If we require a volume of 2.5cuft then we multiply this by 1728 2.5 x 1728= 4320 cubic inches.
We now take 2 known enclosure dimensions that we will use, e.g height and width and divide this figure by them which will give us
the depth, for example our height is 15”, our width is 20”.
So our depth is 14.4” for this enclosure.
Note : this formula is for the INTERNAL dimensions, please add the thickness of the material used to construct the enclosure to
the formula to give you the outside dimensions.
So assuming we are using 1 inch material we need to add 2 thicknesses to each internal dimension to allow for material top and
bottom, so the external dimensions for this enclosure would be 17 x 22 x 16.4 inches.
The displacement of the woofer and the displacement of the port must also be added to the required volume before you calculate
the required sizes needed to build your enclosure.
NOTE- When using a port you must leave a gap at least equal to the shortest measurement of the port between the rear of the
enclosure and the port.
Summary of Contents for Space 12 D2
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