Manual Pioneer GM-ME400X4 (page 2 of 8) (English, French)

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CAUTION

!Always keep the volume low enough to hear

outside sounds.

!Extended use of the stereo while the engine is

at rest or idling may exhaust the battery.

!This product is evaluated in moderate and tro-

pical climate condition under the Audio, video

and similar electronic apparatus - Safety re-

quirements, IEC 60065.

!The graphical symbol placed on the

product means direct current.

About the protection function

This product has protection function. When this

product detects something abnormal, the follow-

ing functions will operate to protect the product

and speaker output.

!The POWER/PROTECT indicator will turn red

and the amplifier will shut down in the situa-

tions outlined below.

—If the temperature inside the amplifier gets

too high.

—If a DC voltage is applied to the speaker

output terminal.

!The POWER/PROTECT indicator will turn red

and the output will be muted in the situations

outlined below.

—If the speaker output terminal and speaker

wire are short-circuited.

What’s what

Front side

Rear side

To adjust the switch, use a flathead screwdri-

ver if needed.

1FREQ (cut off frequency) control

Cut off frequency selectable from 40 Hz to

500 Hz if the LPF/HPF select switch is set to

LPF or HPF.

2GAIN (gain) control

Adjusting gain controls CHANNEL A (chan-

nel A) and CHANNEL B (channel B) helps

align the stereo output to the Pioneer ampli-

fier. Default setting is the NORMAL posi-

tion.

If the output remains low, even when the

stereo volume is turned up, turn the con-

trols to a lower level. If distortion occurs

when the stereo volume is turned up, turn

these controls to a higher level.

!If using only one input plug, set the gain

controls for speaker outputs A and B to

the same position.

!For use with an RCA equipped stereo

(standard output of 500 mV), set to the

NORMAL position. For use with an RCA

equipped Pioneer stereo, with maximum

output of 4 V or more, adjust level to

match that of the stereo output.

!For use with an RCA equipped stereo

with output of 4 V, set to the Hposition.

<5707000013050V>5

Before you start Setting the unit

3LPF (low-pass filter)/HPF (high-pass fil-

ter) select switch

Switch the settings based on the connected

speaker.

!When the Subwoofer is connected:

Select LPF. This eliminates high range

frequency and outputs low range fre-

quency.

!When the full range speaker is con-

nected:

Select HPF or OFF.HPF eliminates low

range frequency and output high range

frequency. OFF outputs the entire fre-

quency range.

4INPUT SELECT (input select) switch

Select 2CH for two-channel input and 4CH

for four–channel input.

5POWER/PROTECT indicator

The power indicator lights up to indicate

power ON.

!If something is not normal, the indicator

turns red.

Setting gain properly

!Protective function included to prevent

malfunction of the unit and/or speakers

due to excessive output, improper use or

improper connection.

!When outputting high volume sound etc.,

this function cuts off the output for a few

seconds as a normal function, but output

is restored when the volume of the head

unit is turned down.

!A cut in sound output may indicate impro-

per setting of the gain control. To ensure

continuous sound output with the head

unit at a high volume, set amplifier gain

control to a level appropriate for the preout

maximum output level of the head unit, so

that volume can remain unchanged and to

control excess output.

!Despite correct volume and gain settings,

the unit sound still cuts out periodically. In

such cases, please contact the nearest

authorized Pioneer Service Station.

Gain control of this unit

Preout level: 2 V (Standard: 500 mV)

Preout level: 4 V

Above illustration shows NORMAL gain set-

ting.

Relationship between amplifier gain

and head unit output power

If amplifier gain is raised improperly, this will

simply increase distortion, with little increase

in power.

Signal waveform when outputting at

high volume using amplifier gain

control

If the signal waveform is distorted due to high

output, even if the amplifier gain is raised, the

output power will change only slightly.

<5707000013050V>6

Setting the unit

Connection diagram

1Battery wire (sold separately)

!The maximum length of the wire be-

tween the fuse and the positive +term-

inal of the battery is 30 cm (12in.).

!For the wire size, refer to Connecting the

power terminal. The battery wire, the

ground wire and the optional direct

ground wire must be same size. After

making all other connections at the am-

plifier, connect the battery wire terminal

of the amplifier to the positive +term-

inal of the battery.

2Fuse (60 A) (sold separately)

Each amplifier must be separately fused at

60 A.

3Positive +terminal

4Negative (*) terminal

5Battery (sold separately)

6Ground wire, Terminal (sold separately)

The ground wires must be same size as the

battery wire.

7Stereo with RCA output jacks (sold separately)

8External output

If only one input plug is used, do not connect

anything to RCA input jack B.

9Connecting wire with RCA pin plugs (sold se-

parately)

aRCA input jack A

bRCA input jack B

cAmplifier with RCA input jacks (sold sepa-

rately)

dRCA output jack

Outputs the signal input to CH A.

eSpeaker output terminals

Please see the following section for speaker

connection instructions. Refer to Connections

when using the speaker input wire.

fSystem remote control wire (sold separately)

gFuse (30 A) × 2

hFront side

iRear side

Note

INPUT SELECT (input select) switch must be set.

For details, see Setting the unit.

Before connecting the

amplifier

WARNING

!Secure the wiring with cable clamps or adhe-

sive tape. To protect the wiring, wrap sections

in contact with metal parts in adhesive tape.

!Never cut the insulation of the power supply

to feed power to other equipment. Current ca-

pacity of the wire is limited.

CAUTION

!To prevent water from entering the amplifier,

attach a cover or cap to each terminal when

not in use.

!Never shorten any wires, the protection circuit

may malfunction.

<5707000013050V>7

Connecting the units

!Never wire the speaker negative cable directly

to ground.

!Never band together multiple speaker’s nega-

tive cables.

!If the system remote control wire of the ampli-

fier is connected to the power terminal via the

ignition switch (12 V DC), the amplifier will re-

main on with the ignition whether the stereo

is on or off, which may exhaust battery if the

engine is at rest or idling.

!Install and route the separately sold battery

wire as far as possible from the speaker wires.

Install and route the separately sold battery

wire, ground wire, speaker wires and the am-

plifier as far away as possible from the anten-

na, antenna cable and tuner.

About bridged mode

!Do not install or use this amplifier by wiring

speakers rated at 2 W(or lower) in parallel to

achieve a 1 W(or lower) bridged mode (Dia-

gram B).

Amplifier damage, smoke, and overheating

could result from improper bridging. The am-

plifier surface could also become hot to the

touch and minor burns could result.

To properly install or use a bridged mode and

achieve a 2 Wload, wire two 4 Wspeakers in

parallel with Left +and Right *(Diagram A)

or use a single 2 Wspeaker.

In addition, refer to the speaker instruction

manual for information on the correct connec-

tion procedure.

!For any further enquiries, contact your local

authorized Pioneer dealer or customer

service.

About suitable

specification of speaker

Ensure speakers conform to the following

standards, otherwise there is a risk of fire,

smoke or damage. Speaker impedance is 2 W

to 8 W,or4Wto 8 Wfor two-channel and other

bridge connections.

Subwoofer

Speaker channel Power

Four-channel output Nominal input:

Min. 75 W

Two-channel output Nominal input:

Min. 200 W

Three-channel

output

Speaker output

Nominal input:

Min. 75 W

Speaker output

Nominal input:

Min. 200 W

Other than subwoofer

Speaker channel Power

Four-channel output Max. input:

Min. 150 W

Two-channel output Max. input:

Min. 400 W

Three-channel

output

Speaker output

Max. input:

Min. 150 W

Speaker output

Max. input:

Min. 400 W

<5707000013050V>8

Connecting the units

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Pioneer GM-ME400X4 Manual

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