Alphasonik ALPHA 100 PSW112E Manuel du propriétaire - Page 8

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Calculating speaker enclosure volume is a five step procedure.
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(Make sure you do not forget to subtract the thickness of the wood that you
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have selected to use to build your enclosure.)
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Step One:
Step Two:
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Step Three: Measure Depth
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Step Four: Height x Width x Depth
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Step Five: Divide the results were in step four by 1728
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(12" x 12" x 12"=1728 which equals to 1.0 cu ft.)
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Complete formula should look like this
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Height x Width x Depth / 1728 =__________
Below are illustrated versions of all the steps that you should take.
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(FOR EXAMPLE ONLY)
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Step One
Step Three
Side View
13.5-1.5=12
Patent No: US D478,556 S
Patent No: US 6,601,645 B1
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Patent No: US 6,656,000 B2
Measure Height
Measure Width
The wood that we are using is 0.75" thick
The 1.5 that you see in the formula is the thickness
of the wood.
Calculating thickness of wood:
Measure how thick the wood is then multiply by two.
The reason that you are multiplying by two is each
side of the enclosure.
Left + Right=1.5
12"
Top + Bottom=1.5
Front + Back=1.5
13.5"
.75 x 2=1.50
18 x 12 x 12=2592
2592 / 1728=1.5
1.5 cu. ft. is the results for this enclosure
12"
18"
19.5"
Step Two
13.5-1.5+12
13.5"