Alphasonik DYNAMIS DSW512 Manual - Página 8

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Calculating a speaker enclosure volume with a port is a seven step process.

The First six steps are the same as the sealed enclosure. The only

difference is calculating the port displacement.

Step One - Six: Follow the first six steps on the sealed enclosure.

(ILLUSTRATED EXAMPLE ONLY)

If measured internal dimensions you will skip step four.

15" - 1.5" = 13.5"

4.5"

Step Five:

Step Six:

Step Seven:

A = π r²

π * r * r * d = _________ / 1728 = _________

Example:

13.5"

15"

21.5"

23"

21.5 * 12 * 13.5 = 3483

3483 / 1728 = 2.01 cu. ft.

Formula to calculate vent displacement

A = area | r = radius | d = depth

π(3.14) * r(2.25") * r(2.25") * d(7") = 111.27 sq. in.

111.27 / 1728 = 0.06 cu. ft

2.01 - 0.06 = 1.95 cu. ft. enclosure

Step One: 23"

Step Two: 12"

13.5"

12"

Step Three: 13.5"

Step Four:

(W)23 - 1.5 = 21.5"

(H)13.5 - 1.5 = 12"

(D)15 - 1.5 = 13.5"