4
All of the cubic feet (L) measurements in this manual include the displacement of the woofer.
For the vented enclosures the displacement of the port must be calculated and added to the
internal volume of the fi nal design. Use the outer dimensions of the port and multiply “X x Y x Z”,
convert to cubic feet, for example the KMW10 vented compact design’s external port dimensions
are, using 3/4” (1.9cm) Marine Grade Plywood: [ (1.5” + 1.5” total wall thickness) x (10.5” + 1.5”
total MDF wall thickness) x 14.5”] x (1 ft
3
/ 1728 in
3
) = .30 ft
3
, and add this number to the internal
volume of the enclosure, KMW10’s 1.25 ft
3
+ .30 ft
3
= 1.55 ft
3
. Due to the necessary length of
these ports, you may want to fold the port along the bottom and back walls. It will be impractical to
use round ports for these designs.
Do not install a port opening against a solid surface, such as an internal brace, back-panel or
structural wall, seat or interior panel of your boat. The port opening must remain unobstructed. Use
the smallest dimension of the rectangular port as the minimum amount of space between the port
opening and any solid surface to insure unrestricted airfl ow.
D = 2” x 2” for KMW10
D
D
D
Y
X
Z
Vented Minimum
KMW10
Box Volume [ft³, L]
1.25, 35.4
Port Opening [in x in, cm x cm]
1.5x10.5, 3.8x26.7
Port Length [in, cm]
14.5, 36.8
Power Handling [Watts RMS]
150
Vented Maximum
KMW10
Box Volume [ft³, L]
1.75, 49.6
Port Opening [in x in, cm x cm]
1.5x10.5, 3.8x26.7
Port Length [in, cm]
13.25, 33.7
Power Handling [Watts RMS]
150
The displacement of the port must be calculated and added to the internal volume of the fi nal design.
The dimensions for X, Y, and Z may vary based on the thickness of the material used to make the port.
2014 KM Sub Rev C.indd 4
2014 KM Sub Rev C.indd 4
11/6/2013 3:58:19 PM
11/6/2013 3:58:19 PM
