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Setting the Unit

• To adjust the switch, use standard tip screwdriver if needed.

Gain Control

Adjusting the gain controls A and B will help match the output of the car stereo to the Pioneer amplifier. Normally, set the

gain controls to the NORMAL position. If the output is low, even when the volume of the car stereo is turned up, turn these

controls clockwise. If there is distortion when the volume of the car stereo is turned up, turn these controls counter-clockwise.

• If you only use one input plug, set the gain controls for speaker outputs A and B to the same position.

• When using with an RCA equipped car stereo (standard output of 500 mV), set to the NORMAL position. When using with an RCA

equipped Pioneer car stereo with max. output of 4 V or more, adjust level to match the car stereo output level.

Input Select Switch

Input Switch

For two-channel input, slide this switch to the left. For four-

It is possible to input from a car

channel input, slide this switch to the right.

stereo external output (subwoofer

output) or a car stereo speaker

Terminal Cover

output. When using an external

output (subwoofer output), slide

Before setting up the

the switch to the left. For connec-

unit, unfasten the

tion instructions, see the

screws with a 4 mm or

"Connection Diagram" section.

5/32 inch hexagonal

When using a speaker output,

wrench and remove

slide the switch to the right. In

the terminal cover.

this case, it is necessary to use

the supplied speaker input wire

with RCA pin cord. For details,

see the "Using the Speaker

Input" section.

Cut Off Frequency Control

BFC (Beat Frequency Control)

If the LPF/HPF select switch is set to

Switch

LPF or HPF, you can select a cut off

frequency from 40 Hz to 500 Hz.

BFC switch is on the bottom of the

unit. If you hear a beat while listening

Power Indicator

to an AM broadcast with your car

stereo, change the BFC switch using a

The power indicator lights when

small standard tip screwdriver.

the power is switched on.

LPF (Low-Pass Filter)/HPF (High-Pass Filter) Select Switch

Set the LPF/HPF select switch as follows according to the type of speaker that is connected to the speak-

er output connector and the car stereo system:

LPF/HPF Select

Audio frequency range

Speaker

Remarks

Switch

to be output

Type

LPF (Left)

* — 40 Hz to 500 Hz

Subwoofer

Connect a subwoofer.

OFF (Center)

Full range

HPF (Right)

* 40 Hz to 500 Hz —

Full range

Use if you want to cut the very low

frequency range* because it is not

necessary for the speakers you are using.

* See the "Cut Off Frequency Control" section.

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

• Never replace the fuse with one of greater value

body.

or rating than the original fuse. Use of an improp-

er fuse could result in overheating and smoke and

could cause damage to the product and injury

including burns.

CAUTION:

To prevent damage and/or injury

• 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 2 to 8 ohms. But in case of two-channel and

voltage.

other bridge connections, the speaker impedance

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

must be 4 to 8 ohms.

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

• Install and route the separately sold battery wire

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

as far away as possible from the speaker wires.

rest or idling.

Install and route the separately sold battery wire,

• If the system remote control wire of the amplifier

ground wire, speaker wires and the amplifier as

is connected to the power terminal through the

far away as possible from the antenna, antenna

ignition switch (12 V DC), the amplifier will

cable and tuner.

always be on when the ignition is on— regardless

• Cords for this product and those for other prod-

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

ucts may be different colors even if they have the

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

same function. When connecting this product to

rest or idling.

another product, refer to the supplied manuals of

both products and connect cords that have the

same function.

Speaker Channel

Speaker Type

Power

Subwoofer

Nominal input: Min. 70 W

Four-channel

Other than subwoofer

Max. input: Min. 150 W

Subwoofer

Nominal input: Min. 200 W

Two-channel

Other than subwoofer

Max. input: Min. 600 W

Three-channel

Subwoofer

Nominal input: Min. 70 W

Speaker output A

Other than subwoofer

Max. input: Min. 150 W

Three-channel

Subwoofer

Nominal input: Min. 200 W

Speaker output B

Other than subwoofer

Max. input: Min. 600 W

Connection Diagram

• This diagram shows connections using external output (subwoofer output). Slide the input switch to the left.

• When you connect with speaker output, connections defers from the diagram. For details, see the "Using the

Speaker Input" section. In either case, you need to set the input switch. For details, see the "Setting the Unit"

section.

Fuse (30 A)

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)

Grommet

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

Connect to metal body or chassis.

External Output

If only one input plug is used,

do not connect anything to RCA

Car stereo with

input jack B.

RCA output jacks

Connecting wire

with RCA pin plugs

(sold separately).

RCA output jack

RCA input jack B

RCA input jack A

Fuse (30 A) × 2

Speaker output

terminal

See the "Connecting

Amplifier with

the Speakers and Input

RCA input jacks

Wires" section for

RCA input

speaker connection

instructions.

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.

Connecting the Power Terminal

WARNING

• Always use the special red battery and ground

Failure to securely fasten the battery wire to the ter-

wire [RD-223], which is sold separately. Connect

minal using the terminal screws could cause the ter-

the battery wire directly to the car battery positive

minal area to overheat and could result in damage

terminal (+) and the ground wire to the car body.

and injury including minor burns.

1. Pass the battery wire from the

Connecting the Speaker Output

engine compartment to the interior

Terminals

of the vehicle.

• After making all other connections to the

amplifier, connect the battery wire terminal of

1. Expose the end of the speaker wires

the amplifier to the positive (+) terminal of

using nippers or a cutter by about

the battery.

10 mm (3/8 inch) and twist.

Engine

Fuse (30 A)

compart-

Interior of

ment

the vehicle

2. Attach lugs to speaker wire ends.

Lugs not supplied.

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

Fuse (30 A)

Drill a 14 mm

3. Connect the speaker wires to the

Positive terminal

(1/2 inch) hole

speaker output terminals.

Insert the O-ring rubber

into the vehicle

• Fix the speaker wires securely with the termi-

grommet into the vehicle

body.

nal screws.

body.

Terminal screw

2. Twist the battery wire, ground wire

and system remote control wire.

3. Attach lugs to wire ends. Lugs not

Speaker

supplied.

output

terminal

Speaker wire

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

4. Connect the wires to the terminal.

• Fix the wires securely with the terminal

screws.

GND terminal

Power terminal

System remote

control terminal

System remote

control wire

Ground wire

Battery wire