Cross-fired multiple horn loudspeaker system
OwnerMark S. Uredainventor
Life of this patent
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Abstract
The invention relates to a horn loudspeaker system. The horn loudspeaker system includes a pair of vertically displaced horns with cross-fired aiming angles. A common throat section couples the horns to a driver. A substantially asymmetrical baffling is incorporated into the loudspeaker system to further improve the acoustic performance. One advantage of the unique horn loudspeaker system is that it provides a wide horizontal directivity response. Another advantage is that it provides a narrow vertical directivity response.
Claims59
A loudspeaker horn apparatus for broadcasting acoustic signals generated by a driver, comprising:
- a common throat for receiving said signals from a driver;
- first and second sound expansion chambers connected to receive the signals from the common throat;
- the common throat and the sound expansion chambers forming first and second sound paths for propagating said acoustic signals from the driver through said loudspeaker apparatus;
- and
- the sound expansion chambers oriented such that first and second lines coincident with the longitudinal axis of the first and second sound chambers, respectively, are vertically offset and intersect at a point downstream of the common throat when projected onto a horizontal plane.
A method of manufacturing a horn system comprising:
- connecting a driver to first and second sound chambers with a common throat such that the sound expansion chambers form first and second sound paths for propagating acoustic signals from the driver;
- and
- orienting the first and second sound expansion chambers such that first and second lines coincident with the longitudinal axis of the first and second sound chambers, respectively, are vertically offset and intersect at a point downstream of said common throat when projected onto a horizontal plane.
A loudspeaker horn apparatus for broadcasting acoustic signals generated by a driver, comprising:
- a common throat for receiving said signals from a driver;
- first and second sound expansion chambers connected to receive the signals from the common throat;
- the common throat and the sound expansion chambers forming first and second sound paths for propagating said acoustic signals from the driver through said loudspeaker apparatus;
- and
- the sound expansion chambers oriented such that first and second lines coincident with the longitudinal axis of the first and second sound chambers, respectively, are vertically offset and intersect at a point downstream of the common throat when projected onto a horizontal plane, wherein the first and second lines form a crossfire angle (CFA) defined by:
- CFA = NDA H - 1 + NDA H - 2 K
- where NDAH-1 is the nominal horizontal dispersion angle of the first expansion chamber, NDAH-2 is the nominal horizontal dispersion angle of the second expansion chamber and K is between one and four.
A loudspeaker horn apparatus for broadcasting acoustic signals generated by a driver, comprising:
- a common throat for receiving said signals from a driver;
- first and second sound expansion chambers connected to receive the signals from the common throat;
- the common throat and the sound expansion chambers forming first and second sound paths for propagating said acoustic signals from the driver through said loudspeaker apparatus;
- and
- the sound expansion chambers oriented such that first and second lines coincident with the longitudinal axis of the first and second sound chambers, respectively, are vertically offset and intersect at a point downstream of the common throat when projected onto a horizontal plane, wherein the first and second lines intersect at an angle VDA when projected onto a vertical plane, the angle VDA being defined by:
- VDA = NDA V - 1 + NDA V - 2 C
- where NDAV-1 is the nominal vertical dispersion angle of the first expansion chamber, NDAV-2 is the nominal vertical dispersion angle of the second expansion chamber, and C is a parameter that defines the degree of vertical divergence or convergence.
A loudspeaker horn apparatus for broadcasting acoustic signals generated by a driver, comprising:
- a common throat for receiving said signals from a driver;
- first and second sound expansion chambers connected to receive the signals from the common throat;
- the common throat and the sound expansion chambers forming first and second sound paths for propagating said acoustic signals from the driver through said loudspeaker apparatus;
- and
- the sound expansion chambers oriented such that first and second lines coincident with the longitudinal axis of the first and second sound chambers, respectively, are vertically offset and intersect at a point downstream of the common throat when projected onto a horizontal plane, further comprising a substantially asymmetric baffling system in mechanical communication with a mouth of at least one of the sound chambers.
Dependencies are inferred from the claim text.