Pioneer GM-D8400M - Amplifier Посібник користувача - Сторінка 2

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Pioneer GM-D8400M - Amplifier Посібник користувача

Setting the Unit

ENGLISH

Setting the Gain properly

There is no need to decrease the volume of the

head unit and too much output is controlled.

• This unit is equipped with a protective function to

prevent malfunction of the unit itself and speakers

Relationship between the gain of the

from too much output, improper use or improper

connection.

amplifier and the output power of the

• When outputting sound at high volume etc., this

head unit

function will cut off the sound output in a few

seconds. But this is not a malfunction. When you

turn down the volume of the head unit the sound

Power

Normal gain

Maximum gain

output will be restored.

Equal power

• If sound output is cut, the gain control of this unit

may be improperly set. To ensure continuous

sound output at increased volume of the head unit,

set the gain control of the amplifier to a proper

position according to the preout maximum output

Head unit volume steps

level of the head unit.

Amplifier gain

(normal)

• If you raise the gain of the amplifier to an improp-

er level, only distortion is increased and the power

Gain Control of This Unit

increases only slightly.

Preout level: 2 V

Signal waveform when outputting at high

(Standard: 500 mV)

volume by the gain control of the amplifier

Preout level: 4 V

Normal gain

Maximum gain

Equal power

Preout level: 6.5 V

Signal

waveform

Amplifier gain

• The above illustration shows the gain set to

(normal)

(maximum)

NORMAL.

• With high output the signal waveform is distorted,

if you raise the gain of the amplifier the power

changes only slightly.

• If you decrease the volume of the head unit and

set the gain control of the amplifier to the proper

position but still the sound cuts out from time to

time, contact the nearest authorized PIONEER

Service Station.

Connecting the Unit

CAUTION

• Disconnect the negative (–) terminal of the battery

To prevent damage and/or injury

to avoid the risk of short-circuit and damage to

• Do not ground the speaker wire directly or con-

the unit.

nect a negative (–) lead wire for several speakers.

• Secure the wiring with cable clamps or adhesive

• This unit is for vehicles with a 12-volt battery and

tape. To protect the wiring, wrap adhesive tape

negative grounding. Before installing it in a recre-

around it where they lie against metal parts.

ational vehicle, truck or bus, check the battery

• Do not route wires where they will get hot, for

voltage.

example where the heater will blow over them. If

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

the insulation heats up, it may become damaged,

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

resulting in a short-circuit through the vehicle

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

body.

rest or idling.

• Make sure that wires will not interfere with mov-

• If the system remote control wire of the amplifier

ing parts of the vehicle, such as the gearshift,

is connected to the power terminal through the

handbrake or seat sliding mechanism.

ignition switch (12 V DC), the amplifier will

Amplifier gain

• Do not shorten any wires. Otherwise the protec-

(maximum)

always be on when the ignition is on— regardless

tion circuit may fail to work when it should.

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

• Never feed power to other equipment by cutting

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

the insulation of the power supply wire to tap

rest or idling.

from the wire. The current capacity of the wire

• DO NOT connect a subwoofer with a lower

will be exceeded, causing overheating.

impedance than specified in the "Connecting the

• Never replace the fuse with one of greater value

Speaker Wires" section. Amplifier damage,

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

smoke, and overheating could result from a non-

er fuse could result in overheating and smoke and

specified connection. The amplifier surface could

could cause damage to the product and injury

also become hot to the touch and minor burns

including burns.

could result.

• Connect either of two subwoofers to the amplifier;

1: a subwoofer with a 350 W or larger nominal

input and an impedance 4 Ω, or 2: a subwoofer

with a 600 W or larger nominal input and an

impedance 2 Ω. If the nominal input and imped-

ance are out of the above ranges, the subwoofer

may catch fire, emit smoke or become damaged.

• 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.

Connection Diagram

CAUTION:

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

(RCA).

Grommet

Fuse (40 A) × 2

Bass Boost Remote Control

Bass Boost Remote Control Wire

Jack for the bass boost remote

control

Connect this jack and the bass

boost remote control with the

bass boost remote control wire.

Fuse (30 A) × 2

Solderless Terminal Connections

• Do not connect a cord having an exposed core

Special red battery wire [RD-228] (sold separately)

After making all other connections at the amplifier,

• Since the wire will become loose over time, it

connect the battery wire terminal of the amplifier to

the positive (+) terminal of the battery.

• Do not solder or bind the ends of the twisted

• Fasten while making sure to not to clamp the

Ground wire (black) [RD-228] (sold separately)

Connect to metal body or chassis.

• Use the supplied hexagonal wrench to tighten and

Connecting wire with RCA

6 m

pin plugs (sold separately).

Car stereo with

Connecting the Power Terminal

RCA output jacks

• We recommend that you use the special red bat-

External Output

(Subwoofer output)

• Recommended wires size (AWG: American Wire

RCA input jack

• Use a 10 AWG to 20 AWG wire for the system

Battery Wire and Ground Wire Size

Reverse side

Wire Length

Speaker terminal

See the "Connecting the Speaker Wires"

Wire Size

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 ter-

minal, connect the male terminal to the power terminal through the

ignition switch.

ENGLISH

1. Pass the battery wire from the

engine compartment to the interior

of the vehicle.

wire to the power terminals of this amplifier

(Power terminal, GND terminal, System remote

• After making all other connections to the

control terminal). Disconnection or breakage of

amplifier, connect the battery wire terminal of

the core wire can cause a fire or short-circuit.

the amplifier to the positive (+) terminal of

the battery.

must be periodically inspected and tightened as

Engine

necessary.

Positive (+)

compartment

terminal

wires.

insulating sheath of the wire.

Fuse (40 A) × 2

loosen the terminal screw of the amplifier.

Securely fasten the wire with the terminal screw.

Drill a 13 mm

However, since excessively tightening the terminal

Insert the O-ring rubber

hole into the

screw of the System remote control has the risk of

grommet into the vehicle

vehicle body.

damaging the wire, be careful not to tighten

body.

excessively by observing the status of the wire

when tightening.

2. Connect the wires to the terminal.

• Fix the wires securely with the terminal

screws.

tery and ground wire [RD-228], which is sold sep-

arately. Connect the battery wire directly to the

System remote

Terminal screws

car battery positive terminal (+) and the ground

control terminal

wire to the car body.

GND terminal

Gauge) is as follows. The battery wire and the

Power terminal

ground wire must be same size.

Ground wire

remote control wire.

Battery wire

System remote

control wire

less than

4.5 m

7.2 m

11.4 m

8 AWG

6 AWG

4 AWG

WARNING

Failure to securely fasten the battery wire to the ter-

minal using the terminal screws could cause the ter-

minal area to overheat and could result in damage

and injury including minor burns.

Interior of

the vehicle