Apparecchiature Elet | Wide band loudspeaker with dual vibrating system |
JPS5353543A (en) * | 1976-10-27 | 1978-05-16 | Nippon Kokan Kk | Welding process for tubes |
DE2833202A1 (en) * | 1978-07-27 | 1980-02-14 | Schering Ag | Aryloxy-alkylsulphonyl-amino-indane derivs. - useful as herbicides, analgesics, antiphlogistics, antipyretics, diuretics, etc. |
US4492826A (en) * | 1982-08-10 | 1985-01-08 | R&C Chiu International, Inc. | Loudspeaker |
JPS59164390U (en) * | 1983-04-15 | 1984-11-05 | 株式会社 双信音響製作所 | Coaxial composite speaker |
GB8402229D0 (en) * | 1984-01-27 | 1984-02-29 | Tannoy Ltd | Moving coil loudspeaker |
MX161230A (en) * | 1985-12-23 | 1990-08-24 | Unique Mobility Inc | IMPROVEMENTS IN LIGHTWEIGHT ELECTROMAGNETIC TRANSDUCER |
-
1988
- 1988-05-09 GB GB888810943A patent/GB8810943D0/en active Pending
-
1989
- 1989-05-05 EP EP89304569A patent/EP0341926B2/en not_active Expired - Lifetime
- 1989-05-05 ES ES89304569T patent/ES2065988T3/en not_active Expired - Lifetime
- 1989-05-05 AU AU35581/89A patent/AU3558189A/en not_active Abandoned
- 1989-05-05 DE DE68919746T patent/DE68919746T3/en not_active Expired - Lifetime
- 1989-05-05 JP JP1505153A patent/JP2766862B2/en not_active Expired - Lifetime
- 1989-05-05 WO PCT/GB1989/000476 patent/WO1989011201A1/en active Application Filing
- 1989-05-05 KR KR1019900700039A patent/KR0171567B1/en not_active IP Right Cessation
- 1989-05-05 AT AT89304569T patent/ATE115352T1/en not_active IP Right Cessation
- 1989-05-05 CA CA000598852A patent/CA1339519C/en not_active Expired - Fee Related
- 1989-05-09 NZ NZ229054A patent/NZ229054A/en unknown
-
1990
- 1990-10-29 GB GB9023490A patent/GB2236929B/en not_active Expired - Lifetime
-
1993
- 1993-07-22 HK HK718/93A patent/HK71893A/en not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
ES2065988T3 (en) | 1995-03-01 |
JP2766862B2 (en) | 1998-06-18 |
GB2236929B (en) | 1992-11-04 |
EP0341926B1 (en) | 1994-12-07 |
EP0341926A1 (en) | 1989-11-15 |
WO1989011201A1 (en) | 1989-11-16 |
DE68919746T2 (en) | 1995-04-20 |
GB9023490D0 (en) | 1991-01-09 |
HK71893A (en) | 1993-07-30 |
EP0341926B2 (en) | 2001-02-07 |
DE68919746T3 (en) | 2001-06-13 |
JPH03504310A (en) | 1991-09-19 |
DE68919746D1 (en) | 1995-01-19 |
CA1339519C (en) | 1997-10-28 |
KR0171567B1 (en) | 1999-03-30 |
GB8810943D0 (en) | 1988-06-15 |
KR900702744A (en) | 1990-12-08 |
ATE115352T1 (en) | 1994-12-15 |
NZ229054A (en) | 1992-03-26 |
GB2236929A (en) | 1991-04-17 |
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