Cables
• Whenever possible, route power wire and signal wire
on
opposite sides of the
vehicle. This prevents the signal cables from picking up electrically radiated noise.
• Protect
all
wire from damage. Where a power wire passes through the fire wall or
near exposed metal edges, protect the wire with a rubber or plastic grommet. Use
wire loom where possible for further protection.
• Extra cable can cause signal loss and act as
an
antenna for noise. Use only high-
quality RCA cables that are no longer than necessary to make a direct connection
with the source unit and amplifiers.
• Make sure each connection
is
clean and secure. Insulate final connections with
electrical tape or shrink tubing.
CAUTION
External fuse rating table
Model Fuse rating
APX2180 30 Amp
APX4360 50 Amp
DPX2250 60 Amp
DPX1800 90 Amp
DPX11500*
200 Amp
*This amplifier has no amplifier-
mounted fuses. Always use a 200
Amp fuse installed at the battery.
Grounding the amplifier
• A good chassis ground connection
is
critical
to minimize resistance and avoid noise
problems.
Use the shortest wire possible. Clean off any
paint, primer or sound deading prior
to
making this connection.
To
minimize resistance and avoid noise
problems, securely connect the ground wire
to the car chassis and the source unit ground. Using existing bolts
is
not recom-
mended.
• The last connection
you
make should
be
the ground wire at the amplifier.
As
the
power supply capacitors
in
the amplifier are not charged, a spark may
be
pro-
duced when you make this connection.
Use a test light with
an
incandescent bulb between the ground terminal and the
power wire
to
charge these capacitors if this
is
a concern. The ground wire
is
the
most important connection to the amplifier. Make sure
it
is
both electrically and
mechanically sound.
Improper connections
may
result in
unreliable operation
and
damage the
amplifier
or
the vehicle.
12
APX/DPX Amplifiers
Cables
• Whenever possible, route power wire and signal wire
on
opposite sides of the
vehicle. This prevents the signal cables from picking up electrically radiated noise.
• Protect
all
wire from damage. Where a power wire passes through the fire wall or
near exposed metal edges, protect the wire with a rubber or plastic grommet. Use
wire loom where possible for further protection.
• Extra cable can cause signal loss and act as
an
antenna for noise. Use only high-
quality RCA cables that are no longer than necessary to make a direct connection
with the source unit and amplifiers.
• Make sure each connection
is
clean and secure. Insulate final connections with
electrical tape or shrink tubing.
CAUTION
External fuse rating table
Model Fuse rating
APX2180 30 Amp
APX4360 50 Amp
DPX2250 60 Amp
DPX1800 90 Amp
DPX11500*
200 Amp
*This amplifier has no amplifier-
mounted fuses. Always use a 200
Amp fuse installed at the battery.
Grounding the amplifier
• A good chassis ground connection
is
critical
to minimize resistance and avoid noise
problems.
Use the shortest wire possible. Clean off any
paint, primer or sound deading prior
to
making this connection.
To
minimize resistance and avoid noise
problems, securely connect the ground wire
to the car chassis and the source unit ground. Using existing bolts
is
not recom-
mended.
• The last connection
you
make should
be
the ground wire at the amplifier.
As
the
power supply capacitors
in
the amplifier are not charged, a spark may
be
pro-
duced when you make this connection.
Use a test light with
an
incandescent bulb between the ground terminal and the
power wire
to
charge these capacitors if this
is
a concern. The ground wire
is
the
most important connection to the amplifier. Make sure
it
is
both electrically and
mechanically sound.
Improper connections
may
result in
unreliable operation
and
damage the
amplifier
or
the vehicle.
12
APX/DPX Amplifiers
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