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Bad Line Array Designs
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<blockquote data-quote="thylantyr" data-source="post: 2565965" data-attributes="member: 560358"><p>Jim bashes the line arrays that I posted in this thread supporting my claims...</p><p></p><p>hee hee harr harr........</p><p></p><p><a href="http://audioroundtable.com/ArraySpeakers/messages/1333.html" target="_blank">http://audioroundtable.com/ArraySpeakers/messages/1333.html</a></p><p></p><p><em>The Alltronics focused array is what I call a </em><em><strong>double dumb speaker</strong></em><em>. First, the designer must be crazy to spend money to develop such a limited design and secondly, the purchaser must be crazy to pay over $20K for a system with those shortcomings. </em></p><p></p><p><em> </em></p><p></p><p><em>If you visit the </em><a href="http://www.atssounds.com" target="_blank"><em>http://www.atssounds.com</em></a><em> website that describes these speakers they state: </em></p><p></p><p><em> </em></p><p></p><p><em>"The “sweet spot” is approximately one foot wide, three feet deep, and only 3 inches tall. Persons outside the spot will experience a very pleasant, full sound, comparable in quality to many fine speaker systems. But the person inside the listening area will experience a sonic experience which is breathtaking in its presence, clarity, depth, and accuracy."</em></p><p></p><p><em> </em></p><p></p><p><em>That is truly a single chair ride in anybody's book. If you slump or sit up in your chair, you lose the magic experience.</em></p><p></p><p><em> </em></p><p></p><p><em>Just how many of these focused arrays do they really plan to sell anyway? </em><em><strong>How many fools in the universe?</strong></em></p><p></p><p><em> </em></p><p></p><p><em>Jim </em></p><p></p><p><a href="http://audioroundtable.com/ArraySpeakers/messages/1332.html" target="_blank">http://audioroundtable.com/ArraySpeakers/messages/1332.html</a></p><p></p><p><em><strong>Gallo's speakers focus on their looks vs. any pretext of sound engineering</strong></em><em> so keep that in mind when you see such a design. </em><em><strong>Unless Gallo is operating in a different universe than we are</strong></em><em>, they the elements of acoustical physics still apply to his designs versus the rest of us. </em></p><p></p><p><em> </em></p><p></p><p><em>The intermixed spacing of woofers and tweeters is still subject to the same combing concerns as more conventional arrays. This is especially the case for the woofers. The center to center spacing between the woofers has to be at least 8 inches apart so figure on what such a spacing will impact combing from the woofers. This combing isn't a good thing by any means. The tweeters are likely ribbons so they will be less apt to exhibit combing effects if the vertical plane radiation overlap is somewhat limited. Short ribbon tweeters do have more vertical plane overlap vs. longer ribbon versions but the overlap tends to diminish as frequency increases which reduces combing as I explain in my white paper. </em></p><p></p><p><em> </em></p><p></p><p><em>While Gallo claims no crossover, the low pass filter on the woofers is part of a crossover per se. In reality he is using the acoustical roll off characteristics of these drivers and the low pass filter on the woofers to effect a crossover. Line arrays with low order crossovers tend to have more issues with interferences and combing so I would not suggest that this design concept is worth of emulation.</em></p><p></p><p><em> </em></p><p></p><p><em>Jim </em></p><p></p><p>//content.invisioncic.com/y282845/emoticons/beatdeadhorse5.gif.5d70132dea1eb89b73bf2fdbb6027dd6.gif//content.invisioncic.com/y282845/emoticons/handclap.gif.0c301076f534e244f0460706894f19e0.gif//content.invisioncic.com/y282845/emoticons/woot.gif.aaa6090e619a97b6090d16dd863c5a69.gif</p></blockquote><p></p>
[QUOTE="thylantyr, post: 2565965, member: 560358"] Jim bashes the line arrays that I posted in this thread supporting my claims... hee hee harr harr........ [URL="http://audioroundtable.com/ArraySpeakers/messages/1333.html"]http://audioroundtable.com/ArraySpeakers/messages/1333.html[/URL] [I]The Alltronics focused array is what I call a [/I][I][B]double dumb speaker[/B][/I][I]. First, the designer must be crazy to spend money to develop such a limited design and secondly, the purchaser must be crazy to pay over $20K for a system with those shortcomings. [/I] [I] [/I] [I]If you visit the [/I][URL="http://www.atssounds.com"][I]http://www.atssounds.com[/I][/URL][I] website that describes these speakers they state: [/I] [I] [/I] [I]"The “sweet spot” is approximately one foot wide, three feet deep, and only 3 inches tall. Persons outside the spot will experience a very pleasant, full sound, comparable in quality to many fine speaker systems. But the person inside the listening area will experience a sonic experience which is breathtaking in its presence, clarity, depth, and accuracy."[/I] [I] [/I] [I]That is truly a single chair ride in anybody's book. If you slump or sit up in your chair, you lose the magic experience.[/I] [I] [/I] [I]Just how many of these focused arrays do they really plan to sell anyway? [/I][I][B]How many fools in the universe?[/B][/I] [I] [/I] [I]Jim [/I] [URL="http://audioroundtable.com/ArraySpeakers/messages/1332.html"]http://audioroundtable.com/ArraySpeakers/messages/1332.html[/URL] [I][B]Gallo's speakers focus on their looks vs. any pretext of sound engineering[/B][/I][I] so keep that in mind when you see such a design. [/I][I][B]Unless Gallo is operating in a different universe than we are[/B][/I][I], they the elements of acoustical physics still apply to his designs versus the rest of us. [/I] [I] [/I] [I]The intermixed spacing of woofers and tweeters is still subject to the same combing concerns as more conventional arrays. This is especially the case for the woofers. The center to center spacing between the woofers has to be at least 8 inches apart so figure on what such a spacing will impact combing from the woofers. This combing isn't a good thing by any means. The tweeters are likely ribbons so they will be less apt to exhibit combing effects if the vertical plane radiation overlap is somewhat limited. Short ribbon tweeters do have more vertical plane overlap vs. longer ribbon versions but the overlap tends to diminish as frequency increases which reduces combing as I explain in my white paper. [/I] [I] [/I] [I]While Gallo claims no crossover, the low pass filter on the woofers is part of a crossover per se. In reality he is using the acoustical roll off characteristics of these drivers and the low pass filter on the woofers to effect a crossover. Line arrays with low order crossovers tend to have more issues with interferences and combing so I would not suggest that this design concept is worth of emulation.[/I] [I] [/I] [I]Jim [/I] [IMG]//content.invisioncic.com/y282845/emoticons/beatdeadhorse5.gif.5d70132dea1eb89b73bf2fdbb6027dd6.gif[/IMG][IMG]//content.invisioncic.com/y282845/emoticons/handclap.gif.0c301076f534e244f0460706894f19e0.gif[/IMG][IMG]//content.invisioncic.com/y282845/emoticons/woot.gif.aaa6090e619a97b6090d16dd863c5a69.gif[/IMG] [/QUOTE]
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