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<blockquote data-quote="Moble Enclosurs" data-source="post: 7630101" data-attributes="member: 634917">Im calculating 2.28ft3@41.35Hz. Keep in mind that Fs is not directly related to cutoff or tuning frequencies. The reason being, when loaded, this Fs changes based on the acoustical restrictions and abilities of the box at that point. You can make a speaker with an Fs of 60Hz, play a 30Hz tune in the right box with authority.But, now the question is, what tuning do YOU want to use? Most on here will say, &quot;41Hz is too high&quot; because that is what they are used to, and depending on their preferences, that is correct. but this is what the sub likes the best is what I am showing you. This is the dual 4 ohm driver with the Fs of 31Hz.But say you want to tune it to the low 30s, then I come up with 3.37ft3@33Hz, as an average of 30-35Hz for sake of argument. Port characteristics change with each change in tuning as well, but most do not account for that so I will leave that part alone for now.//content.invisioncic.com/y282845/emoticons/biggrin.gif.d71a5d36fcbab170f2364c9f2e3946cb.gif</blockquote>

[QUOTE="Moble Enclosurs, post: 7630101, member: 634917"] Im calculating 2.28ft3@41.35Hz. Keep in mind that Fs is not directly related to cutoff or tuning frequencies. The reason being, when loaded, this Fs changes based on the acoustical restrictions and abilities of the box at that point. You can make a speaker with an Fs of 60Hz, play a 30Hz tune in the right box with authority. But, now the question is, what tuning do YOU want to use? Most on here will say, "41Hz is too high" because that is what they are used to, and depending on their preferences, that is correct. but this is what the sub likes the best is what I am showing you. This is the dual 4 ohm driver with the Fs of 31Hz. But say you want to tune it to the low 30s, then I come up with 3.37ft3@33Hz, as an average of 30-35Hz for sake of argument. Port characteristics change with each change in tuning as well, but most do not account for that so I will leave that part alone for now. [IMG]//content.invisioncic.com/y282845/emoticons/biggrin.gif.d71a5d36fcbab170f2364c9f2e3946cb.gif[/IMG] [/QUOTE]

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