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Message: <blockquote data-quote="helotaxi" data-source="post: 2427260" data-attributes="member: 550915"><p>Tuning an enclosure is basically matching the cross-sectional area and length of a port to the volume of the enclosure to get it to resonate at the correct frequency for the sub installed in the enclosure.  The basic physics behind the design is that the sound coming out of the port is delayed so that it perfectly reinforces the direct sound from the sub at the resonance frequency.  The reinforcment is less that perfect as you move away from the resonant freq.  The inertia of the air moving in and out of the port also serves to control the motion of the sub at resonance and above.  You can find the tuning equations in the tutorial section of the JL Audio website as well as many other places on the web.</p></blockquote><p></p>

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