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The example shown is a composite of two predictions made for arrays of Meyer Sound MILO cabinets, one with just three loudspeakers, the other with 20, both at 1kHz. It is clearly possible to see how much more directional, and how much louder, the larger array is.
A line array is a speaker system consisting of multiple loudspeakers mounted in a straight line. It is designed to provide even sound coverage over long distances by using the principle of wave interference. Line arrays are commonly used in large venues like stadiums and concert halls for clear and consistent audio distribution.
What’s a line array? In a nutshell, a line array is a column of speaker cabinets designed to collectively function like one large speaker. We should probably turn back the clock a little before we go on: in the early days of sound reinforcement, one speaker would normally be directed at one portion of the audience. As the demands of concert ...
Jun 17, 2018 · Articulated Arrays Articulated is the ten dollar term for curved. This describes the popular J-Array shape that most manufacturers currently offer. On the other hand, the Duran Audio Intellivox system is a line array that covers from extreme near-field to far-field seating with a straight-line dead-hang approach.
- Point Source
- Line Source
- Phase Cancellation
- A Few Important Caveats
- Fringe Benefits
- Shading
- Line-Array Setup
- Sound Quality
The inverse square law assumes the speaker is radiating omnidirectionally. Except at very low frequencies, this is rarely the case. However as distance increases, even a typically directional loudspeaker (e.g., 90° horizontal dispersion by 90° vertical dispersion) acts like a true point source (i.e. omnidirectional) with respect to how the inverse ...
A line array functions as what’s known as a line source, and therefore will not fall off in level by 6dB each time the distance doubles. Theoretically, it would only drop by 3dB per doubling, but in practice the results aren’t quite that good for a myriad of reasons that are mostly beyond the scope of this writing. However, the overall effect of sp...
Phase cancellation is usually one of the things you try to avoid in a sound system, yet it plays a central role to the way line-array speakers work together to provide a system of speakers with narrow vertical dispersion characteristics. Even with advanced speaker cabinet designs to shape the vertical dispersion, there’s still plenty of natural ove...
While applied phase cancellation can shape the vertical dispersion of the speakers in a line array, their horizontal dispersion is not affected. So in effect, an individual speaker in a line array may wind up with a 90° horizontal dispersion by only a 20° vertical (for example). Also, even though phase cancellation can achieve a line-source distrib...
Line arrays are inherently helpful in acoustically challenging spaces because you can control their vertical dispersion and reduce reflected sound. Keeping sound off of ceilings and floors is a great start, and then choosing speakers with horizontal dispersions that will help you keep excess sound off of the sidewalls gives more benefit.
The exact shape will vary depending on the layout and dimensions of the area needing coverage. You can see how this configuration will inherently put more sound toward the rear of the hall relative to the front rows, which helps with the overall coverage consistency. You can manipulate this further by regulating the power (wattage) delivered to eac...
At the very least, a proper array requires a rigorous mechanical and electronic setup procedure. Because of the complex interactions involved, everything matters — the exact angle of each cabinet, the exact crossover points, the individual driver delays, and sometimes even the filter settings have to all be exact to achieve the best performance.
Even at their very best, line arrays are unlikely to deliver the purity of sound that high-quality single driver or single two- or three-way cabinets offer, which is one reason why they’re much less likely to be found in smaller spaces where a small number of speakers are more appropriate. Cost and space are considerations too, of course.
Feb 1, 2005 · We’ll also assume that a line array is intended to refer to a system of multiple individual line array elements (enclosures) that are specifically designed for arrayability. A line array is a set of radiators (loudspeakers) with spacing that meets very specific criteria that causes the whole array to exhibit greater pattern control (directivity) in the direction of the line.
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Jun 17, 2018 · Line arrays have been around for over a half of a century as column loudspeakers, and other than those made by Rudy Bozak in the U.S., most were voice-range only. Their application was generally for highly reverberant spaces, where a narrow vertical dispersion avoided exciting the reverberant field, provided a higher Q (narrower dispersion pattern) and, as a result, improved intelligibility of ...
