Talk:Line array

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A line array doesnt have too be flown. —Preceding unsigned comment added by 81.156.128.19 (talk) 21:00, 10 January 2008 (UTC)[reply]

True, but I've never met a PA tech who was overly joyed by the news of not being able to fly. ~Wilflet (talk) 17:54, 12 January 2008 (UTC)[reply]

recommended additions to the line array page

explanation of the math involved in line array systems.

My input is the inconsistency in numbers in calculating the difference between spherical SPL and cylindrical (Theory section) "the sound intensity quarters for every doubling of distance from the point source. Sound intensity is the acoustic power per unit area, and it decreases as the surface area increases since the acoustic power is spread over a greater area. The ratio between two acoustic pressures in deciBels is expressed by the equation dB = 20log(p1/p2), so for every doubling of distance from the point source p1 = 1 and p2 = 2, thus there is a sound pressure decrease of approximately 6 dB." shouldn't this p1 and p2 be 1 and 4, as it says the sound intensity "quarters"? Then in the cylinder dB calculation the article says p1 = 1 and p2 = 4 when it should say 2. Then the calculations should be dB = 20log(p1/p2) = 20log(.5) = -6 while 20log(.25) = -12. Rick Granberry (talk) 16:25, 29 January 2018 (UTC)[reply]

applications of line arrays?

-venues suited to line array loudspeakers

-venues that aren't suited to line array loudspeakers

their renewed popularity in the past 10 years

Shouldn't the line array speaker system be contrasted to other type of speaker systems?

-Distributed arrays (exploded clusters)

-conventional arrays of loudspeakers ( Left/right or Left/Center/Right)

The differences in line arrays as the individual box size changes for example: most companies offer varying sizes of line arrays for different budgets

-When decreasing the size of a line arrays individual boxes, at what point does the title of "line array" become less about the mathematic principles and more about marketing hype.

How do we show various examples of line array systems without being accused of pushing a particular product line.

Jarrewr (talk) 00:55, 22 April 2008 (UTC)[reply]

deleted advertising for XLSA

took out the two sections indoor and outdoor. was largely an advertisement for two different products offered by a company, with a text that got progressively more sales pitchey. Bumpoh (talk) —Preceding undated comment was added at 07:56, 23 October 2008 (UTC).[reply]

Wow, Just....Wow

This page has gone from a stub to totally obliterated. The formatting is awful as is the additions by 213.37.99.84. This page needs MAJOR reworking with accurate and far better organized explanations on how all line arrays work. They all have common characteristics that can be explained therefore not pushing any particular product line. Though some on Wikipedia seem to argue that saying anything good about a product that is developed by a sole company (which is usual a historical fact) is advertising. Let's see what we all can do with this destroyed article. --PM - PhilyG ^talk 17:42, 7 November 2008 (UTC)[reply]

At least he's trying bluddy MrSadist (talk) 21:34, 21 September 2023 (UTC)[reply]

"speaker system that is made up of a varying number of vertically arranged units which give the effect of a single sound" is an example of the "awful" state of the artice. Many line arrays have a fixed number of drivers, not variable. —Preceding unsigned comment added by 139.68.134.1 (talk) 16:51, 9 February 2009 (UTC)[reply]

units amount

is this a strictly predefined number? I mean can I buy one line array element(unit) for each side (right and left) rig it up and try to run it that way? There d be no need for delays and stuff, so would it change the whole idea of a line array, becouse it requires some particuliar number of units to be stacked together, or it doesnt? —Preceding unsigned comment added by 77.35.32.95 (talk) 11:11, 18 July 2009 (UTC)[reply]

>1. A single source is not an array. --195.137.93.171 (talk) 21:04, 20 March 2011 (UTC)[reply]

Needs major rework

A lot of the context is just plain wrong, I would not know where to start editing.

A line array does not relate to a line source of sound as used in traffic noise.

They do not throw further than horn systems.

Olson was not the first to describe the increase in directivity. Beranek did so in 1954, and that was probably not news then.

Curved line arrays do not provide a narrow pattern. A general statement is made but it only applies to column speakers.

D'Appolitto's paper was not concerned with line arraying at all.

>>However, the array requires more than 1,000 fifteen-inch drivers, spaced twenty inches center to center, to do it ¡Gimme a break! —Preceding unsigned comment added by Jhernandezdelared (talk • contribs) 09:11, 12 May 2010 (UTC)[reply]

I agree, except it is easy to know where to start - start with the fact that NO loudspeaker is a point source of sound. A typical speaker has a coverage of 90° wide x 40° high. (a typical column is 120° wide x 30° high) {A long throw speaker can be as narrow as 40° wide x 20° high}. And a bunch of small speakers do not have the efficiency, pattern control, or projection needed to cover a large room with sound.

• Coverage is about angles and directivity. While the column shape may affect projection by one or two dB, a horn can increase projection by 20 - 30 dB. The narrower the pattern, the less is the loss per distance. Column speakers are ineffective and useless in churches and auditoriums, they do not reach the back rows of seats. It is a fad for looks only, not for sound. Avoid at any cost ! Wright Sound (talk) 17:02, 6 November 2022 (UTC)[reply]

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They interfere with each other?

> The distance between adjacent drivers is close enough that they constructively interfere with each other to send sound waves farther

Yes, "interference" includes constructive and destructive. But for simplicity and conciseness, how about "they add to each other to..."?

I did a text search for the terms "bass" and "response," and didn't find anything, which doesn't speak good for an article on loudspeakers. For me, the big deal about laying identical drivers next to each other is that they provide lower frequency response than an individual driver, by combining for a lower natural resonance, enabling the ability to deliver lower frequencies that a single driver might not even be able to make audible on its own.

Regarding the lowering of the resonant frequency by creating the line array, the idea is that if all the cones extend at the same time, they all contribute to compressing the air mass in front of the array, which impedes and slows down the cones from extending. Creating a mass of "heavier air" effectively reduces the resonant frequency of the speaker, enabling really low frequencies from a line array. That's all I know, or else I'd edit the article.

But like I say, if the article doesn't include the words bass or response; and maybe even treble is an issue. Nei1 (talk) 21:05, 13 May 2019 (UTC)[reply]