Blaupunkt ProComponent PCw 1000 Owner's Manual page 10

B S
LAUPUNKT AMPLE
This page is offered ONLY as a "starting point" for box construction. Although our woofers work well in a wide range of
box volumes, many people try to build boxes too large assuming they will get better bass response with such monstrous
sized boxes. This is NOT acoustically correct and you need to pay attention to the recommended volumes and predicted
performance data when making your box decision. On the other hand, the more common mistake is to jam a big woofer
in an extremely small box and have virtually no low frequency response due to the "choking" effect of an undersized box.
To help understand how large a "cubic foot" really is we have provided the drawings and tables below with some
common relationships for height, width, and depth. These are not "magical" sizes or relationships in any way, just
popular sizes that will fit in most vehicles and perform well.
All dimensions are stated for exterior sizes and are calculated with compensations for box wall thickness using 3/4"
wood. Also, each volume is adjusted for air volume displacements for a woofer (average 0.15 cu ft for 10/12" woofer)
and a mid size port (3" dia. x 7" long). Please be aware of the small impact that box size fluctuations has on the end
sound quality: loudspeaker enclosure interior size deviations of +/- 5% from ideal are rarely heard. In addition, interior
objects such as port volume displacements and cross braces can usually be forgotten about in all but the smallest of
boxes.
w
w
E
NCLOSURE
SIMPLE RECTANGULAR BOX (outside dimensions in inches)
Nominal Interior Volume
h
d d
SIMPLE "WEDGE" BOX (outside dimensions in inches)
d1
Nominal Interior Volume
(cu. ft.)
h
d2
– 11 –
S
IZES
height
(cu. ft.) (h)
0.5 14
1.0 14
1.5 16
2.0 16
3.0 18
4.0 18
height
(h)
0.5 14
1.0 14
1.5 16
2.0 16
3.0 18
4.0 18
width depth
(w) (d)
15 8
16 12
20 12
26 12
33 12
36 14
width depth depth
(w) (d1) (d2)
15 6.5 9.5
16 10.5 13.5
20 10.5 13.5
26 10.5 13.5
33 10.5 13.5
36 12.5 15.5