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<blockquote data-quote="Arthur Skudra" data-source="post: 106067" data-attributes="member: 131">Re: Endfire sub array under a stageAs I pointed out earlier, ANY directional sub array requires open space around it in order to perform optimally.&nbsp; Introduce a stage or wall into the equation in close proximity, and the directional pattern is affected, often in an inconvenient manner, as was modeled and illustrated in the paper I quoted from.&nbsp; Unfortunately all currently available sound system modeling programs predicting low frequency coverage can only model under the assumption of a direct anechoic response.&nbsp; As Bennett correctly pointed out, you need to use boundary element method analysis to be able to take into account any boundary surfaces such as floors, walls, ceiling, stage, etc.&nbsp; Maybe in a few years BEM will be affordable and attainable for the masses as our computers become more powerful and the software made easier to use.&nbsp; Until then we need to acknowledge and understand the limitations of the tools we have currently at our disposal.</blockquote>

[QUOTE="Arthur Skudra, post: 106067, member: 131"] Re: Endfire sub array under a stage As I pointed out earlier, ANY directional sub array requires open space around it in order to perform optimally. Introduce a stage or wall into the equation in close proximity, and the directional pattern is affected, often in an inconvenient manner, as was modeled and illustrated in the paper I quoted from. Unfortunately all currently available sound system modeling programs predicting low frequency coverage can only model under the assumption of a direct anechoic response. As Bennett correctly pointed out, you need to use boundary element method analysis to be able to take into account any boundary surfaces such as floors, walls, ceiling, stage, etc. Maybe in a few years BEM will be affordable and attainable for the masses as our computers become more powerful and the software made easier to use. Until then we need to acknowledge and understand the limitations of the tools we have currently at our disposal. [/QUOTE]

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