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<blockquote data-quote="keep_hope_alive" data-source="post: 7904682" data-attributes="member: 576029">In the battle ofLBCvs.n8skowdecision:n8skowreason:provided datamaintained a mature attitudenope.&nbsp; in this thread your title means nothing.&nbsp;&nbsp; people who don&#039;t know you don&#039;t believe you until you produce data with documentation.calculations are only as good as the assumptions you make to derive them.&nbsp; all calculations have assumptions.&nbsp; from your posts, it sounds like you don&#039;t understand what is happening and you just use trial and error and get lucky occasionally - which is true for most SPL competitors.&nbsp; &nbsp;&nbsp; if you understood, you would just apply the necessary corrections to the software predictions.you are welcome to provide results and data to support your claims.&nbsp; your experience is not trivial, the question is if you have been paying enough attention to make it matter.hell, just write your own modeling software.it&#039;s ok to not understand the physics behind sound propagation at low frequencies in an enclosed space.&nbsp; have you ever solved wave equations?&nbsp; they are a PITA, and developing them takes much longer than 3.5 hours.&nbsp; you could spend 40+ hours developing an accurate prediction for the specific vehicle... if you love physics.as to the question - is software modeling useful when SPL is the goal?&nbsp; yes - if and only if you understand what will happen once installed in the vehicle and correct the response curves for it.&nbsp; with enough experience and testing you can predict what the vehicle will do to impedance seen by the amplifier.&nbsp;&nbsp; or you can just use trial and error.the use of tools to measure impedance once installed and compare to predicted is handy, and after a dozen or so iterations you may notice a trend that could be curve-fit - thus increasing accuracy.</blockquote>

[QUOTE="keep_hope_alive, post: 7904682, member: 576029"] In the battle of LBC vs. n8skow decision: n8skow reason: provided data maintained a mature attitude nope. in this thread your title means nothing. people who don't know you don't believe you until you produce data with documentation. calculations are only as good as the assumptions you make to derive them. all calculations have assumptions. from your posts, it sounds like you don't understand what is happening and you just use trial and error and get lucky occasionally - which is true for most SPL competitors. if you understood, you would just apply the necessary corrections to the software predictions. you are welcome to provide results and data to support your claims. your experience is not trivial, the question is if you have been paying enough attention to make it matter. hell, just write your own modeling software. it's ok to not understand the physics behind sound propagation at low frequencies in an enclosed space. have you ever solved wave equations? they are a PITA, and developing them takes much longer than 3.5 hours. you could spend 40+ hours developing an accurate prediction for the specific vehicle... if you love physics. as to the question - is software modeling useful when SPL is the goal? yes - if and only if you understand what will happen once installed in the vehicle and correct the response curves for it. with enough experience and testing you can predict what the vehicle will do to impedance seen by the amplifier. or you can just use trial and error. the use of tools to measure impedance once installed and compare to predicted is handy, and after a dozen or so iterations you may notice a trend that could be curve-fit - thus increasing accuracy. [/QUOTE]

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