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Bad Line Array Designs
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<blockquote data-quote="thylantyr" data-source="post: 2566145" data-attributes="member: 560358"><p>Have you read his document?</p><p></p><p><a href="http://www.audiodiycentral.com/resource/pdf/nflawp.pdf" target="_blank">http://www.audiodiycentral.com/resource/pdf/nflawp.pdf</a></p><p></p><p>This document is based on research data below; You can read all</p><p></p><p>the research data going back 30 years or read the simple text.</p><p></p><p>Read post #28 again. Gallo claims 'line source' when it obviously is not, it's</p><p></p><p>impossible because he's using seperate drivers {many elements = line array}.</p><p></p><p>So....Gallo claims it's a line source, but it's not. If you claim that it's a line array instead,</p><p></p><p>that's ok, but it's the worse design if you wanted to mimic it.</p><p></p><p>Don't you think it's cool to look at commercial product and analyze it?</p><p></p><p>It's educational and makes you stronger. It might even motivate a person</p><p></p><p>to build their own and it will be superior without having to spend $20k.</p><p></p><p><strong>Line Array References</strong></p><p></p><p>[1] M. Urban, C. Heil,and P. Bauman, “Wavefront Sculpture Technology”, presented at</p><p></p><p>the 111th AES Convention, New York, September 21-24, 2001.</p><p></p><p>[2] C. Heil, and M. Urban, “Sound Fields Radiated by Multiple Sound Sources Arrays”,</p><p></p><p>presented at the 92nd AES Convention, Vienna, March 24-27, 1992.</p><p></p><p>[3] M. Ureda, “Line Arrays: Theory and Applications”, presented at the 110th AES</p><p></p><p>Convention, Amsterdam, May 12-15,2001.</p><p></p><p>[4] J. Eargle, D. Scheirman, and M. Ureda, “JBL’s Vertical Technology: Achieving</p><p></p><p>Optimum Line Array Performance Through Predictive Analysis, Unique Acoustics</p><p></p><p>Elements and a New Loudspeaker System”, presented at the AES Convention,</p><p></p><p>September , 2000 and also available from:</p><p></p><p><a href="http://www.jblpro.com/vertec1/VerTec%20WP%202.3.pdf" target="_blank">http://www.jblpro.com/vertec1/VerTec%20WP%202.3.pdf</a></p><p></p><p>[5] M. Ureda, “ ‘J’ and ‘Spiral’ Line Arrays”, presented at the 111th AES Convention, New</p><p></p><p>York, September 21-24, 2001.</p><p></p><p>[6] S. Lipshitz and J. Vanderkooy, “The Acoustics Radiation of Line Sources of Finite</p><p></p><p>Length”, presented at the 81st AES Convention, Los Angeles, November 12-16, 1986.</p><p></p><p>[7] P. Taylor, “The Line-Source Loudspeaker and Its Applications”, Vol. 44, No. 3 British</p><p></p><p>Kinematography (J. Brit. Kinematograph Soc.), vol. 44, 1964 March.</p><p></p><p>[8] D. Smith, “Discrete-Element Line Arrays – Their Modeling and Optimization, J. Audio</p><p></p><p>Eng. Soc., vol. 45, no. 11, 1997 November.</p><p></p><p>[9] G. Augspurger, “Near-Field and Far-Field performance of Large Woofer Arrays”, J.</p><p></p><p>Audio Eng. Soc., vol.38, no. 4, 1990 April.</p><p></p><p>[10] E. Geddes and L. Lee, Audio Transducers, p.68. 2002.</p><p></p><p>[11] M. Ureda, “Pressure Response of Lines Sources”, presented at the 113th AES</p><p></p><p>Convention, Los Angeles, October 5-8, 2002.</p><p></p><p>.</p></blockquote><p></p>
[QUOTE="thylantyr, post: 2566145, member: 560358"] Have you read his document? [URL="http://www.audiodiycentral.com/resource/pdf/nflawp.pdf"]http://www.audiodiycentral.com/resource/pdf/nflawp.pdf[/URL] This document is based on research data below; You can read all the research data going back 30 years or read the simple text. Read post #28 again. Gallo claims 'line source' when it obviously is not, it's impossible because he's using seperate drivers {many elements = line array}. So....Gallo claims it's a line source, but it's not. If you claim that it's a line array instead, that's ok, but it's the worse design if you wanted to mimic it. Don't you think it's cool to look at commercial product and analyze it? It's educational and makes you stronger. It might even motivate a person to build their own and it will be superior without having to spend $20k. [B]Line Array References[/B] [1] M. Urban, C. Heil,and P. Bauman, “Wavefront Sculpture Technology”, presented at the 111th AES Convention, New York, September 21-24, 2001. [2] C. Heil, and M. Urban, “Sound Fields Radiated by Multiple Sound Sources Arrays”, presented at the 92nd AES Convention, Vienna, March 24-27, 1992. [3] M. Ureda, “Line Arrays: Theory and Applications”, presented at the 110th AES Convention, Amsterdam, May 12-15,2001. [4] J. Eargle, D. Scheirman, and M. Ureda, “JBL’s Vertical Technology: Achieving Optimum Line Array Performance Through Predictive Analysis, Unique Acoustics Elements and a New Loudspeaker System”, presented at the AES Convention, September , 2000 and also available from: [URL="http://www.jblpro.com/vertec1/VerTec%20WP%202.3.pdf"]http://www.jblpro.com/vertec1/VerTec%20WP%202.3.pdf[/URL] [5] M. Ureda, “ ‘J’ and ‘Spiral’ Line Arrays”, presented at the 111th AES Convention, New York, September 21-24, 2001. [6] S. Lipshitz and J. Vanderkooy, “The Acoustics Radiation of Line Sources of Finite Length”, presented at the 81st AES Convention, Los Angeles, November 12-16, 1986. [7] P. Taylor, “The Line-Source Loudspeaker and Its Applications”, Vol. 44, No. 3 British Kinematography (J. Brit. Kinematograph Soc.), vol. 44, 1964 March. [8] D. Smith, “Discrete-Element Line Arrays – Their Modeling and Optimization, J. Audio Eng. Soc., vol. 45, no. 11, 1997 November. [9] G. Augspurger, “Near-Field and Far-Field performance of Large Woofer Arrays”, J. Audio Eng. Soc., vol.38, no. 4, 1990 April. [10] E. Geddes and L. Lee, Audio Transducers, p.68. 2002. [11] M. Ureda, “Pressure Response of Lines Sources”, presented at the 113th AES Convention, Los Angeles, October 5-8, 2002. . [/QUOTE]
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