FLI LOADED 450s - Crossover and Bass Controls; Setup Procedure

G
.
B
ass Remote In
p
ut Jac
k
U
se to plu
g
in the optional remote bass controller.
H.
Op
tional Bass Remote
C
ontroller
This remote can be mounted in the
f
ront o
f
the car and will
g
ive
y
ou the abilit
y
to raise the bass boost o
f
the ampli
f
ier
r
emotel
y
in the ran
g
e o
f
0 to +12 dB.
The
y
can be purchased separatel
y
f
rom the FLI website www.
f
liaudio.co.uk, see back pa
g
e
f
or more details.
I.
Sp
eaker Terminal
O
ut
p
ut
For connection to the speakers.
S
ee application section
f
or wirin
g
examples.
J
.
Fu
s
e
Please ensure the followin
g
fuse ratin
g
is used when replacin
g
fuses
:
FLI Loaded 450s – 20 amp
K.Power
C
onne
c
tion
s
Power connections.
S
ee
C
onnections section
f
or details on correct connections.
S
et U
p
S
ectio
n
To correctl
y
set the
g
ain control o
f
the ampli
f
ier to match that o
f
the source
(
headunit
)
use the
f
ollowin
g
setup routine
:
Turn the
g
ain control to minimum on the amplifier.
Ensure the bass boost is set to
0
dB.
O
n the headuni
t
se
t
a
ll
c
r
osso
v
e
r
s
t
o
f
l
a
t
a
n
d
bo
th
bass
a
n
d
tr
eb
l
e
t
o
z
e
r
o
.
Turn up the source
(
headunit
)
to approx 3
/
4 volume.
Ver
y
slowl
y
turn up the
g
ain on the ampli
f
ier until distortion can be heard in an
y
o
f
the speakers or until the volume reaches
an uncomfortable listenin
g
level when this is
reached turn down the
g
ain control sli
g
htl
y.
The
g
ain control is now set.
The settin
g
o
f
the crossover will depend on what kind o
f
speaker
y
ou are installin
g
.
For a subwoo
f
er it is recommended that the crossover is set to Low Pass and the
f
requenc
y
is set to match that o
f
th
e
s
peakers speci
f
ications.
For a pair o
f
f
ull ran
g
e speakers it is recommend that the crossover is set to Flat. The two
f
requenc
y
controls will then hav
e
n
o effect on the amplifiers output and the speaker will receive a full ran
g
e si
g
nal.
For a pair o
f
speakers with a passive crossover it is
recommended that the crossover is set to Hi
g
h Pass and the frequenc
y
is set to match that of the speakers specifications.
Note
:
B
y
usin
g
the crossovers correctl
y
y
ou will not onl
y
len
g
then the li
f
e o
f
y
our speakers but will also
g
et better per
f
ormance
f
ro
m
them. To optimise
y
our setup seek the advise
o
f
a pro
f
essional installation en
g
ineer or visit
y
our local FLI audio dealer.
D
.
C
ro
ss
O
v
er
S
e
l
e
c
t
S
w
it
c
h
U
sed to select between Flat, Hi
g
h Pass Filter and Low Pass Filter.
The hi
g
h pass
f
ilter will onl
y
allow hi
g
h
f
requenc
y
in
f
ormation to be passed to the speaker
(
s
)
while the low pass
f
ilter will
o
n
l
y
allow low
f
requenc
y
in
f
ormation to be sent.
I
f
no
f
ilter needs to be applied then place the switch in the
f
lat position.
E
.C
ross
O
ver Frequenc
y
C
ontro
l
H
i
g
h pass
f
requenc
y
control. The
f
requenc
y
ran
g
es
f
rom 50hz to 500 Hz.
F.
B
a
ss
Boo
s
t
C
ontro
l
To provide up to an extra +12 dB o
f
bass boost at 45 Hz. Use this boost to increase bass output
f
rom the ampli
f
ier.
L. Power Protect Li
g
ht
When the amplifier is operatin
g
correctl
y
the li
g
ht will illuminate constant ‘
g
reen’. When the amplifier is in power protecttio
n
mode the li
g
ht will illuminate
‘
red’.
5