GB2015300A - Moving coil loudspeakers - Google Patents
Moving coil loudspeakersInfo
- Publication number
- GB2015300A GB2015300A GB7901079A GB7901079A GB2015300A GB 2015300 A GB2015300 A GB 2015300A GB 7901079 A GB7901079 A GB 7901079A GB 7901079 A GB7901079 A GB 7901079A GB 2015300 A GB2015300 A GB 2015300A
- Authority
- GB
- United Kingdom
- Prior art keywords
- pole piece
- annular
- magnetic
- loudspeaker
- pair
- 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.)
- Granted
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
- 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
Landscapes
- Health & Medical Sciences (AREA)
- Otolaryngology (AREA)
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
Abstract
A loudspeaker of the type including a pair of co-axial speech coils 16, 12, one driving a cone 14 and the other a high-frequency diaphragm 10 at the rear of the loudspeaker, has the speech coils operating in respective annular air gaps in series with one another and formed in a magnetic assembly comprising an outer ring magnet 1, a pair of annular magnetic plates 2, 3 fitted at the ends of the ring magnet 1 and a central magnetic pole piece 8 formed with an axial passage 9 defining a horn for the acoustic output of the diaphragm and extending into the openings in the annular plates to define the two air gaps, the central pole piece 8 being formed with an encircling flange 18 forward of its rear end which is secured to the rear annular plate 3 by way of a non-magnetic member 22 to constitute the sole fixing for the pole piece. <IMAGE>
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB7901079A GB2015300B (en) | 1978-02-22 | 1979-01-11 | Moving coil loudspeakers |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB710878 | 1978-02-22 | ||
| GB7901079A GB2015300B (en) | 1978-02-22 | 1979-01-11 | Moving coil loudspeakers |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB2015300A true GB2015300A (en) | 1979-09-05 |
| GB2015300B GB2015300B (en) | 1982-05-19 |
Family
ID=26241211
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB7901079A Expired GB2015300B (en) | 1978-02-22 | 1979-01-11 | Moving coil loudspeakers |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB2015300B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2367969A (en) * | 2000-09-04 | 2002-04-17 | Eric Edgar Sunderland | Improvements in and relating to compound loudspeakers |
-
1979
- 1979-01-11 GB GB7901079A patent/GB2015300B/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2367969A (en) * | 2000-09-04 | 2002-04-17 | Eric Edgar Sunderland | Improvements in and relating to compound loudspeakers |
| GB2367969B (en) * | 2000-09-04 | 2004-04-21 | Eric Edgar Sunderland | Improvements in and relating to loudspeakers |
Also Published As
| Publication number | Publication date |
|---|---|
| GB2015300B (en) | 1982-05-19 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PCNP | Patent ceased through non-payment of renewal fee | ||
| 732 | Registration of transactions, instruments or events in the register (sect. 32/1977) |