Safety precautions
W
A
RNING
To prevent injury or fire, take the following
precautions:
• M
ounting
and
wiring
this
product
requires
s
k
ills
and
e
x
perience
.
For
safety
’
s
sa
k
e
,
leave
the
mounting
and
wiring
wor
k
to
professionals
.
• T
o
prevent
a
short
circuit
,
never
put
or
leave
any
metallic
ob
j
ects
(such
as
coins
or
metal
tools)
inside
the
unit
.
• I
f
the
unit
starts
to
emit
smo
k
e
or
strange
smells
,
turn
off
the
power
immediately
and
consult
your
K
enwood
dealer
.
• D
o
not
touch
the
unit
during
use
because
the
surface
of
the
unit
becomes
hot
and
may
cause
burns
if
touched
.
C
A
UTION
To prevent damage to the machine, take the following
precautions:
• B
e
sure
the
unit
is
connected
to
a
12
V
D
C
power
supply
with
a
negative
ground
connection
.
• D
o
not
open
the
top
or
bottom
covers
of
the
unit
.
• D
o
not
install
the
unit
in
a
spot
e
x
posed
to
direct
sunlight
or
e
x
cessive
heat
or
humidity
. A
lso
avoid
places
with
too
much
dust
or
the
possibility
of
water
splashing
.
• W
hen
replacing
a
fuse
,
only
use
a
new
one
with
the
prescribed
rating
. U
sing
a
fuse
with
the
wrong
rating
may
cause
your
unit
to
malfunction
.
• T
o
prevent
a
short
circuit
when
replacing
a
fuse
,
first
disconnect
the
wiring
harness
.
NOTE
• I
f
you
e
x
perience
problems
during
installation
,
consult
your
K
enwood
dealer
.
• I
f
the
unit
does
not
seem
to
be
wor
k
ing
right
,
consult
your
K
enwood
dealer
.
Cl
e
a
nin
g
t
h
e
u
nit
I
f
the
front
panel
gets
dirty
,
turn
off
the
power
and
wipe
the
panel
with
a
dry
silicon
cloth
or
soft
cloth
.
CAUTION
D
o
not
wipe
the
panel
with
a
hard
cloth
or
a
cloth
dampened
by
volatile
solvents
such
as
paint
thinner
and
alcohol
. T
hey
can
scratch
the
surface
of
the
panel
and
/
or
cause
the
indicator
letters
to
peel
off
.
T
o
pr
e
v
ent
ba
tte
ry r
i
s
e
W
hen
the
unit
is
used
in
the
A
CC
O
N
position
without
turning
the
engine
O
N
,
it
depletes
the
battery
. U
se
it
after
starting
the
engine
.
Pr
ote
c
tion
fu
n
c
tion
T
he
protection
function
is
activated
in
the
following
situations
:
T
his
unit
is
equipped
with
a
protection
function
for
protecting
this
unit
and
your
spea
k
ers
from
various
accidents
or
problems
that
can
occur
.
W
hen
the
protection
function
is
triggered
,
the
amplifier
stops
operating
.
• W
hen
a
spea
k
er
wire
may
be
short
-
circuited
.
• W
hen
a
spea
k
er
output
contacts
ground
.
• W
hen
the
unit
malfunctions
and
a
D
C
signal
is
sent
to
the
spea
k
er
output
.
• W
hen
the
internal
temperature
is
high
and
unit
won
’
t
operate
.
• W
hen
detects
a
low
impedance
at
the
spea
k
er
connections
.
7
W
i
r
in
g
• I
f
a
buzzing
noise
is
heard
from
the
spea
k
ers
when
the
engine
is
running
,
connect
a
line
noise
filter
(optional)
to
each
of
the
battery
wire
.
• D
o
not
allow
the
wire
to
directly
contact
the
edge
of
the
iron
plate
by
using
Grommets
.
•
Connect
the
ground
wire
to
a
metal
part
of
the
car
chassis
that
acts
as
an
electrical
ground
passing
electricity
to
the
battery
‘
s
negative
·
terminal
. D
o
not
turn
the
power
on
if
the
ground
wire
is
not
connected
.
• B
e
sure
to
install
a
protective
fuse
in
the
power
cord
near
the
battery
. T
he
protective
fuse
should
be
the
same
capacity
as
the
unit
’
s
fuse
capacity
or
somewhat
larger
.
• W
hen
more
than
one
power
amplifier
are
going
to
be
used
,
use
a
power
supply
wiring
wire
and
protective
fuse
of
greater
current
-
handling
capacity
than
the
total
ma
x
imum
current
drawn
by
each
amplifier
.
7
Sp
e
ak
e
r s
e
l
e
c
tion
• U
sing
spea
k
ers
with
smaller
input
ratings
than
the
amplifier
’
s
output
power
would
result
in
smo
k
e
generation
or
equipment
failure
.
• U
se
spea
k
ers
that
have
an
impedance
of
4Ω
or
greater
.
W
hen
more
than
one
set
of
spea
k
ers
are
going
to
be
used
,
calculate
the
combined
impedance
of
the
spea
k
ers
and
then
connect
suitable
spea
k
ers
to
the
amplifier
.
<
E
x
ample
>
Combined
impedance
KAC-M1804̲K̲EnFrEs.indd 1
2014/01/23 14:44
