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2
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ˆ
Features
Your RadioShack High Power 4/3/2-Channel Bridgeable Amplifier produces a total of
400 watts to give added punch and power to
your vehicle’s existing auto sound system.
The amplifier produces up to 200 watts per
channel (if bridged) of clean, powerful sound
at all audio frequencies with minimum distortion. You can connect your auto sound system’s low-level or speaker-level outputs to
this amplifier.
(preamplifier) signal inputs to match your
auto sound system’s output for the best highfidelity performance.
14K Gold-Plated Speaker Terminals
signed for low impedance, high conductivity,
and minimum corrosion, to provide the highest signal transfer and lowest sound distortion.
Input Level Controls
level of the audio signals that enter the amplifier.
Automatic Power Switching
matically turn the amplifier on or off when
you turn your auto sound system on or off
(depending on how you hook up the amplifier).
Bridging Capability
amplifier’s four 100-watt channels so you can
use the amplifier with only two channels that
produce a total of 200 watts from each channel.
Mute Turn On Circuit
thump you hear when you turn on some amplifiers.
— let you connect low-level
— de-
— let you adjust the
— can auto-
— lets you combine the
— eliminates the
Power Indicator
supplied to the amplifier.
Protection Indicator
shuts itself down.
Crossover Frequency Circuit
adjust the crossover frequency from 45–400
Hz. This lets you set up the amplifier so you
can connect a subwoofer.
Short Circuit Protection
plifier’s sound if any output channel shorts,
alerting you to turn off the auto sound system.
Auto-Off
plifier to protect the amplifier from overheating or input overloads. The amplifier restarts
automatically when it cools or the problem is
corrected.
— temporarily shuts down the am-
— lights when power is
— lights if the amplifier
— lets you
— distorts the am-
THE FCC WANTS YOU TO
KNOW
Your amplifier might cause TV or radio interference even when it is operating properly.
To determine whether your amplifier is causing the interference, turn off your amplifier. If
the interference goes away, your amplifier is
causing it. Try to eliminate the interference
by:
• moving your amplifier away from the
receiver
• contacting your local RadioShack store
for help
If you cannot eliminate the interference, the
FCC requires that you stop using your amplifier.
Features
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ˆ
Preparation
SUPPLIED HARDWARE
Your amplifier comes with the following items. Be sure you locate everything shown before you
store or dispose of the packing materials.
Power Wire (Red) (1)
Ground Wire (Black) (1)
Remote Wire (Blue/White) (1)
4-Pin Connector with Wire (2)
Sheet Metal Screws (4)
BEFORE YOU BEGIN THE
INSTALLATION
Before you install your amplifier, read all the
instructions in this owner’s manual. You
should be able to answer all of the se questions about your vehicle’s electrical and auto
sound systems.
• Does my vehicle have an auto sound
system, such as a car stereo or CD
player, already installed? (You must
have an existing auto sound system to
use this amplifier.)
• How do I connect a wire to the fuse box?
• Which of the auto sound system’s wires
is the power wire?
• Which of the auto sound system’s terminals are low-level outputs and which are
high-level (speaker) outputs?
Flat Washers (4)
Lock Washers (4)
Also, be aware that installation in your vehicle might require cutting or modifying your
vehicle.
Twist-On
Terminal
Connectors (9)
Choosing a Mounting Location
A good location for mounting the amplifier is
in your vehicle’s trunk. Wherever you decide
to mount it, choose a mounting location that:
• Does not interfere with the vehicle’s
operation
• Lets you drill mounting holes without
damaging other vehicle component s
• Allows enough space around the cooling
fins for proper airflow and cooling
• Lets you easily see the amplifier’s
POWER and PROTECTION indicators
4
Preparation
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Warning:
is on. Do not touch the amplifier or place
flammable objects near it.
The amplifier gets very hot while it
Preparing the Mounting Area
Before you mount the amplifier, make sure
you have these materials.
• an adapter harness
• additional wire
• shielded audio cables
• 16- or 18-gauge marked or color-coded
wires
Then confirm that the amplifier fits in your vehicle’s available mounting area. This amp lifier requires a 5
wide by 171/2-inch deep (13.9 × 34.3 × 43.1
cm) mounting area with adequate ventilation
space.
1
/2-inch high by 131/2-inch
Routing Cables and Wires
Avoid routing the connection cables and any
speaker wires near moving parts or sharp
edges. You can usually route wires and cables along the wiring channel beneath the
vehicle’s door facings by carefully removing
the molding that holds the carpet in place. After routing the cables and wires, replace the
molding.
INSTALLATION ORDER
For trouble-free installation, simply follow the
sections in this owner’s manual in order. First
make all the connections by temporarily connecting the amplifier to:
1
Ground and power
Then test the connections. When you verify
that everything works as expected, disconnect the amplifier, mount it in your vehicle,
and reconnect it.
Caution:
in the order shown, damage to the amplifier
and your auto sound system is possible if
any wire connections are made incorrectly.
Note:
you plan to connect with the name of the terminal you will connect it to.
If you do not make the connections
For easier installation, mark each wire
BEFORE YOU MAKE THE
CONNECTIONS
The supplied connection cables include all
the lead wires you need to connect the amplifier to ground, power, and your existing
auto sound system.
Important:
• Do not cut these wires. If you cut any
wire, you cannot obtain a refund or
exchange on this product. However,
will
RadioShack
vice if you cut a wire and find the product is defective.
• If the connectors on your vehicle’s auto
sound system are not compatible with
the amplifier’s connectors, you might
need an adapter harness to complete
the connections. RadioShack stores sell
adapter harnesses for most vehicles.
You might need additional wire, depending
on your individual auto sound system, to
complete the connections. Your local RadioShack store carries a full line of wire and
wire management accessories.
provide warranty ser-
2
Your auto sound system’s outputs
3
Your speakers
Preparation
5
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Cautions:
100 watts per channel if you connect
your auto sound system to two pairs of
• For added safety and to protect your
amplifier and auto sound system, disconnect the cable from your vehicle’s
–
negative (
) battery terminal before you
begin.
• Be sure your speakers can handle as
much as 400 watts of power (200 watts
per channel if you connect your auto
sound system to one pair of speakers
speakers or one pair of speakers and a
subwoofer). Each speaker must have an
impedance of at least 4 ohms. Y our local
RadioShack store carries a full line of
speakers.
To make it easier to gauge wire length and
connect the amplifier, temporarily place the
amplifier as close as possible to the selected
mounting location.
and bridge the amplifier’s outputs, or
CONNECTING GROUND AND SWITCHED/PRIMARY POWER
Fuse
Red
Black
Holder
Blue/White
Chassis
Ground
Vehicle’s Battery
Auto Sound System
Follow these steps to connect the amplifier to
ground, switched power, and primary power.
1. If you have not done so already, disconnect the cable from your vehicle’s negative (–) battery terminal.
2. Use a screwdriver to connect the spade
end of the supplied black ground wire to
GND
the amplifier’s
(ground) terminal.
3. Connect the black ground wire’s other
end to a chassis ground, such as a
metal bolt attached to a metal part of the
vehicle’s frame. Be sure the bolt is not
6
Preparation
Switched Power Lead
insulated from the chassis by a plastic
part.
4. Use a screwdriver to connect the spade
end of the supplied blue/white wire to
REM
the amplifier’s
(remote power) ter-
minal.
If your auto sound system has a
5.
switched power lead
, connect the blue/
white wire’s other end to your auto
sound system’s switched power lead
using one of the supplied twist-on terminal connectors.
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This connection turns on the amplifier
when you turn on the auto sound system, and turns off the amplifier when
you turn off the auto sound system. This
prevents your vehicle’s battery from
being drained if you leave your amplifier
on when you turn off your auto sound
system.
If your auto sound system does not have
a switched power lead
, connect the
blue/white wire’s other end to a point in
your vehicle’s fuse block that has power
only when you turn on the ignition or turn
the key to ACC.
This connection turns on the amplifier
when you turn on the ignition or turn the
key to ACC, and turns off the amplifier
when you turn off the ignition. This prevents your vehicle’s battery from being
drained if you leave your amplifier on
when you turn off the ignition.
6. Use a screwdriver to connect the spade
end of the supplied red power cable
(with in-line fuse holder) to the ampli-
+ 12V
fier’s
terminal.
7. Connect the other end of the red power
cable to your vehicle’s positive (+) battery terminal. Then tighten the terminal.
Caution:
Due to the amplifier’s high current requirement, you must connect the
red power cable’s fused end directly to
the vehicle’s positive (+) battery terminal
or damage to your vehicle’s wiring could
result.
Do not reconnect your vehicle’s negative (–)
battery cable yet.
Preparation
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ˆ
Connecting Inputs
LOW-LEVEL INPUTS
You can connect your auto sound system’s
low-level line out jacks to the amplifier’s lowlevel line in jacks.
If your auto sound system does not have
low-level line out jacks, see “High-Level
If your auto sound system has four separate line out jacks
2.
to the amplifier.
(Speaker Wire) Inputs” on Page 9 to connect
your amplifier.
Note:
dio cables (not supplied) available at your local RadioShack store.
1. Temporarily place the amplifier as close
CH 3
CH 4
For the best results, use shielded au-
as possible to the selected mounting
location.
, connect the auto sound system
CH 2
CH 1
Right Rear
Auto Sound System
Left Rear
8
Connecting Inputs
Right Front
Left Front
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