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<blockquote data-quote="RAM_Designs" data-source="post: 6586716" data-attributes="member: 566575">That doesn&#039;t matter.&nbsp; If I wanted to have a box like that, how would I do it?&nbsp; According to your logic, it&#039;s impossible.The 12V calc isn&#039;t the issue at hand here, you&#039;re missing the point.&nbsp; The point is that the volume used in the calcs is net volume, after ALL displacements(this includes port displacement).You&#039;re using gross volume(or close to it since you subtracted sub displacement).&nbsp; Even in the link you posted on roe as your &quot;proof&quot; had TommyK saying exactly what I&#039;m saying.&nbsp; In case you missed it, I&#039;ll quote it for you.&quot;The easy way that I calculate up a NET enclosure is like this.1) Figure out what net volume you want2) Figure out the port size and length needed to tune it to what you want3) Figure out the port displacement4) Add 1&amp;amp;3 together5) Design a box that has that much gross airspace&quot;</blockquote>

[QUOTE="RAM_Designs, post: 6586716, member: 566575"] That doesn't matter. If I wanted to have a box like that, how would I do it? According to your logic, it's impossible. The 12V calc isn't the issue at hand here, you're missing the point. The point is that the volume used in the calcs is net volume, after ALL displacements(this includes port displacement). You're using gross volume(or close to it since you subtracted sub displacement). Even in the link you posted on roe as your "proof" had TommyK saying exactly what I'm saying. In case you missed it, I'll quote it for you. "The easy way that I calculate up a NET enclosure is like this. 1) Figure out what net volume you want 2) Figure out the port size and length needed to tune it to what you want 3) Figure out the port displacement 4) Add 1&3 together 5) Design a box that has that much gross airspace" [/QUOTE]

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