DB Drive Speed Series Manuale d'uso - Pagina 5
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RECOMMENDED ENCLOSURE
Sealed Enclosure:
ENCLOSURE
Cutout Diameter:
Mounting Depth:
Sealed Box Volume:
Maximum Power:
Nominal Power:
It is recommended to build your enclosure from 3/ 4" thick MDF (medium density fiberboard).
Make sure the enclosure is sealed airtight.
Calculating External Volume: To calculate box volume, measure the outside Width x Height x
Depth of the enclosure. Example 12" x 14" x 9"=1512 ÷ 1728" Cubic feet
Next you must convert cubic inches into cubic feet. To do this, you must divide the cubic inches
total by 1728". Example 1512 ÷ 1728=.875 Cubic feet
Calculating Internal Volume: To calculate the internal (net) volume of the above box you must
first multiply the thickness of the wood you are using by Two(2). Example 3/4" x 2= 1.5"
Next subtract 1.5 from each of the outside measurements of the box.
12 - 1.5 = 10.5
Multiple the new totals (H x W x D) Example: 10.5 x 12.5 x 7.5 = .5696
Next you must convert cubic inches into cubic feet. To do this, you must divide the cubic inch
total by 1728". Example 984.375 ÷ 1728=.5696 cubic feet.
9.05 in. / 230 mm
CALCULATING ENCLOSURES
Width
SPF10D4
3.5 in. / 89 mm
.45 cuft.
1000 Watts
300 Watts
Height
14 - 1.5 = 12.5
5
SPF12D4
11.18 in. / 284 mm
3.5 in. / 89 mm
.55 cuft.
1000 Watts
300 Watts
Depth
9 - 1.5 = 7.5