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Setting the Unit
<ENGLISH>
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 (not supplied)
slide the switch to the right. In
and remove the termi-
this case, it is necessary to use
nal cover.
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 120 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 the power
small standard tip screwdriver.
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 120 Hz
Subwoofer
Connect a subwoofer.
OFF (Center)
Full range
Full range
HPF (Right)
* 40 Hz to 120 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 Installation
manuals of both products and connect cords that
have the same function.
Speaker Channel
Speaker Type
Power
Subwoofer
Nominal input: Min. 75 W
Four-channel
Other than subwoofer
Max. input: Min. 150 W
Subwoofer
Nominal input: Min. 300 W
Two-channel
Other than subwoofer
Max. input: Min. 600 W
Three-channel
Subwoofer
Nominal input: Min. 75 W
Speaker output A
Other than subwoofer
Max. input: Min. 150 W
Three-channel
Subwoofer
Nominal input: Min. 300 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.
Grommet
Fuse (30 A)
Ground wire (Black) [RD-223] (sold separately)
Connect to metal body or chassis.
External Output
If only one input plug is used, do
Car stereo with
not connect anything to RCA
RCA output jacks
input jack B.
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
Amplifier with
See the "Connecting the
Speakers and Input
RCA input jacks
RCA input
Wires" section for
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.
<ENGLISH>
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
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