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Car Audio Help
Enclosure Design & Construction
4 cubic feet, tuned to 22 Hz, port area >= 64in^2
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<blockquote data-quote="emilimo701" data-source="post: 7779784" data-attributes="member: 622834"><p>[quote name='Kangaroux']"We can use these response graphs to enable us to control the design so we get the response curve we are shooting for. So in the 30 to 35 Hz range we usually find that <strong>this is the common range of quarter wave resonance in vehicles.</strong>"</p><p></p><p>Pulled from [USER=634917]@Moble Enclosurs[/USER] blog: <a href="http://commontuning.blogspot.com/" target="_blank">Why is 30-35Hz used most commonly?</a></p></blockquote><p></p><p>Regarding the cabin gain curve, I intend on measuring that once I find my mic/Firebox, hopefully this weekend. When I do, I&#39;ll post the graphs.</p><p></p><p>It will be a frequency sweep tone (maybe I&#39;ll try pink noise too), with a plain old FFT done on the raw recorded file in MATLAB. Then possibly convolved with a Hanning window.</p><p></p><p><strong>however I forgot to mention something very important</strong>:</p><p>This setup is being designed for <em>open air</em>. It will be used more sparingly than my other woofers (Polk SR 12", and Orion XTRPRO 10" for when I need more cargo space for stuff), most specifically it will be the subwoofer that I use for tailgating, with my hatch up, and all that goodness.</p><p>[/QUOTE]</p>
[QUOTE="emilimo701, post: 7779784, member: 622834"] [quote name='Kangaroux']"We can use these response graphs to enable us to control the design so we get the response curve we are shooting for. So in the 30 to 35 Hz range we usually find that [B]this is the common range of quarter wave resonance in vehicles.[/B]" Pulled from [USER=634917]@Moble Enclosurs[/USER] blog: [url=http://commontuning.blogspot.com/]Why is 30-35Hz used most commonly?[/url][/QUOTE] Regarding the cabin gain curve, I intend on measuring that once I find my mic/Firebox, hopefully this weekend. When I do, I'll post the graphs. It will be a frequency sweep tone (maybe I'll try pink noise too), with a plain old FFT done on the raw recorded file in MATLAB. Then possibly convolved with a Hanning window. [B]however I forgot to mention something very important[/B]: This setup is being designed for [I]open air[/I]. It will be used more sparingly than my other woofers (Polk SR 12", and Orion XTRPRO 10" for when I need more cargo space for stuff), most specifically it will be the subwoofer that I use for tailgating, with my hatch up, and all that goodness. [/QUOTE]
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4 cubic feet, tuned to 22 Hz, port area >= 64in^2
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