Owner's Manual

SAFETY
Lh.WARNING
This symbol with
"WARNING"
is
intended
to
alert
the
user
to
the
presence
of
important
instructions. Failure
to
heed
the
instructions
will
result
in
severe
injury
or
death.
Lh.CAUTION
This symbol with
"CAUTION"
is
intended
to
alert
the
user
to
the
presence
of
important
instructions. Failure
to
heed
the
instructions
can result
in
injury
or
unit damage.
~
&
&
CAUTION
CAUTION
CAUTION
To
prevent
injury and damage
to
the
unit, please
read and follow
the
instructions
in
this
manual.
We
want
you
to
enjoy this system,
not
get
a headache.
If
you
feel
unsure
about
installing this system
yourself, have it installed by a qualified Rockford
Fosgate technician.
Before installation,
disconnect
the
battery
negative
(-)
terminal
to
prevent
damage
to
the
unit, fire
adn/or
possible injury.
PRACTICE
SAFE
SOUND™
Continuous
exposure
to
sound
pressure
levels
over
I
OOdB
may
cause
permanent
hearing loss. High
powered
auto
sound
systems
may
produce
sound
pressure
levels well
over
I 30dB.
Use
common
sense
and
practice safe
sound.
DESIGN
FEATURES
The
se
woofers
were
designed
for
use primari
ly
in
small
ported
enclosures.
By
utilizing the la
test
materials and
construction
techniques,
we
are
a
bl
e
to
offer a
speaker
with high
output
at
low
frequencies
while
requiring a minimum
of
operating space.
CARTON CONTENTS
(I)
Power
DVC Subwoofer
(I)
Trim ring
(4) Socket head
trim
ring screws
(8) Socket h
ea
d
wood
scre
ws
(I)
Socket head driver bit
(I)
In
stallation
&
ope
ration manual
2
RECOMMENDED
ENCLOSURES
VENTED
ENCLOSURES
Vented
enclosures vary
only
from
the
sealed enclosure
in
that
a
vent
or
port
is
added
to
"tune"
the
enclosure.
The
enclosures
recommended
are
designed for
great
overall
performance. Larger boxes
tend
to
be
easy
to
tune
to
lower
frequencies
while
medium and
small
boxes
are
easier
to
tune
to
higher frequencies.
The
vented
design
is
less
linear
in
response
than
the
sealed
box
but
with noticeably
more
output
at
the
tuning frequency.
Advantages
of
vented
enclosures:
Higher average
output
than sealed
Tuning frequency can
be
easily adjusted
by
changing
port
length
Deep
bass
response
with
lower
power
requirements
Great
for high
output
with limited
power
BUILDING
AN
ENCLOSURE
To
work
properly,
the
walls
of
the
enclosure
must
be rigid and
not
flex
when subjected
to
the
high
pressures
generated
by
the
speaker's
operation. For optimum performance,
we
recommend
using
3/4"
MDF
(Medium Density Fiberboard) and internal bracing.
The
enclosure should
be
glued
together
and
secured
with
nails
or
screws.
CALCULATING
VOLUME
Calculating
volume
is
merely a
matt
er
of
measuring
the
dimensions
in
inches and using
the
formula: H x W x D divided by 1728
(cubic feet).
See
block below.
Box
Volume
Height"
x
Width"
x
Depth"
Divided
by
(cubic
feet)
1728
If
two
facing sides
are
of
uneven length, add
them
together
and divide
by
two
to
take
the
average. Using this
number
will
give you
the
volume
without
the
necessity
of
calculating
the
box
in
sections and adding
the
sections together.
The
thickness
of
the
baffle material reduc
es
the
int
er
nal
volume
so
this
must
be
subtracted
from
the
outside
dimensions
to
determine
the
internal volume.
The
speaker
it
se
lf
also reduces the
internal volume.
The
amount
of
air displac
ed
by each model
is
listed
on
the
specification
sheet
and should
also
be
subtracted
from
the
gross
volume calculation.