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18" Sub Ported Enclosure Pointers...
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<blockquote data-quote="Moble Enclosurs" data-source="post: 7640155" data-attributes="member: 634917"><p>Well for that sub, and those box parameters, you are looking at a tuning very close to your expected one, but that is not where the resonance will be. The resonance will be around the 35-40Hz range for a peak. It is not going to be as musical as it can be. In fact, in the vehicle, it may have a 4th order type of sound with a little more low end than usual.</p><p></p><p>The needed round port area of this particular sub is around 10" port or around a minimum round port of 8" or (2) 6" ports for optimum performance. Your box uses a single 6, so I would double up on that if possible.</p><p></p><p>This will give you around a mid30s tuning and better cone control from 30-45Hz as well as a smoother phase response. ALso, It would be recommended to put the port(s) on the side or top of the box instead if changes are made.</p><p></p><p>But if you do not make changes, and just wanted to know about what it could do, then I would say it is very conventional and would work quite well as is. And the recommended box volume of this sub anyways is around 8-8.25 cubic ft so that is good that you are only just below that. It will work, but recommendations are given.</p><p></p><p>Keep in mind, this is only very generically calculated and can be optimized MUCH better with a full design and does not include cabin transfer function either, which can make or break a design. But, this will give you something to work with if you want. //content.invisioncic.com/y282845/emoticons/biggrin.gif.d71a5d36fcbab170f2364c9f2e3946cb.gif</p></blockquote><p></p>
[QUOTE="Moble Enclosurs, post: 7640155, member: 634917"] Well for that sub, and those box parameters, you are looking at a tuning very close to your expected one, but that is not where the resonance will be. The resonance will be around the 35-40Hz range for a peak. It is not going to be as musical as it can be. In fact, in the vehicle, it may have a 4th order type of sound with a little more low end than usual. The needed round port area of this particular sub is around 10" port or around a minimum round port of 8" or (2) 6" ports for optimum performance. Your box uses a single 6, so I would double up on that if possible. This will give you around a mid30s tuning and better cone control from 30-45Hz as well as a smoother phase response. ALso, It would be recommended to put the port(s) on the side or top of the box instead if changes are made. But if you do not make changes, and just wanted to know about what it could do, then I would say it is very conventional and would work quite well as is. And the recommended box volume of this sub anyways is around 8-8.25 cubic ft so that is good that you are only just below that. It will work, but recommendations are given. Keep in mind, this is only very generically calculated and can be optimized MUCH better with a full design and does not include cabin transfer function either, which can make or break a design. But, this will give you something to work with if you want. [IMG]//content.invisioncic.com/y282845/emoticons/biggrin.gif.d71a5d36fcbab170f2364c9f2e3946cb.gif[/IMG] [/QUOTE]
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18" Sub Ported Enclosure Pointers...
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