Alphasonik HYPER HSW210 Manuel - Page 8

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Alphasonik HYPER HSW210 Manuel
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.
7"
15" - 1.5" = 13.5"
7
4"
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"