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1
Features
specifications
All power supplies are quasi-regulated.
Protection circuits include short-circuit, thermal
and
reverse polarity.
1
@
All
muting circuits are optically isolated from the audio circuits.
1
a
High
speed
(35
nano-second) diodes are used for the
main
rectifiers.
r
bass response.
r
F3SFETs in all output stages.
Increase noise immunity.
7
into
4
Ohms
-
3U
WXL
Bridge
Mono Power
into
4
Ohm!
Minimum
Speaker
Impedance
2 Ohm Stereo / 4
Ohm
Mono Bridged
Crossovers: Low Pass
.-----------
50Hz
-
250H
Fuse
Rating
20A
-2.5~
30)
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Installation
Wind
a
suit;~b.le
Iocatiozn
in
the ~ebicle to mount
the
mp1ifier.
P
~s~e
sun
is nacien[
air
flow
mund-e
inten&,
mounting location.
3
Att3sch
the
amplifier to
the
mounting surface using
wrews.
4
Connect
tb
power
ground
termbad
to
the
nearest
mm
the
cfras~is
af
tht:
ear.
Keep
this
gourd
wire
less
than
me
meter
(38"3
in
l@n@h.
Use
8
gauge
wire
m
larger.
.
85
Comtxt the
terminal to the remote
oupt
of
thk head u&
using
16
gauge
wire.
Cmect
m
empty
fuse
holder within
457
~un
(18")
of-the
barn
an$
run 8 gauge or larger high quality cable from
this
fuse
to tk
amplifier
1~cation.
Y
Make sure
there
is
no fuse
tin
this
fuse
hick.
Then
m&
the
connectian to the
"BATT"
comectim
on
the
amplifir.
If
mlrtltiple mplifiw$
are
being
uwd,
either
run
sep& cables
(each with
it$ own
fuse
at
the
battery)
or a
9
0
tx
#
2
cable
fmm
the
fuse
balder
at
the
battery
to a distribution block
at
~r
mar
the
mplifier's location.
S
Connect
dl
line inputs and outputs using high-quality
RCA
cab%
"1
Insert fusets) at the battery fuse holder(s).
I
1
Recheck all connections before powering
up.
I
Ih
Set
all
level controls
to
their bast sensitive pitions
and
set a11
crossover controls switck, etc. to
the
desired
fbxpmcy
or
position.
1
3
Once the system is powered up, set
the
volume control on the
head unit
to
abut
3/4
volume 2 o'clock position, and then set
all
the amplifiers' level controls to just below level of distortion for
maximum output level.
1
Fuse
R
A
I
4
Further
fine
tuning of the various controls may
be
necessary to
obtain the desired results.
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Page 9
+7.
--&J*
Rifs
in
~~BcA~untothe
-
-
speakers.
amplifier(s) - if hiss disappears, then
plug
in
the
component driving the
k6Mer
and
u&lw
its
in~u6.
If
High
squeal
aolse
from
speakers.
his;
disappears,
&
&
untiltilthe
fadtylncrisy
component is
found.
It is best to
set:
the amplifier's
input
level
as
insensitive as poaible.
The
best subjective
SIN
ratio is
obtainable this way.
By
to
drfve
as
hqh
a
signal
levef
from
the head
wxut
as
passible.
This
is almost
always
caused
by
a
poorly-grounded
RCA
interconnect.
:iqq
u'
-
Distorted
Checlc
that the Level
cmtr~&s)
i~
--nd
to match
the-
\?
have
been
pfop
'-
eck for short
er lea&.
puwrl
est qua1
r
noise
Check that the speaker leads are not
(alternator
shorted
to
the hicle chassis.
r
whine)
Check that the head unit is
correctly
yunded.
Notes
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