Pioneer GM-X944 User Manual [es, en]

Setting the Unit
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.
Cut Off Frequency Control
Combining LPF/HPF/BPF and LOW/HIGH select switch settings lets you select between cut off frequencies from 40 to 120 Hz and 3k to 9k Hz. (Example: LPF and HIGH)
Power Indicator
The power indicator lights when the power is switched on.
BFC (Beat Frequency Control) Switch
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.
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 autho­rized PIONEER Service Station.
WARNING
• Always use the special red battery and ground wires ([RD-223] ×2), which are 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 beforehand.
• 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.
Before Using This Product
RCA Input Select Switch
For two-channel input, slide this switch to the left. For four-channel input, slide this switch to the right.
PIONEER CORPORATION
4-1, MEGURO 1-CHOME, MEGURO-KU, TOKYO 153-8654, JAPAN
PIONEER ELECTRONICS (USA) INC.
P.O. Box 1760, Long Beach, California 90801, U.S.A. TEL: (800) 421-1404
PIONEER ELECTRONIC (EUROPE) N.V.
Haven 1087 Keetberglaan 1, 9120 Melsele, Belgium TEL: (0) 3/570.05.11
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 0P2, Canada TEL: (905) 479-4411
PIONEER ELECTRONICS DE MEXICO, S.A. de C.V.
San Lorenzo Num 1009 3er piso Desp. 302 Col. Del Valle, Mexico D.F. C.P. 03100 TEL: 5-688-52-90
Published by Pioneer Corporation. Copyright © 2000 by Pioneer Corporation. All rights reserved.
Publicado por Pioneer Corporation. Copyright © 2000 Pioneer Corporation. Todos los derechos reservados.
Printed in U.S.A. Impreso en los EE.UU.
<HRD0140-A> ES<00B00F0R01>
BRIDGEABLE FOUR-CHANNEL POWER AMPLIFIER
AMPLIFICADOR DE POTENCIA DE CUATRO CANALES EN PUENTE
Owner’s Manual
GM-X944
Manual del Propietario
LPF (Low-Pass Filter)/HPF (High-Pass Filter)/BPF (Band-Pass Filter) and LOW/HIGH Select Switch
Set the LPF/HPF/BPF and LOW/HIGH 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/BPF Audio frequency range Speaker Remarks
and LOW/HIGH to be output Type Select Switch
LPF HIGH *1— 3k to 9k Hz Mid Connect a mid range speaker.
LOW *1— 40 to 120 Hz Subwoofer Connect a subwoofer.
HPF HIGH *1*23k to 9k Hz — Tweeter*
3
Connect a tweeter.
LOW *140 to 120 Hz — Full range Use if you want to cut the
very low frequency range*
1
because it is not necessary for the speakers you are using.
BPF (for CH A)*
4
*140 to 120 Hz — Mid Connect a mid range speaker. — 3k to 9k Hz
OFF Full range Full range
*1See the “Cut Off Frequency Control” section. *2With CH A, even if the setting is HPF-HIGH, you can only select the same cut off frequency as
with HPF-LOW (40 to 120 Hz). *3If you connect the tweeter directly, you must set the CH B to HPF-HIGH. *4Be sure to set the LOW/HIGH select switch to HIGH.
Level
(dB)
0
–3
(3 kHz) (9 kHz)
Frequency
(Hz)
Connecting the Power Terminal
• Always use the special red battery and ground wires ([RD-223] ×2), which are sold separately. Connect the battery wire directly to the car battery positive terminal (+) and the ground wire to the car body.
1. Pass the battery wire from the
engine compartment to the interior of the vehicle.
• After making all other connections to the amplifier, connect the battery wire terminal of the amplifier to the positive (+) terminal of the battery.
2. Twist the battery wire, ground wire and system remote control wire.
3. Attach lugs to wire ends. Lugs not supplied.
• Use pliers, etc., to crimp lugs to wires.
4. Connect the wires to the terminal.
• Fix the wires securely with the terminal screws.
Fuse (30 A)
Engine compart­ment
Interior of the vehicle
Drill a 14 mm hole into the vehicle body.
Insert the O-ring rubber grommet into the vehicle body.
Twist
Positive terminal
GND terminal
Power terminal
Battery wire
System remote control terminal
System remote control wire
Ground wire
Fuse (30 A)
Battery wire
Ground wire
Lug
Lug
Connecting the Unit
CAUTION
• Disconnect the negative (–) terminal of the battery to avoid the risk of short-circuit and damage to the unit.
• Secure the wiring with cable clamps or adhesive tape. To protect the wiring, wrap adhesive tape around it where they lie against metal parts.
• Do not route wires where they will get hot, for example where the heater will blow over them. If the insulation heats up, it may become damaged, resulting in a short-circuit through the vehicle body.
• Make sure that wires will not interfere with mov­ing parts of the vehicle, such as the gearshift, handbrake or seat sliding mechanism.
• Do not shorten any wires. Otherwise the protec­tion circuit may fail to work when it should.
• Never feed power to other equipment by cutting the insulation of the power supply wire to tap from the wire. The current capacity of the wire will be exceeded, causing overheating.
Speaker Channel Speaker Type Power
Four-channel
Subwoofer Nominal input: Min. 95 W Other than subwoofer Max. input: Min. 150 W
Two-channel
Subwoofer Nominal input: Min. 330 W
Other than subwoofer Max. input: Min. 500 W Three-channel Subwoofer Nominal input: Min. 95 W Speaker output A Other than subwoofer Max. input: Min. 150 W Three-channel Subwoofer Nominal input: Min. 330 W Speaker output B Other than subwoofer Max. input: Min. 500 W
Connection Diagram
Fuse (30 A) ×2
Grommet
RCA input
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.
Ground wire (black) [RD-223] (sold separately). Connect to metal body or chassis.
Amplifier with RCA input jacks
Fuse (30 A) × 3
Car stereo with
RCA output jacks External Output For details on how to connect to RCA input jacks A and B, see the “Connecting the Speakers and Input wires” section.
Connecting wires with RCA pin plugs (sold separately).
RCA input jack B
RCA output jack
Speaker output terminal See the “Connecting the Speakers and 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.
Fuse (30 A) ×2
Front side
Connecting wires with RCA pin plugs (sold separately).
RCA input jack A
Back side
Connecting the Speaker Output Terminals
1. Expose the end of the speaker wires by about 10 mm and twist using nippers or a cutter.
2. Attach lugs to speaker wire ends. Lugs not supplied.
• Use pliers, etc., to crimp lugs to wires.
3. Connect the speaker wires to the speaker output terminals.
• Connect the speaker wires, passing them
through the terminal cover.
• Fix the speaker wires securely with the termi-
nal screws.
4. Push on the terminal cover.
10 mm
Twist
Speaker output terminal
Terminal cover
Terminal screw
Speaker wire
Lug
Speaker wire
To prevent damage
• Do not ground the speaker wire directly or con­nect a negative (–) lead wire for several speakers.
• This unit is for vehicles with a 12-volt battery and negative grounding. Before installing it in a recre­ational vehicle, truck or bus, check the battery voltage.
• If the car stereo is kept on for a long time while the engine is at rest or idling, the battery may go dead. Turn the car stereo off when the engine is at rest or idling.
• If the system remote control wire of the amplifier is connected to the power terminal through the ignition switch (12 V DC), the amplifier will always be on when the ignition is on— regardless of whether the car stereo is on or off. Because of this, the battery could go dead if the engine is at rest or idle.
• Speakers to be connected to the amplifier should conform with the standards listed below. If they do not conform, they may catch fire, emit smoke or become damaged. The speaker impedance must be 1 to 8 ohms. But in case of two-channel and other bridge connections, the speaker impedance must be 2 to 8 ohms.
• Install and route the separately sold battery wire as far away as possible from the speaker wires. Install and route the separately sold battery wire, ground wire, speaker wires and the amplifier as far away as possible from the antenna, antenna cable and tuner.
• Cords for this product and those for other prod­ucts may be different colors even if they have the same function. When connecting this product to another product, refer to the supplied Installation manuals of both products and connect cords that have the same function.
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