Fusion FM-504 - Trouble Shooting

5
Bass
Boost:
This
is
a
variable
control
to
increase
the
bass
boost
at
45Hz
from
o
-+
I8dB
of
gain,
adjust
to
suit.
6
Subsoni(
Filter:
This
is
a
variable
control
filters
out
all
Sub
Bass
Frequencies
below
the
set
point
at
I8dB/octave.
7
Level:
This
allows
level
adjustment
of
the
input
signal.
Use
this
control
to
correctly
match
the
head
unit
to
the
amplifier.
To
set
this
control
correctly,
turn
the
amplifier
level
to
MIN
and
the
head
unit
to
3/4
volume,
with
the
BASS
and
TREBLE
on
zero
,
then
slowly
turn
up
this
amplifier
level
control
towards
the
MAX
end
of
the
control.
NOTE:
If
the
sound
becomes
distorted,
turn
this
control
down.
8
front
RCA
Input:
Connect
these
RCA
connectors
to
the
front
LOW
LEVEL
output
connection
from
the
head
unit.
9
Rear
RCA
Input:
Connect
these
RCA
connectors
to
the
rear
LOW
LEVEL
output
connection
from
the
head
unit.
10
RCA
Output:
Use
these
RCA
Output
connectors
to
connect
to
a
secondary
amplifier.
This
output
is
a
SUMMED
OUTPUT
connection
derived
from
the
front
RCA
input
and
the
rear
RCA
input
connectors.
11
6round
Connedion:
Connect
directly
to
suitable
ground
point
via
a 4
gauge
power
cable.
NOTE:
This
is
to
be
the
first
wire
to
connect
when
wiring
up
amplifiers.
Damage
could
result
of
this
is
not
done.
12
+
12V
Connection:
This
must
be
connected
to
the
battery
positive
(+)
terminal
via
a 4
gauge
power
cable
and
with
an
inline
fuse
or
circuit
breaker
at
the
battery
end.
NOTE:
This
is
to
be
the
last
wire
to
connect
up
during
installa-
tion
as
damage
could
result.
13
Remote
Connection:
This
input
is
for
turning
the
amplifier
on
and
off.
This
requires
a
switched
positive
(+
12V)
to
power
'ON'
the
amplifier,
this
can
be
found
on
the
rear
of
the
head
unit
in
the
form
of
an
electric
antenna
output,
or
a
remote
on
output.
If
not
available
you
can
wire
to
the
ACC
position
on
the
key.
14
Fuses:
Please
ensure
the
correct
type
of
fuse
is
fitted,
as
specified
in
this
manual.
PLEASE
NOTE:
the
FM-504
has
2x
2SA
fuses.
15
Speaker
Output:
See
4/3/2
channel
installation
diagrams
in
this
manual
for
correct
speaker
connection.
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