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Message: <blockquote data-quote="Moble Enclosurs" data-source="post: 7618334" data-attributes="member: 634917">Yes, the port can get long if you want to keep response smooth. A smaller chamber, with a longer port is ideal for this application, but if you were to go larger, the recommended size I have for 30Hz is around 3.61 cubic ft and for 2-6" round ports, you can get a smaller length. Larger volume with a constant port will lead to smaller lengths. I would not recommend any other volumes than those two. So, for 38Hz, use 2.24 cubic ft, and for 30Hz, use 3.61 cubic ft. Those are optimal for this driver regardless of port length.With all of the limitations listed, I could get more detailed, but that would require a design purchase. This would allow me to further utilize the limited port length to accommodate it with volume and placement for achieving the proper tuning and response. But if you want to use other recommendations, fill free.I just figured I would help as much as I could without getting involved in the design process. //content.invisioncic.com/y282845/emoticons/biggrin.gif.d71a5d36fcbab170f2364c9f2e3946cb.gifI would not tune to 22Hz though. that is not a personal preference, but based on proper parameters. personal preference can obviously be used though, just giving my recommendations.The difference, by the way, is with mechanical limitations. By increasing voltage, you increase the possibility of over-excursion. And with a design that utilizes a round port and being that it is conventional, below tuning and a bit above, excursion is increased quite quickly. So, basically, the applied voltage is taken place by efficiency. Less needed power means less excursion limits reached, and more efficiency means less needed power.</blockquote>

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