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Junior Varsity
Column speakers systems
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<blockquote data-quote="Rob Timmerman" data-source="post: 217086" data-attributes="member: 172"><p>Directivity, whether from a cone driver, a horn or an array, is primarily a function of the size of the emitting area relative to the wavelength. And a column speaker system is going to give you very good directivity along the long axis of the column (usually, the vertical axis), and directivity dictated by the driver choice (which is negligible in the case of the small drivers used in most of the narrow columns) along the short axis of the column. This means that they tend to have very wide horizontal dispersion, and relatively narrow vertical dispersion. </p><p></p><p>The narrow vertical dispersion can help increase the direct to reverberant ratio in tall spaces by reducing the amount of energy that is splattered onto the ceiling and floor, but the wide horizontal dispersion will dump significant energy onto the side walls in narrow spaces, perhaps counteracting the benefits of the vertical directivity. This is likely what is going on in the room you posted a photo of. Like any tool, column loudspeakers need to be used appropriately to get the best results.</p><p></p><p>There are plenty of examples over multiple decades where appropriately applied column loudspeakers (often digitally steered) have increased speech intelligibility in a space while having minimal architectural impact.</p></blockquote><p></p>
[QUOTE="Rob Timmerman, post: 217086, member: 172"] Directivity, whether from a cone driver, a horn or an array, is primarily a function of the size of the emitting area relative to the wavelength. And a column speaker system is going to give you very good directivity along the long axis of the column (usually, the vertical axis), and directivity dictated by the driver choice (which is negligible in the case of the small drivers used in most of the narrow columns) along the short axis of the column. This means that they tend to have very wide horizontal dispersion, and relatively narrow vertical dispersion. The narrow vertical dispersion can help increase the direct to reverberant ratio in tall spaces by reducing the amount of energy that is splattered onto the ceiling and floor, but the wide horizontal dispersion will dump significant energy onto the side walls in narrow spaces, perhaps counteracting the benefits of the vertical directivity. This is likely what is going on in the room you posted a photo of. Like any tool, column loudspeakers need to be used appropriately to get the best results. There are plenty of examples over multiple decades where appropriately applied column loudspeakers (often digitally steered) have increased speech intelligibility in a space while having minimal architectural impact. [/QUOTE]
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