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General Car Audio
Passive Radiator
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<blockquote data-quote="audioholic" data-source="post: 7256114" data-attributes="member: 549629"><p><em>"To design a passive radiator alignment, start with a simple ported alignment using that driver that provides the desired box size and frequency response. Then, use the diameter of your chosen passive radiator as the "port diameter", and use this to calculate the required port length. Work out the volume occupied by this port and then use this to calculate the mass of air occupied by this port. The result is the required mass of the passive radiator. If it is too small, use a larger passive radiator and repeat the calculations."</em> - <a href="http://www.diysubwoofers.org/prd/" target="_blank">The Subwoofer DIY Page - Passive Radiator Systems</a></p><p></p><p>Some good, basic info on pr's in that link.</p></blockquote><p></p>
[QUOTE="audioholic, post: 7256114, member: 549629"] [I]"To design a passive radiator alignment, start with a simple ported alignment using that driver that provides the desired box size and frequency response. Then, use the diameter of your chosen passive radiator as the "port diameter", and use this to calculate the required port length. Work out the volume occupied by this port and then use this to calculate the mass of air occupied by this port. The result is the required mass of the passive radiator. If it is too small, use a larger passive radiator and repeat the calculations."[/I] - [URL="http://www.diysubwoofers.org/prd/"]The Subwoofer DIY Page - Passive Radiator Systems[/URL] Some good, basic info on pr's in that link. [/QUOTE]
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