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Message: <blockquote data-quote="swimfreak26" data-source="post: 832288" data-attributes="member: 544365">I don't understand what you're getting at with the whole port idea and bending, air flowing, etc..BUT, as far as air space is concerned, it does not include the port volume. The NET enclosure volume, which is what you hear people speak of when they say "I'm in 3 cubes tuned to..." is the volume after speaker, port, and port wall displacements are taken into account.To give you an idea, a box that is 44 x 12.5 x 19.5 will give 4.86 cubic feet GROSS, but after a 54sq inch port tuned to 33 Hz, and .2 feet driver displacement, you get a NET volume of about 3.5 cubes...so the enclosure, though encompassing 5 cubes of air, is only 3.5 cubes.</blockquote>

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