Claims
- 1. A multi-driver loudspeaker combination comprising
- a first transducer of the dynamic radiator type designed to reproduce sound in the lower portion of the audio frequency range, the radiator of the first transducer including a diaphragm,
- a second transducer designed to reproduce sound in the upper portion of the audio frequency range, said second transducer being positioned within the periphery of the said diaphragm,
- and means for mounting the second transducer, the mounting means consisting essentially of a base support, means for mounting the base support from the first transducer radiator to extend away from the first transducer, the base support terminating at an edge, the second transducer including a diaphragm having an edge joined to the first-mentioned edge to support the second transducer from the base support.
- 2. The loudspeaker combination of claim 1 wherein the base support edge and the diaphragm edge are closed generally planar curves.
- 3. The loudspeaker combination of claim 1 wherein the second transducer includes driving means comprising a piezoelectric crystal.
- 4. The loudspeaker combination of claim 1 wherein each of the first and second transducers includes separate driving means,
- the driving means of the first transducer being of the moving coil, permanent magnet type,
- the driving means of the second transducer being of the piezoelectric type.
- 5. The loudspeaker combination of claim 4 wherein the second transducer is mounted non-concentrically with respect to the first transducer.
- 6. The loudspeaker combination of claim 1 wherein the second transducer is mounted non-concentrically with respect to the first transducer.
- 7. The loudspeaker combination of claim 1 wherein the first transducer axis and the second transducer axis are angularly displaced from each other.
- 8. A multi-driver loudspeaker combination comprising
- a first transducer of the dynamic radiator type designed to reproduce sound in the lower portion of the audio frequency range, the radiator of the first transducer including a diaphragm,
- a second transducer designed to reproduce sound in the upper portion of the audio frequency range, said second transducer being positioned within the periphery of the said diaphragm,
- each of the first and second transducers including separate driving means,
- the driving means of the first transducer being of the moving coil, permanent magnet type,
- the driving means of the second transducer being of the piezoelectric type,
- and a base support for mounting the second transducer from the first transducer radiator to extend away from the first transducer,
- the base support comprising a dust cap covering a central region of the first transducer, and a suitable adhesive for mounting the piezoelectric driver from the dust cap.
- 9. The loudspeaker combination of claim 8 wherein the piezoelectric driver axis and the moving coil axis are angularly displaced from each other.
- 10. In a multi-driver loudspeaker combination comprising a first transducer of the dynamic radiator type designed to reproduce sound in the lower portion of the audio frequency range, the first transducer including a dust cap, a second transducer designed to reproduce sound in the upper portion of the audio frequency range, said second transducer including a second transducer diaphragm and a piezoelectric driver, and means for mounting the second transducer from the first transducer consisting essentially of an adhesive for mounting the piezoelectric driver from the dust cap.
Parent Case Info
This is a continuation-in-part of my earlier filed, copening U.S. patent application Ser. No. 489,322, filed Apr. 28, 1983 which is a continuation-in-part of my earlier filed, copending U.S. patent application Ser. No. 383,603, filed June 1, 1982. Both are assigned to the assignee of the present invention.
US Referenced Citations (19)
Foreign Referenced Citations (2)
Number |
Date |
Country |
830351 |
Mar 1960 |
GBX |
2063618 |
Jun 1981 |
GBX |
Non-Patent Literature Citations (1)
Entry |
Audio, "Coaxial Speaker Assembly", Mar. 1954, vol. 38, pp. 48 and 50. |
Continuation in Parts (2)
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Number |
Date |
Country |
Parent |
489322 |
Apr 1983 |
|
Parent |
383603 |
Jun 1982 |
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