This calculator requires the use of Javascript enabled and capable browsers. This calculator is designed to give the approximate Q of a loudspeaker from the rated coverage angles, although accurate calculation of speaker Q requires the use of a full modeling program to identify the coverage variations compared to a true spherical coverage pattern. Speaker Q and the Directivity Index of a loudspeaker are both somewhat hypothetical, based on formula calculations. Since manufacturing techniques, components and atmospheric conditions vary greatly, so possibly do these calculations as opposed to actual conditions. Loudspeakers also vary widely in vertical and horizontal directivity with changes in frequency and harmonics. Enter the data and click on Calculate.
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