in the simplest terms yesso if i need a 2.5ft box then i just make it 2.5 and throw in the port?
No. The airspace taken up by the port is NOT counted for net volume. Net volume is just the air in the enclosure that pushes against the port.so if i need a 2.5ft box then i just make it 2.5 and throw in the port?
i think he meant 2.5 cu. ft. internal volume. at least thats what i thought he meant //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gifNo. The airspace taken up by the port is NOT counted for net volume. Net volume is just the air in the enclosure that pushes against the port.
For example, if you have an enclosure with 12"x12"x12" internal dimensions and then add a port from the outside of the box (not going into it) the enclosure would still be a 1 cubic foot ported enclosure. But, if you put the port inside the 1 cube enclosure, you're left with a net volume that is less than 1 cube. You wouldn't call it a 1 cube box anymore because the port took up airspace.
Couldn't have been said any better. Just account for port volume and subwoofer displacement and then add to your net volume.No. The airspace taken up by the port is NOT counted for net volume. Net volume is just the air in the enclosure that pushes against the port.
For example, if you have an enclosure with 12"x12"x12" internal dimensions and then add a port from the outside of the box (not going into it) the enclosure would still be a 1 cubic foot ported enclosure. But, if you put the port inside the 1 cube enclosure, you're left with a net volume that is less than 1 cube. You wouldn't call it a 1 cube box anymore because the port took up airspace.