Airspace

[rnaiyc]

when figuring out the airspace of a sub box. do you subtract the amount of space taken up by the sub itself. or is it just the volumne of the box?

[TribalVision]

you must allow for the subwoofer displacement for an accurate measurement. Most manufacturers will give their woofer's displacement in their manuals or online.

[20"silverado]

you must allow for the subwoofer displacement for an accurate measurement. Most manufacturers will give their woofer's displacement in their manuals or online.
x2, don't forget to get the airspace AFTER wood thickness too

[rnaiyc]

alright, thats what i thought but my friend was telling me he didnt think so, so i wanted to double check. thanks

[TheOtherSide]

And if you are doing a vented/ported box, you have to subtract the volume of the port as well.

[///M5]

Everyone one is right but for clarification:

Box size in Gross Cubic Feet is the total volume of the box.
Box size in Net cubic feet is the Internal volume of the box after you subtract the space the port is taking up and the sub.

All reliable box tune specs are in Net cubic feet.