Adcom GFA-4302 Manuel utilisateur

ADEM

CAR

AUDIO

AMPLIFIERS

OWNER’S

MANUAL

GFA-4302

GFA-4402

GFA-4304

GFA-4404

GFA-4702

IMPORTANT:

sure

connect

the

POWER

and

GROUND

correctly!

Warranty

will

affected

the

amplifier

incorrectly

connected!

INSTALLATION

ADVISORY:

Clipped

strands

power

speaker

wire

could

enter

the

amplifier

through

the

Free-Flow

perforated

sleeve.

sure

clip

wires

well

away

from

the

amplifier

avoid

this

possibility

Features

and

specifications

subject

change

without

notice.

ADCOM

Car

Audio

registered

trademark

ADCOM.

All

rights

reserved.

ADCOM

Inc.

AOWNER'S

ADCOM

MANUAL

Congratulations!

And

thank

you

for

choosing

ADCOM

Car

Audio

Amplifiers

for

your

mobile

sound

system.

Your

ADCOM

Car

Audio

Amplifier

uses

superior

engineering

principles

and

the

highest

quality

components

provide

musical

experience

with

clarity

and

dynamics

never

before

achieved

vehicle.

PLEASE

read

this

manual

entirely

before

attempting

install

this

product.

Due

the

sophisticated

nature

this

equipment,

highly

recommend

using

authorized

ADCOM

Car

Audio

Dealer

achieve

the

maximum

performance

from

your

mobile

sound

system!

Your

warranty

affected

you

choose

install

your

ADCOM

amplifier

yourself.

You

will

only

receive

all

the

benefits

the

limited

warranty

the

amplifier

professionally

installed

authorized

ADCOM

Car

Audio

Dealer!

Please

refer

your

warranty

card

for

further

details.

GFA-4302

GFA-4402

GFA-4304

GFA-4404

GFA-4702

Power

Output

W/Ch

WICh

2Ohms

Stereo

<0.25%

THD*

<0.25%

THD*

<0.25%

THD*

<0.25%

THD*

<0.2%

THD*

40hms

Mono

<0.25%

THD*

<0.25%

THD*

<0.25%

THD*

<0.25%

THD*

_<0.2%

THD*

Frequency

OHz-50KHz

OHz-SOKHz

Response

+0dB,

-3dB

+0dB,

-3dB

+0dB,

-3dB

+0dB,

-3dB

+0dB,

-3dB

Power

OHz-50KHz

OHZ-5UKHZ

QHZ-SOKHZ

OHz-SOKHz

Bandwidth

+0dB,

-3dB

+0dB,-3dB

+0d8,

-3dB

Input

Impedance

a5KOhms

a5kOhms

askOhms

85KOhms

8.5

Ohms

Input

Sensitivity

400mV

60OMV

Separation

>90

S/N

Ratio

2100

100

Damping

Factor

aso

sœ

æo

idle

Current

Amps

Fuse

Size

Amp

Weight

Ibs

(3.7kg)

Ibs

(4.6kg)

Ibs

(5.5kg)

lbs

(8.7kg)

Ibs

(14.6kg)

Dimensions

9.75x10.75x2.3"

9.75x12.76x2.2"

9.75x14.75x2.3"

9.75x24.25x2.3"

inches

WxLxH

WxLxH WxLxH

WxLxH

9.75x15.5x2.3"

THD

Ratings

measured

between

20Hz

and

20khz

HOW

USE

THIS

MANUAL

This

manual

divided

into

three

distinct

sections:

Section

Common

features,

instructions

and

connections

for

all

ADCOM

Car

Audio

amplifiers.

Section

Installation

instructions

for

the

GFA-4302

and

GFA-4402

(These

amplifiers

use

RCA

type

input

connections)

Section

Installation

instructions

for

the

GFA-4304,

GFA-4404

and

GFA-4702

(These

amplifiers

use

5-pin

XLR

type

input

connections)

Sections

and

there

are

diagrams

help

install

ADCOM

Car

Audio

amplifiers

the

most

popular

configurations.

extensive

installation

required,

recommended

that

your

authorized

ADCOM

Car

Audio

dealer

perform

the

installation.

Technical

support

available

our

Customer

Service

department

calling

(908)

390-1130

9am

5pm

EST.

SECTION

Common

Features

UNPACKING:

Below

list

what

included

with

each

model

amplifier:

GFA-4302

and

GFA-4402

GFA-4304

and

GFA-4404

Amplifier

Owner’s

Manual

Owner’s

Manual

Warranty

Card

Warranty

Card

Line

Fuse

Holder

Line

Fuse

Holder

RCA

Shorting

Plugs

GFY-4

XLR/RCA

Adapters

GFA-4702

(Amp

Section)

GFA-4702

(Power

Supply)

Amplifier

Section

Power

Supply

Section

Owner's

manual

Warranty

Card

GFY-4

XLR/RCA

Adapter

GFC-1

Power

Cable

anything

missing

from

your

carton,

please

contact

your

dealer

call

directly.

sure

verify

that

the

serial

number

printed

the

bottom

the

amplifier

the

same

the

serial

number

the

carton.

either

number

missing

altered,

you

shouid

contact

ADCOM

immediately

(908)

390-1130.

Before

each

ADCOM

Car

Amplifier

leaves

our

facility

New

Jersey,

carefully

inspected

for

physical

imperfections

and

electrical

performance

routine

part

ADCOM'’s

Quality

Assurance

system.

This

ensure

flawless

performance

and

appearance

when

you

receive

it.

After

you

have

unpacked

your

amplifier,

inspect

for

physical

damage.

the

unlikely

event

that

damage

has

occurred

during

shipping,

freight

claim

cover

shipping

damage

can

initiated.

THE

RIGHT

CLAIM

AGAINST

PUBLIC

CARRIER

CAN

FORFEITED

THE

CARRIER

NOT

NOTIFIED

PROMPTLY

AND

THE

SHIPPING

CARTON

AND

PACKING

MATERIAL

ARE

NOT

AVAILABLE

FOR

INSPECTION.

SAVE

ALL

PACKING

MATERIAL

UNTIL

THE

CLAIM

HAS

BEEN

SETTLED.

MOUNTING:

Ail

audio

components

vehicle

should

securely

mounted,

they

could

become

airborne

the

event

collision;

Serious

injury

could

occur.

ADCOM

Car

Audio

amplifiers

may

mounted

almost

anywhere;

every

model

fan-cooled,

mounting

possibilities

are

limited

only

your

imagination.

these

simple

guidelines

ensure

long

life,

cosmetic

integrity

and

sonic

dependability:

Always

securely

mount

the

component

flat

surface

using

all

mounting

holes.

Never

mount

audio

component

where

loose

objects

can

come

contact

with

it.

Never

mount

amplifier

under

rug,

mat

carpet.

Remember,

the

better

the

ventilation,

the

less

chance

your

amp

will

thermally

shut

down!

When

mounting,

not

use

the

amplifier

drilling

template.

Use

marking

template,

only.

When

mounting

amplifier,

use

only

Pan-Head

screws,

not

beveled

head,

and

NOT

OVER-TIGHTEN!

Pan

Head

Screw

CONNECTING

POWER:

ADCOM

amplifiers

are

designed

used

with

Volt,

negative-

ground

vehicles.

The

first

step

disconnect

the

Ground(-)

battery

terminal!

The

positive

and

negative

gold-plated

power

connectors

the

amplifier

will

accommodate

GAWG

wire.

8AWG

cabie

the

standard

gauge

and

will

fit

with

the

insulation

into

the

power

connectors.

than

one

amp

being

installed,

use

4AWG

from

the

battery

power

distribution

block.

Run

BAWG

from

the

distribution

block

each

amplifier.

All

ground

connections

should

short

practically

possible

and

terminated

the

same

location.

fuse

protection

device

MUST

the

+12

Volt

power

cable

within

18”

the

battery.

should

also

readily

accessible.

additional

fuse

holder

may

located

within

18”

the

amplifier

power

distribution

block.

The

fuse

near

the

battery

protect

your

vehicle.

optional

fuse

near

the

amplifier

help

protect

the

amplifier!

When

fuse

blows,

replace

ONLY

with

identical

amperage

fuse!

Connect

the

IGN

terminal

the

amplifier

the

source

unit’s

power

antenna,

remote

amp-turn-on

lead.

When

the

source

turned

on,

supplies

volts

the

IGN,

which

turns

the

amplifier

on.

two

components

are

being

turned

the

remote

lead,

suggested

“relay”

the

turn

on.

(see

Fig.

Here,

the

relay

(Bosch

0-322-204-150

P&B

VF4-45F11)

triggered

the

remote

lead

which

sends

current

the

IGN

connections.

This

considered

good

installation

technique

and

SPDT

relay

readily

available

from

most

installation

shops.

From

source

unit’s

“Power

Antenna”

“Remote”

lead

“IGN”

“Turn-On”

terminal

all

Amplifiers,

GFis

and

processors

constant

+12

Volts

(B+

power

distribution

block)

Fig.

Chassis

Ground

86=]

SPEAKER

CONNECTIONS:

ADCOM

uses

gold-plated

speaker

connectors

that

will

accommodate

8AWG

speaker

wire.

Standard

speaker

wire

gauge

12AWG

16AWG

and

will

fit

easily

into

the

terminals.

sure

there

are

frayed

loose

wire

strands

that

may

end

touching

other

wires.

Speaker

polarity

clearly

marked;

special

attention

must

taken

while

connecting

speakers.

Speaker

polarity

essential

proper

amplifier

operation!

Any

number

speakers

may

used

with

your

ADCOM

Car

Audio

amplifier.

The

“system

impedance”

dependent

the

wiring

configuration

and

selection

speakers.

Although

ADCOM

amplifiers

are

stable

into

loads

less

than

continuous

operation

into

impedances

lower

than

may

eventually

lead

thermal

overload,

causing

the

amplifier

shut

down

until

cools

off.

Your

authorized

ADCOM

Car

Audio

dealer

best

able

maximize

the

performance

your

system

calculating

impedance

and

ensuring

the

proper

connection

all

system

components.

MoSt™

CONFIGURATION:

ADCOM

Car

Audio

amplifiers

are

capable

running

stereo

and

mono

configurations

simultaneously.

order

achieve

this,

one

channel

must

inverted

the

input.

Inverting

simply

means

making

the

positive

lead

negative,

and

the

negative

lead

positive.

For

consistency,

recommend

that

the

“B”

“RIGHT”

channel

inverted.

addition,

the

same

channel’s

output

must

inverted

complete

the

process.

Inverting

techniques

will

discussed

sections

and

INPUT

SENSITIVITY

SETTING:

Located

the

end

panel,

along

with

the

input

connectors,

are

two

small

openings

that

house

the

input

sensitivity

controls.

THEY

ARE

NOT

AMPLIFIER

VOLUME

CONTROLS!

When

properly

set,

they

match

the

output

the

source

unit

with

the

input

the

amplifier.

you

wish

have

the

amplifier

and

source

unit

properly

matched,

consult

your

authorized

ADCOM

Car

Audio

dealer.

Optimal

performance

and

the

advantages

“passively

terminated

balanced”

inputs

are

realized

when

sensitivity

controls

are

turned

fully

clockwise.

Since

the

sensitivity

controls

affect

only

the

positive

inputs,

the

controis

MUST

fully

clockwise

the

MaSt™

mono

configurations.

CARE

AND

CLEANING:

Great

care

has

been

taken

ADCOM

assure

that

your

amplifier

flawiess

appearance

electrically.

the

event

that

your

ADCOM

amplifier

needs

cleaning,

use

damp

cloth

dry,

soft

bristled

paint

brush.

not

use

cleaning

fluids

any

kind

damage

the

finish

may

result.

Treat

this

product

precision

instrument,

and

will

provide

you

with

many

years

musical

enjoyment.

you

experience

any

problems

with

your

ADCOM

Car

Audio

amplifier,

please

contact

your

local

authorized

dealer

call

ADCOM

Customer

Service

(908)

390-1130

between

9am

and

5pm

EST.

Ask

for

Technical

Assistance

for

car

audio.

SECTION

RCA

Input

Amps

INPUT

SECTION:

may

seem

unusual

find

RCA

inputs

channel

amplifier,

but

that

just

what

you

will

find

when

you

inspect

the

ADCOM

GFA-4302

GFA-

4402

amplifiers.

Channel

“A”

the

“LEFT”

and

channel!

“B”

the

“RIGHT”.

The

inputs

the

left

side

are

the

(+)positive

inputs

and

the

inputs

the

right

side

are

the

(-}

negative

inputs.

you

wish

run

these

amplifiers

the

Balanced

mode,

strongly

suggested

that

authorized

ADCOM

Car

Audio

dealer

handle

this

installation!

There

are

two

ways

run

RCAs

into

these

amplifiers.

For

stereo

operation,

RCAs

connect

the

left-most

input

jacks,

labeled

A+

and

B+.

When

using

the

amplifier

either

bridged

Mono

MoSt™

configuration,

the

upper

left

and

lower

right

inputs,

labeled

A+

and

B-,

are

used.

Always

insert

the

included

RCA

Shorting

Plugs

into

unused

RCA

inputs!

WIRING

DIAGRAMS:

There

are

basic

wiring

schemes

for

the

GFA-4302

and

GFA-4402:

they

are

follows:

Stereo

Mono

MoSt™

(Mono/Stereo

simultaneously)

the

Stereo

mode,

the

RCA

interconnect

cables

connect

the

Amplifier

follows:

The

left

cable

A+

input

and

the

right

cable

B+

input.

Speakers

hook

normally:

“A+”

and

“A-”

outputs

LEFT

speaker(s)

(+)pos

(-)neg,

and

“B+”

and

“B-”

outputs

the

RIGHT

speaker(s)

(+)pos

(-)neg.

See

Fig.2.

Remember

insert

the

RCA

Shorting

Plugs

the

unused

inputs.

CERTAIN

POWER/GROUND

CONNECTIONS

Fig.

the

Mono

mode,

the

LEFT

RCA

cable

connects

A+

input,

the

RIGHT

RCA

cable

connects

B-

input.

Remember

insert

the

RCA

Shorting

Plugs

the

unused

inputs.

The

speaker

outputs

connect

the

speaker

follows:

A+

output

connects

the

Positive(+)

speaker

terminal;

B+

output

connects

the

Negative(-)

speaker

terminal

(see

Fig.

3).

ADCOM

car

audio

amplifiers

are

stable

driving

Ohm

mono

load,

but

not

recommended.

For

best

results

(maximum

SPL

and

low

THD),

suggest

Ohm

mono

load.

CERTAIN

POWER/GROUND

CONNECTIONS

Fig.

the

MoSt™

configuration,

the

amplifier

capable

driving

multiple

pairs

stereo

speakers

(properly

crossed-over),

and

multiple

mono

subwoofers,

simultaneously!

wire

the

MoSt™

configuration,

connect

the

LEFT

RCA

the

A+

input;

connect

the

RIGHT

RCA

the

B-

input

Remember

insert

the

RCA

Shorting

Plugs

the

unused

inputs.

Wire

speakers

shown

Fig.

LEFT

Shorting

esas)

Since

you

are

inverting

the

input

“B”

RIGHT

channel

You

invert

the

“B”

RIGHT

channel

output,

well.

SUBWOOFER

CERTAIN

POWER/GROUND

CONNECTIONS

Fig.

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