Line array loudspeakers, a design choice available for decades, have seen increased adoption recently due to their ability to provide effective sound distribution within a compact form, according to PSW Staff. These speakers are especially useful in situations requiring both efficient operation and uniform coverage while minimizing visual impact.
Several features make column loudspeakers appealing, particularly in spaces with significant reverberation. Their design results in broad horizontal sound dispersion, reduced vertical dispersion above and below the speaker, and consistent sound quality within the vocal range. The article explores the underlying principles of column array loudspeakers and provides an overview of several recent models.
The spacing between drivers plays a key role in determining the highest frequency at which the array functions as a line source, while the length of the speaker affects the directionality of lower frequencies. For example, loudspeakers utilizing 6.5-inch drivers, when closely spaced, typically couple up to approximately 1,000 Hz. Smaller drivers, such as those with a 4-inch diameter, couple around 1,600 Hz, and 2-inch drivers around 3,300 Hz.
This article aims to provide a starting point for those considering column loudspeakers, outlining their benefits and technical considerations.
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