Pioneer Official Manual for GM-3100T Stereo Amplifier Setup and Usage

Setting the Unit		<ENGLISH>
Gain Control	Power Indicator

Connecting the Unit

CAUTION

• Disconnect the negative (–) terminal of the battery

• Make sure that wires will not interfere with mov-

Connection Diagram

Fuse (30 A)

Connecting the Power Terminal

• Always use the special red battery and ground

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

<ENGLISH>

WARNING

Failure to securely fasten the battery wire to the ter-

If the sound level is too low, even when the volume of the car stereo used along with this power amplifier is turned up, turn gain control on the front of the power amplifier clockwise. If the sound distorts when the volume is turned up, turn the gain control counter-clockwise.

• 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.

• If you hear too much noise when using the

The power indicator lights when the power is switched on.

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.

ing parts of the vehicle, such as the gearshift,

handbrake or seat sliding mechanism.

• Do not shorten any wires. Otherwise the protec-

tion 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.

• Never replace the fuse with one of greater value

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.

Grommet

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.

Ground wire (black) [RD-223] (sold separately) Connect to metal body or chassis.

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.

Engine	Interior of
Fuse (30 A) compart-
ment	the vehicle

minal using the terminal screws could cause the ter- minal area to overheat and could result in damage and injury including minor burns.

Connecting the Speaker Output Terminals

1.	Expose the end of the speaker wires
	using nippers or a cutter by about
	10 mm (3/8 inch) and twist.
2.	Attach lugs to speaker wire ends.

speaker input terminals, turn the gain

control counter-clockwise.

CAUTION:

To prevent damage and/or injury

Connecting wire with RCA pin plugs (sold separately).

Fuse (30 A)	Drill a 14 mm
Positive terminal	(1/2 inch) hole

Lugs not supplied.

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

3. Connect the speaker wires to the

speaker output terminals.

• Do not ground the speaker wire directly or con-

nect 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 recre-

ational 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

• 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 2 to 8 ohms for stereo connection, and 4 to 8

ohms for monaural and other bridge connection.

• 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 prod-

ucts may be different colors even if they have the

same function. When connecting this product to

Front side

RCA input jack

Car stereo with

RCA output jacks

External Output

Speaker input terminal

Insert the O-ring rubber	into the vehicle
grommet into the vehicle	body.
body.

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 speaker wires securely with the termi-

nal screws.

Terminal screw

Speaker output terminal

Speaker wire

rest or idling.

another product, refer to the supplied Installation

manuals of both products and connect cords that

have the same function.

Back sideSee the “Using the Speaker Input” section.

• Fix the wires securely with the terminal

screws.

LPF (Low-Pass Filter) Select Switch

Set the LPF select switch as follows according to the type of speaker that is connected to the speaker output connector and the car stereo system:

LPF Select	Audio frequency range	Speaker	Remarks
Switch	to be output	Type
LPF (right)	Very Low Frequency range	Subwoofer	Connect a subwoofer.
OFF (left)	Full range	Full range

Speaker Channel	Speaker Type	Power
Two-channel	Subwoofer	Nominal input: Min. 60 W
	Other than subwoofer	Max. input: Min. 120 W
One-channel	Subwoofer	Nominal input: Min. 180 W
	Other than subwoofer	Max. input: Min. 300 W

Fuse (25 A)
Speaker output terminal	System remote control wire (sold separately)
See the “Connecting the	Connect the male terminal of this wire to the system remote control
Speaker Wires” section	terminal of the car stereo (SYSTEM REMOTE CONTROL). The
for speaker connection	female terminal can be connected to the auto-antenna relay control
instructions.	terminal. If the car stereo does not have a system remote control ter-
	minal, connect the male terminal to the power terminal through the
	ignition switch.

	GND terminal
Power terminal	System remote
	control terminal
	System remote
	control wire
	Ground wire

Battery wire