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DIY Audio
Crazy idea for a powered sub
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<blockquote data-quote="John Roberts" data-source="post: 48737" data-attributes="member: 126"><p>Re: Crazy idea for a powered sub</p><p></p><p></p><p></p><p>While I'm not a speaker expert, I know a little about heat sinks, and wiggling the same air back and forth is not the same as simple air flow. It does lower the thermal resistance from heat sink that nearby ambient air from the extra repeat collisions with the same air molecules, and presumably increases the effective heat sink length by the period of the air volume's wave motion back and forth. So definitely something. If the wavelength of the moving air is long relative to the heatsink distance from the port mouth, it could involve cooler outside air that would turn over, so that could work a little better yet. </p><p></p><p> </p><p>JR</p></blockquote><p></p>
[QUOTE="John Roberts, post: 48737, member: 126"] Re: Crazy idea for a powered sub While I'm not a speaker expert, I know a little about heat sinks, and wiggling the same air back and forth is not the same as simple air flow. It does lower the thermal resistance from heat sink that nearby ambient air from the extra repeat collisions with the same air molecules, and presumably increases the effective heat sink length by the period of the air volume's wave motion back and forth. So definitely something. If the wavelength of the moving air is long relative to the heatsink distance from the port mouth, it could involve cooler outside air that would turn over, so that could work a little better yet. JR [/QUOTE]
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