When you say that the Radian has an exit angle of 6 degrees, it is not clear to me if that refers to the total included angle or just the half-angle.
Attachment 1 assumes a 3 degree half-angle (6 degree total included angle)
Attachment 2 assumes a 6 degree half-angle (12 degree total included angle)
AT is the half-angle (flare tangent angle) at the throat.
Attachments
David, would you clarify something please. Is it the case that AT in hornresp for LeCleach horns refers to the tangent angle of the walls at the throat, and that geometrical matching here to the driver is appropriate, but that the LeCleach horn calls for a wavefront shape with the middle advanced of what would be the case with a spherical wavefront that is normal to the walls?
Hi AllenB,
AT (Angle at Throat) refers to the tangent angle of the walls at the throat of any Hornresp axisymmetric horn, not just the Le Cléac'h horn. In the Help file, AT is defined as the horn throat entry half-angle in degrees.
For horns with a compression driver, it is good practice to match the exit angle of the compression driver to the throat entry angle of the horn, wherever possible.
The Le Cléac'h horn wavefront is slightly "flattened" compared to a true spherical wavefront (see attachment). For both cases though, the wavefronts are normal to the horn walls and to the horn axis.
See the excellent article "Horn Theory: An Introduction, Part 2" by Bjørn Kolbrek for further information on the Le Cléac'h horn wavefront shape. The article can be downloaded from Bjørn's website page linked below.
Publications
Kind regards,
David
AT (Angle at Throat) refers to the tangent angle of the walls at the throat of any Hornresp axisymmetric horn, not just the Le Cléac'h horn. In the Help file, AT is defined as the horn throat entry half-angle in degrees.
For horns with a compression driver, it is good practice to match the exit angle of the compression driver to the throat entry angle of the horn, wherever possible.
The Le Cléac'h horn wavefront is slightly "flattened" compared to a true spherical wavefront (see attachment). For both cases though, the wavefronts are normal to the horn walls and to the horn axis.
See the excellent article "Horn Theory: An Introduction, Part 2" by Bjørn Kolbrek for further information on the Le Cléac'h horn wavefront shape. The article can be downloaded from Bjørn's website page linked below.
Publications
Kind regards,
David
Attachments
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