Fusion FM-402 - Wiring and Setup; Speaker Load Requirements; Remote Turn-on Connection; Speaker Wiring

ground
as
you
did
for
the
power.
Secure
the
ground
cable
to
the
appropriate
ground
point
using
a
bolt.
star
washer
and
nut.
Spread
silicon
over
the
screw
and
bare
metal
to
prevent
rust.
Now
its
time
to
connect
the
power
and
ground
cables
to
the
amplifier.
Cut
both
cables
to
length.
Crimp
the
yellow
spade
connectors
supplied
to
the
power
and
ground.
Use
a
hex
type
screwdriver
to
loosen
the
+
12V
and
the
GND
connections
on
the
amplifier.
Terminate
the
ground
first,
and
then
the
+
12V
and
please
make
sure
that
you
terminate
them
into
the
correct
terminals.
Then
tighten
the
screws
down
securely.
Speaker
Load
Keep
in
mind
FUSION
'FM'
series
amplifiers
are
high
power
amplifiers
and
not
high
current
amplifiers.
In
other
words
they
require
a
minimum
impedance
of
2
ohms
STEREO
and
4
ohms
bridged
MONO
to
operate
trouble
free.
Too
low
of
an
impedance
could
send
your
FUSION
amplifier
into
protection
mode
and/or
damage
the
amplifier.
Remote
Turn-on
This
terminal
must
be
connected
to
a
switched
+
12V
source.
Typically,
remote
turn-on
leads
are
provided
at
the
head
unit
which
will
turn
on
and
off
the
amplifier
in
correspondence
with
the
source.
If
the
head
unit
does
not
have
a
remote
turn-on
lead,
then
a
power
antenna
wire
can
be
used.
If
neither
of
these
leads
are
present
on
the
head
unit
then
a
switched
+
12V
supply
must
be
used
,
like
the
ACC
+
12V.
Run
a
minimum
of
18
gauge
wire
from
the
amplifier
location
to
the
source
of
the
switched
+
12V
lead.
If
possible,
route
this
wire
on
the
same
side
of
the
vessel
as
your
power
cable.
Connect
the
source
remote
output
to
the
wire.
Go
back
to
the
amplifier
and
cut
the
wire
to
length.
Loosen
the
screw
terminal
marked
REM
on
the
amplifier
using
a
hex
type
screwdriver.
Slip
the
wire
into
the
connector
and
tighten
the
screw
securely.
Speaker
Wiring
Choose
the
correct
speaker
wire
for
your
application.
Most
application
will
require
a
minimum
of
16
gauge.
Route
these
using
the
same
precautions
as
you
did
when
you
ran
the
power
cables.
Terminate
these
wires
at
the
speaker
end
using
insulated
speaker
terminals
(not
supplied)
or
by
soldering
the
connection.
Make
sure
the
speaker
connections
are
positive
to
positive
and
negative
to
negative
.
At
the
amplifier
end,
use
a
#2
Phillips
screwdriver
to
loosen
the
speaker
terminals
on
the
amplifier.
Connect
the
speaker
wires
and
tighten
the
screws
securely.
Check
to
make
sure
you've
maintained
proper
polarity
and
balance
.
Inputs
~
Gain
Setup
Low
Level
Inputs
Be
extra
careful
with
your
RCA
interconnects.
Hiss,
engine
noise,
and
fan
noise
can
easily
be
picked
up
through
RCA
cables
if
run
incorrectly.
Avoid
running
your
RCAs
near
large
wire
looms
and
electric
fans
if
possible.
Run
your
RCA
cables
on
the
opposite
side
of
the
power
cable.
Be
sure
to
check
for
correct
balance
(Red
is
right
and
black
or
white
is
left)
Level
Control
On
the
amplifier,
is
the
LEVEL
control,
this
control
allows
you
to
match
the
input
level
of
the
amplifier
to
the
output
level
of
your
head
unit.
Matching
the
input
can
be
accomplished
in
three
simple
steps:
1.
Turn
the
LEVEL
control
on
the
amplifier
to
minimum.
2.
Turn
up
the
head
unit
and
adjust
to
2/3
maximum
volume
ensuring
that
the
BASS
and
TREBLE
are
set
to
zero.
3.
Adjust
the
LEVEL
control
until
the
desired
volume
is
achieved
without
audible
distortion.
Remember,
the
gain
control
is
not
a
volume
control.
Ignoring
the
three
steps
above
may
leave
you
with
damaged
speakers
and/or
a
damaged
amplifier.