Setting the Unit <ENGLISH>
Thank you for purchasing this PIONEER
product. Before attempting operation, be
sure to read this manual.
In case of trouble
When the unit does not operate properly,
contact your dealer or the nearest autho-
rized PIONEER Service Station.
Never replace the fuse with one of greater
value or rating than the original fuse. Use
of an improper fuse could result in over-
heating and smoke and could cause dam-
age to the product and injury including
Do NOT install or use your Pioneer ampli-
fier by wiring speakers rated at 4 Ohm (or
lower) in parallel to achieve a 2 Ohm (or
lower) bridged mode (Diagram B).
Amplifier damage, smoke, and overheating
could result from improper bridging. The
amplifier surface could also become hot to
the touch and minor burns could result.
To properly install or use a bridged mode
for a two-channel amplifier and achieve a 4
Ω load, wire two 8 Ω speakers in parallel
with Left + and Right – (Diagram A) or use
a single 4 Ω speaker. For a four-channel
amplifier, follow the speaker output con-
nection diagram for bridging as shown on
the back of your amplifier, and wire two 8
Ω speakers in parallel to achieve a 4 Ω load
or use a single 4 Ω speaker per channel.
If you have any questions or concerns,
please contact your local authorized
Pioneer dealer or call Pioneer customer
• Always use the special red battery and ground
wire [RD-223], which is sold separately. Connect
the battery wire directly to the car battery positive
terminal (+) and the ground wire to the car body.
• Do not touch the amplifier with wet hands.
Otherwise you may get an electric shock. Also, do
not touch the amplifier when it is wet.
• For traffic safety and to maintain safe driving
conditions, keep the volume low enough so that
you can still hear normal traffic sound.
• Check the connections of the power supply and
speakers if the fuse of the separately sold battery
wire or the amplifier fuse blows. Detect the cause
and solve the problem, then replace the fuse with
another one of the same size and rating.
• To prevent malfunction of the amplifier and
speakers, the protective circuit will cut the power
supply to the amplifier (sound will stop) when an
abnormal condition occurs. In such a case, switch
the power to the system OFF and check the
connection of the power supply and speakers.
Detect the cause and solve the problem.
• Contact the dealer if you cannot detect the cause.
• To prevent an electric shock or short-circuit
during connection and installation, be sure to
disconnect the negative (–) terminal of the battery
• Confirm that no parts are behind the panel when
drilling a hole for installation of the amplifier. Be
sure to protect all cables and important equipment
such as fuel lines, brake lines and the electrical
wiring from damage.
• DO NOT allow amplifier to come into contact
with liquids due to, for example, the location
where the amplifier is installed. Electrical shock
could result. Also, amplifier and speaker damage,
smoke, and overheating could result from contact
with liquids. In addition, the amplifier surface and
the surface of any attached speakers could become
hot to the touch and minor burns could result.
Before Using This Product <ENGLISH>
Published by Pioneer Corporation.
Copyright © 2006 by Pioneer Corporation.
All rights reserved.
Publicado por Pioneer Corporation.
Copyright © 2006 Pioneer Corporation.
Todos los derechos reservados.
Printed in China
Impreso na China
<YRD5128-A/U> ES<KSNNX> <06K00000>
AMPLIFICADOR DE POTENCIA DE
CUATRO CANALES EN PUENTE
Manual del Propietario
4-1, MEGURO 1-CHOME, MEGURO-KU, TOKYO 153-8654, JAPAN
PIONEER ELECTRONICS (USA) INC.
P.O. Box 1540, Long Beach, California 90801-1540, U.S.A.
TEL: (800) 421-1404
PIONEER EUROPE NV
Haven 1087, Keetberglaan 1, B-9120 Melsele, Belgium
TEL: (0) 3/570.05.11
PIONEER ELECTRONICS ASIACENTRE PTE. LTD.
253 Alexandra Road, #04-01, Singapore 159936
PIONEER ELECTRONICS AUSTRALIA PTY. LTD.
178-184 Boundary Road, Braeside, Victoria 3195, Australia
TEL: (03) 9586-6300
PIONEER ELECTRONICS OF CANADA, INC.
300 Allstate Parkway, Markham, Ontario L3R OP2, Canada
PIONEER ELECTRONICS DE MEXICO, S.A. de C.V.
Blvd.Manuel Avila Camacho 138 10 piso
Col.Lomas de Chapultepec, Mexico, D.F. 11000
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 dis-
tortion 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.
The power indicator lights when the
power is switched on.
Input Select Switch
For two-channel input, slide this switch
to the left. For four-channel input, slide
this switch to the right.
Cut Off Frequency Control
If the LPF/HPF select switch is set to
LPF or HPF, you can select a cut off
frequency from 40 Hz to 500 Hz.
BFC (Beat Frequency Control)
BFC switch is on the bottom of the unit.
If you hear a beat while listening to an
AM broadcast with your car stereo,
change the BFC switch using a small
standard tip screwdriver.
Before setting up the unit, unfasten the
screws with a 4 mm hexagonal wrench
and remove the terminal cover.
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 speaker 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 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
* See the “Cut Off Frequency Control” section.
It is possible to input from a car stereo
external output (subwoofer output) or a
car stereo speaker output. When using
an external output (subwoofer output),
slide the switch to the left. For connec-
tion instructions, see the “Connection
Diagram” section. When using a speak-
er output, slide the switch to the right.
In 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.
• To adjust the switch, use standard tip screwdriver if needed.
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