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Fun with Damping Factor
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<blockquote data-quote="Phil Graham" data-source="post: 82598" data-attributes="member: 430"><p>Re: Fun with Damping Factor</p><p></p><p></p><p></p><p>Jason,</p><p></p><p>Ignore the idea of damping factor here, its a relatively foolish notion in the world of audio that should go away.</p><p></p><p>If the boxes are vented (a good assumption for pro boxes) then the one thing that actually does matter is how will the series resistance change the electrical damping (Qes) of the driver. The increase in Re raise the Qes and change the shape of the LF response near the box tuning frequency (Fb). This effect can be on the order of several dB.</p><p></p><p>This series Re will also make minor changes to the behavior of the passive mid high crossover, but that's a topic for another day, and that effect is comparatively minor compared to the LF behavior.</p><p></p><p>Generally the purely parallel method is preferred, but perhaps when I'm not in the office we could do another post with a comparison of both. wiring types. It can get rather involved as the drivers have an impedance, and not merely a resistance.</p></blockquote><p></p>
[QUOTE="Phil Graham, post: 82598, member: 430"] Re: Fun with Damping Factor Jason, Ignore the idea of damping factor here, its a relatively foolish notion in the world of audio that should go away. If the boxes are vented (a good assumption for pro boxes) then the one thing that actually does matter is how will the series resistance change the electrical damping (Qes) of the driver. The increase in Re raise the Qes and change the shape of the LF response near the box tuning frequency (Fb). This effect can be on the order of several dB. This series Re will also make minor changes to the behavior of the passive mid high crossover, but that's a topic for another day, and that effect is comparatively minor compared to the LF behavior. Generally the purely parallel method is preferred, but perhaps when I'm not in the office we could do another post with a comparison of both. wiring types. It can get rather involved as the drivers have an impedance, and not merely a resistance. [/QUOTE]
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