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Connecting the Unit

CAUTION

• Disconnect the negative (–) terminal of the battery

• Make sure that wires will not interfere with mov-

to avoid the risk of short-circuit and damage to

ing parts of the vehicle, such as the gearshift,

the unit.

handbrake or seat sliding mechanism.

• Secure the wiring with cable clamps or adhesive

• Do not shorten any wires. Otherwise the protec-

tape. To protect the wiring, wrap adhesive tape

tion circuit may fail to work when it should.

around it where they lie against metal parts.

• Never feed power to other equipment by cutting

• Do not route wires where they will get hot, for

the insulation of the power supply wire to tap

example where the heater will blow over them. If

from the wire. The current capacity of the wire

the insulation heats up, it may become damaged,

will be exceeded, causing overheating.

resulting in a short-circuit through the vehicle

body.

To prevent damage

• Do not ground the speaker wire directly or con-

• Speakers to be connected to the amplifier should

nect a negative (–) lead wire for several speakers.

conform with the standards listed below. If they

• This unit is for vehicles with a 12-volt battery and

do not conform, they may catch fire, emit smoke

negative grounding. Before installing it in a recre-

or become damaged. The speaker impedance must

ational vehicle, truck or bus, check the battery

be 4 to 8 ohms. Subwoofer impedance must be

voltage.

from 2 to 8 ohms.

• If the car stereo is kept on for a long time while

• Install and route the separately sold battery wire

the engine is at rest or idling, the battery may go

as far away as possible from the speaker wires.

dead. Turn the car stereo off when the engine is at

Install and route the separately sold battery wire,

rest or idling.

ground wire, speaker wires and the amplifier as

• If the system remote control wire of the amplifier

far away as possible from the antenna, antenna

is connected to the power terminal through the

cable and tuner.

ignition switch (12 V DC), the amplifier will

• Cords for this product and those for other prod-

always be on when the ignition is on— regardless

ucts may be different colors even if they have the

of whether the car stereo is on or off. Because of

same function. When connecting this product to

this, the battery could go dead if the engine is at

another product, refer to the supplied manuals of

rest or idling.

both products and connect cords that have the

same function.

Speaker Channel

Speaker Type

Power

Channel A (CH A)

Other than subwoofer

Max. input: Min. 100 W

Channel B (CH B)

Other than subwoofer

Max. input: Min. 100 W

Channel subwoofer

Subwoofer

Nominal input:

Min. 175 W (4 Ω Drive)

(CH SUB)

Min. 330 W (2 Ω Drive)

Connection Diagram

Ground wire (Black) [RD-223] (sold separately)

Connect to metal body or chassis.

Fuse (30 A) × 2

Special red battery wire [RD-223] (sold separately)

After making all other connections at the amplifier,

connect the battery wire terminal of the amplifier to

the positive (+) terminal of the battery.

Fuse (30 A) × 2

Speaker output terminal

Grommet

See the "Connecting the Speaker

wires" section for speaker connection

instructions.

RCA input jack A

RCA input jack B

Fuse (25 A) × 3

RCA input jack SUB

System remote control wire (sold separately)

Connect the male terminal of this wire to the system remote control

terminal of the car stereo (SYSTEM REMOTE CONTROL). The female

terminal can be connected to the auto-antenna relay control terminal. If

the car stereo does not have a system remote control terminal, connect the

male terminal to the power terminal through the ignition switch.

External Output

(Subwoofer output)

Car stereo with

RCA output jacks

Connecting wires with RCA pin

External Output

plugs (sold separately).

(Front and Rear output)

Connecting the Power Terminal

3. Attach lugs to wire ends. Lugs not

supplied.

• Always use the special red battery and ground

• Use pliers, etc., to crimp lugs to wires.

wires ([RD-223] × 2), which are sold separately.

Connect the battery wire directly to the car battery

Lug

positive terminal (+) and the ground wire to the

car body.

1. Pass the battery wire from the

engine compartment to the interior

Lug

of the vehicle.

• After making all other connections to the

Battery wire

amplifier, connect the battery wire terminal of

the amplifier to the positive (+) terminal of

the battery.

Engine

4. Connect the wires to the terminal.

Fuse (30 A)

compart-

Interior of

ment

the vehicle

• Fix the wires securely with the terminal

screws.

GND terminal

System remote

Fuse (30 A)

Drill a 14 mm

control terminal

Positive terminal

hole into the

vehicle body.

Insert the O-ring rubber

System remote

grommet into the vehicle

control wire

body.

Ground wire

2. Twist the battery wire, ground wire

and system remote control wire.

Twist

Battery wire

Connecting the Speaker Output

3. Connect the speaker wires to the

Terminals

1. Expose the end of the speaker wires

Terminal screw

using nippers or a cutter by about

10 mm and twist.

Ground wire

Twist

10 mm

2. Attach lugs to speaker wire ends.

Lugs not supplied.

• Use pliers, etc., to crimp lugs to wires.

Lug

Power terminal

Speaker wire

Speaker

output

terminal

speaker output terminals.

• Fix the speaker wires securely with the termi-

nal screws.

Speaker

output

terminal

Speaker wire

Terminal screw

Speaker wire