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Junior Varsity
Time/transient smearing of the arrival of sound from multiple sources.
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<blockquote data-quote="Peter Morris" data-source="post: 214025" data-attributes="member: 652"><p>Something that behaves as a point source with the appropriate directivity for the space its in will always sound the best. As you flatten phase response it will sound more real and the stereo image will have more depth. We can hear very small time arrival differences, that's how we can determine where things are located in space.</p><p></p><p>The trick is being able to combine multiple drivers to cover the required frequency range and SPL needed. In this respect I think Danley has done better than anyone if you need something that goes loud.</p><p></p><p>The next trick is being able to get multiple reasonable size/weight boxes (e.g. <100kgs) to combine in a scalable fashion and get good results. This is where the line array comes in; early attempts were OK but some of the new designs are much much better.</p><p></p><p>They don’t sound as good as a point source but they offer flexibility and scalability in a reasonable size enclosure … pick your compromise.</p><p></p><p>Danley don’t really offer this scalability.</p><p></p><p>The spacing rules are not as simple as some think. The drivers do not behave as a pure point source. They are more of a plane source and if you can cover about 82% of the radiating area/line with a rigid diaphragm and get the diaphragms close enough then all is good … but you can’t get that much area coverage with a round diaphragm.</p><p></p><p>Some of the elements are horn loaded where the shape of the wave front coming from the horn is important and the distance the mouths are apart becomes critical not the spacing of the compression drivers.</p><p></p><p>Then you may need to control what happens at the top and bottom of the array … and … and …</p></blockquote><p></p>
[QUOTE="Peter Morris, post: 214025, member: 652"] Something that behaves as a point source with the appropriate directivity for the space its in will always sound the best. As you flatten phase response it will sound more real and the stereo image will have more depth. We can hear very small time arrival differences, that's how we can determine where things are located in space. The trick is being able to combine multiple drivers to cover the required frequency range and SPL needed. In this respect I think Danley has done better than anyone if you need something that goes loud. The next trick is being able to get multiple reasonable size/weight boxes (e.g. <100kgs) to combine in a scalable fashion and get good results. This is where the line array comes in; early attempts were OK but some of the new designs are much much better. They don’t sound as good as a point source but they offer flexibility and scalability in a reasonable size enclosure … pick your compromise. Danley don’t really offer this scalability. The spacing rules are not as simple as some think. The drivers do not behave as a pure point source. They are more of a plane source and if you can cover about 82% of the radiating area/line with a rigid diaphragm and get the diaphragms close enough then all is good … but you can’t get that much area coverage with a round diaphragm. Some of the elements are horn loaded where the shape of the wave front coming from the horn is important and the distance the mouths are apart becomes critical not the spacing of the compression drivers. Then you may need to control what happens at the top and bottom of the array … and … and … [/QUOTE]
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Junior Varsity
Time/transient smearing of the arrival of sound from multiple sources.
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