Owner's Manual

VENTED
ENCLOSURE
APPLICATIONS
These boxes are the
enclosure of choice for outrageous street bass and
high
performance
SPL
contests.
If
space
is
not a problem and
you
want
to get the
most from your Comp, try one of these ported designs.
You
will
not be
disappointed.
Cornp subwoofers
will
handle massive amounts of power
in
any of the
recommendecJ
enclosures,
m1nimum
or maximum. The smaller enclosures
are
best for use
in
limited-
space applications The larger recommended enclosures
will
yield slightly more bass
at
the lowest
frequencies.
Vented
Compact
Comp12D4
Comp15D4
Box Volume,
ft
3
(L)
1.75 (49.6)
3 (85)
Port
Opening,
in
x
in
(em
x em) 2
X
12.5
(5.1
X
31
.8)
2.5
X
15.5
(7
X
39.4)
Port
Length,
in
(em)
16
(40.6)
17 (43.
2)
Power Handling, RMS
200
300
Vented
SO
Comp12D4
Comp15D4
Box Volume,
fP
(L)
2.25
(63.7) 4 (113.3)
Port
Opening, in x
in
(em
x em)
2
X
12.5
(5.
1
X
31
.8)
3x
15.5
(7.6x39.4)
Port
Length,
in
(em)
16.375
(41
.6)
16.25
(41
.3)
Power Handling, RMS
200
300
The ported Compact design increases bass efficiency and fits
in
many space-limited applications.
Although
it
is
the smallest recommended ported enclosure, the output from
30
to
80Hz
will
be
considerably higher than that of any sealed box.
The
SPL
I
Deep Bass ported design has even more output
in
this crucial frequency band. The
SPL
/
Deep Bass
is
the largest
and most efficient enclosure design.
INFINITE
BAFFLE
MOUNTING
The infinite baffle mounting method effectively utilizes the rear
deck
and trunk space
of
most sedan type
vehicles.
The Comp subwoofer does not require a sealed enclosure for thumpin' performance. Carefully
install
the subwoofer
in
the baffle. Mark the rear
deck
or parcel shelf for the hole
cut -out diameter of the
subwoofer and cut the hole.
The rear
deck
may need to be reinforced to help hold the weight of the
subwoofer and to keep
it
frorn flexing during playback. Mount 3/4"
(1
.9
em)
thick MDF (Medium Density
Fiberboard) to the bottom of the deck. Mark the MDF and cut the holes.
If
MDF
is
not
avail8.ble
in
your
area, use high grade
p!ywood.
It
is
irnportant to isolate the sound coming off the front of the subwoofer
from the sound
radiating
fr
orn the back of the subwoofer. This isolation
is
usually accomplished by using
the driver
in
a factory speaker location,
or
in
a location with a semi-isolated rear chamber.
Note:
If
rr;ounting
in
trunk spac:e or other
compartments of the vehicle, pay attention to cable
lines,
trunk springs, hinges
an
d seat
r.1echanisms
that
could
cause problems with the operation of the vehicle or stereo system. Carefully lay the
ste
re
o system cables; pay attention to seat fasteners and other items that could harm the cables.
BOX
BUILDING
NOTES
Use 3/4"
(1
.9cm) or thicker MDF (medium density fiberboard) and seal the joints with silicone. Use the
"template"
inside your Camp's shipping carton to mark the mounting hole, then cut directly
on
the line.
These designs need internal bracing. Add triangular bracing between each of the larger unsupported
panels. See
Figure
3.
All
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
4
COMP
SUBWOOFER