Owner's Manual
Table Of Contents
The
M4300's "+12
VDC"
and
"Ground"
connections are designed to accept 8
AWG
-
4 AWG power wire. 8 AWG is a
minimum
power
wire
size for
this
amplifier.
If
you are installing the M4300 with
other
amplifiers
and
wish to use a single
main
power
wire, use 4 AWG or larger
main
power wire
(depending on the overall
current
demands
of
all
the amplifiers in the system). This 4 AWG or
larger power wire should terminate into a
distribution block
mounted
as close to the
amplifiers as possible
and
should connect to
the
M4300 with 8 AWG - 4 AWG power wire.
Note: Smaller AWG
numbers
mean
bigger wire
and vice-versa
(1/0 AWG
is
the largest, 2
AWG
is
smaller, then 4 AWG,
then
8 AWG, etc.).
To connect the power wires to the amplifier,
first back out the set screw
on
the top
of
the
terminal block, using the supplied 2.5
mm
hex
wrench. Strip 1/2 inch
(12
mm)
of
insulation from
the end
of
each wire
and
insert the bare wire into
the terminal block, seating it firmly so that no
bare wire is exposed. While holding the wire in
place, tighten the set screw firmly, taking care not
to strip the head
of
the screw.
The
ground connection should be made using
the same gauge wire
as
the power connection.
Any wires
run
through
barriers
must
be
protected with a high
quality
rubber
grommet
to prevent
damage
to
the
insulation
of
the
wire.
Failure to
do
so
may
result in a dangerous
short
circuit.
DIMPORTANTI
Many
vessels
employ
small
(10 AWG - 6 AWG)
wire
to
connect
the
alternator's
positive
connection
to
the
battery.
To
prevent
voltage
drops,
this
wire
should
be
upgraded
to
4 A
WG
when
installing
amplifier
systems
with
main
fuse
ratings
above 60A.
-JL
AUDIO
M4300
It
is
common for the alternator to be grounded
through its chassis.
If
the alternator
is
not
grounded through its chassis and instead employs
a small
(10
AWG
- 6
AWG)
wire to connect to
ground, this wire should also be upgraded to 4
AWG when installing amplifier systems with main
fuse ratings above 60A.
FUSE REQUIREMENTS
It
is
absolutely vital that the
main
power
wire(s) to
the
amplifier(s) in the system be
fused within
18
inches
(45
cm)
of
the positive
battery post connection.
The
fuse value at each
power wire should be high enough for all
of
the
equipment being
run
from that power wire.
If
only the A4300
is
being
run
from that power wire,
we
recommend a 40A fuse be used. A
FS
(mini
blade fuse), AGU (big glass fuse) or MaxiFuse'"
(big plastic-body fuse) types are recommended.
No
fuse is required or recommended directly
before the amplifier power connection.
If
one is
desired,
we
recommend the use
of
a 40A fuse.
TURN-ON
LEAD
The
M4300 uses a conventional +
12V
remote
turn-on
lead, typically controlled by the source
unit's remote
turn-on
output.
The
amplifier will
turn
on
when +12V
is
present at its "Remote"
input
and
turn
offwhen +
12V
is
switched off.
If
a source unit does not have a dedicated remote
turn-on
output, the amplifier's
turn-on
lead can
be connected to
+
12V
via a switch that derives
power from
an
ignition-switched circuit.
The
M4300's "Remote"
turn-on
connector
is
designed to accept
18
AWG
-
12
AWG
wire.
To
connect the remote
turn-on
wire to the amplifier,
first back out the set screw on the top
of
the
terminal block, using the supplied 2.5mm hex
wrench. Strip
1/2 inch (12mm)
of
wire
and
insert
the bare wire into the
terminal
block, seating it
firmly so that no bare wire is exposed. While
holding the wire in the terminal, tighten the set
screw firmly, taking care not to strip the head
of
the screw
and
making
sure that the wire (not the
insulation) is firmly gripped by the set screw.
5