Clarion APA4203 User manual

clarion

APA4203

APA4162

4-CHANNEL

CAR

AUDIO

AMPLIFIER

OPERATION

INSTALLATION

MANUAL

Clarion

APA4203/APA4162

TABLE

CONTENTS

Introduction

Description

Amplifier

Inputs/Controls/Power

Indicator.

Connections

for

Speakers/Power

Applications

4-Channel

Full-Range

Stereo

System

4-Channel

Satellite/Subwoofer

System

3-Channel

Stereo/Mono

System

2-Channel

High

Power

System

Pre-Out

Bi-Amped

Stereo

System

Mixed-Mode

System

Installation

Mounting

Precautions

Wiring

Precautions

Setting

Gain

Using

The

HP/LP

Filter

Using

The

Bass

Extender

Final

System

Checks

Troubleshooting

Everyone

Wants

"More

Bass"

Specifications

♦

Table

Contents

OPERATION/INSTALLATION

MANUAL

INTRODUCTION

Whether

you’ve

purchased

Clarion

APA4203

APA4162

4-channel

car

audio

amplifier,

you’ve

selected

one

the

finest

mobile

products

the

market

today.

The

APA4203

puts

out

watts

continuous

power

into

4-ohm

load

and

delivers

watts

(typical)

into

2-ohm

load.

The

APA4162

rated

watts

continuous

power

watts

(typical)

for

the

same

loads.

Both

models

come

with

the

following

features:

♦

Full

frequency

response

with

low

distortion

and

exceptional

signal-to-

noise

performance

♦

Advanced

circuit

design

features

bridgeable

and

mixed-mode

operation

for

use

variety

4-,

3-,

2-channel

systems

♦

Independent

front/rear,

(low-pass)/HP

(high-pass)

electronic

crossovers

each

with

per

octave

slope

and

full

adjustment

range

(from

200

Hz)

aid

audio

system

design

♦

Variable

bass

extender

circuit

reinforce

low

frequency

signals

that

may

lost

due

box

design

♦

Non-fade

summed-stereo

outputs

(on

APA4203)

for

system

expansion

♦

Ground

loop

isolation

inputs

with

adjustable

input

level

controls

wide

range

input

signals

(from

200

♦

Remote

turn-on

with

“soft-start”

muting

prevent

turn-on

“thump”

♦

Regulated

MOSFET

power

supply

with

low

RFI

and

protection

circuits

for

overheating

and

speaker

shorts

♦

2-oh

load

capability

drive

variety

speaker

systems

♦

Gold-plated

input/output

connectors

and

external

automotive-type

fuse

♦

Aluminum

heat

sink

for

efficient

dissipation

heat

order

start

enjoying

your

new

Clarion

4-channel

car

audio

amplifier

soon

possible,

please

read

the

remaining

pages

plan

your

installation.

When

you’re

finished,

fill

out

and

send

the

enclosed

warranty

card

protect

your

purchase

and

aid

any

service-related

questions.

Also,

save

your

original

bill

sale

proof

purchase.

Introduction

♦

Clarion

APA4203/APA4I62

DESCRIPTION

The

Clarion

APA4203

(or

APA4162)

4-channel

car

audio

amplifier

ideal

choice

for

creating

variety

multi-channel

sound

systems.

Both

models

features

built-in

system

design

flexibility

that

allows

you

create

2-,

3-,

4-channel

amplifier

with

flip

switch.

you

can

configure

the

front

(CHI/2)

rear

(CH3/4)

amplifier

sections

for

mixed-mode

operation

drive

set

satellite

speakers

and

subwoofer.

Figure

Clarion

APA4203

4-channel

car

audio

amplifier.

The

built-in

dB-per-octave

electronic

crossovers

let

you

tailor

the

sound

front

and

rear

channels.

Other

amplifiers

may

offer

single

filter,

but

this

unit

comes

with

two

independent

filters

with

adjustable

crossover

frequencies

for

high-pass

low-pass

filtering.

And

you

don’t

need

add

external

crossovers

and

cables,

resulting

cost-effective,

efficient

way

implement

your

design

ideas.

Either

amplifier

uses

regulated

MOSFET

power

supply

for

superior

control

output

wattage,

regardless

input

voltage

musical

energy

content.

MOSFETs

are

chosen

for

their

inherent

characteristics

provide

superior

accuracy,

stability,

and

control.

toroid-coil

transformer

yields

maximum

power

transfer

with

minimum

heat

loss.

Careful

attention

circuit

design

keeps

RFI

low

levels,

you

won’t

hear

unwanted

♦

Description

OPERATION/INSTALLATION

MANUAL

noise

when

the

level

cranked

up.

Protection

circuits

safeguard

the

amplifier

when

overheating

and

speaker

shorts

improper

load

conditions

occur.

All

connections

and

controls

are

end

panels

and

are

straightforward

and

easy

understand.

use

gold-plated

RCA

and

barrier

connectors

ensure

the

best

electrical

connection

for

your

system.

Included

are

external

automotive-type

fuses

that

are

easy

replace.

Amplifier

Inputs/Controls/Power

Indicator

The

APA4203’s

(or

APA4162’s)

front

panel

(see

Figure

has

SPEAKER

LINE

INPUT

connections,

(RCA)

INPUT

jacks,

GAIN

CHI/2

control,

INPUT

MODE

switch,

GAIN

CH3/4

control,

FILTER

CHI/2

and

CH3/4

controls

(for

setting

crossover

frequencies

for

filters),

BASS

EXTENDER

gain

control,

and

POWER

indicator.

Figure

Front

panel

Clarion

APA4203

APA4162

amplifier.

reference

chart

(see

detail)

shows

which

inputs

are

active

for

selected

mode.

Low-Level/Speaker-Level

Inputs

The

gold-plated

RCA

INPUT

jacks,

labeled

through

provide

connections

for

low-level

front/rear

stereo

source.

addition,

SPEA

LEVEL

INPUT

connections

are

provided

for

installations

where

the

source

unit’s

RCA

outputs

are

unavailable

and

direct

connection

speaker

outputs

the

only

choice

(see

Specifications

pages

and

for

wire

codes).

Gain

Controls

The

CHI/2

GAIN

and

CH3/4

GAIN

controls

allows

you

independently

set

the

nominal

operating

levels

the

amplifier’s

front

and

rear

channels.

The

amplifier’s

wide

range,

200

for

RCA

inputs

400

for

speaker-level

inputs,

can

accommodate

input

levels

from

virtually

any

brand

source

unit.

Description

♦

clarion

APA4203/APA4I62

DESCRIPTION

Amplifier

Inputs/Controls/Power

Indicator

(Continued)

Channel

Mode

Switch

The

INPUT

MODE

switch

allows

you

select

4-,

3-,

2-channel

operation.

reference

chart

above

the

switch

(see

Figure

the

page)

indicates

which

channel

inputs,

gain

controls,

and

fdters

are

active

for

your

selection.

High-Pass/Low-Pass

Filter

Controls

The

APA4203

(or

APA4162)

equipped

with

per

octave

electronic

filters

front

and

rear

channels

for

precise

frequency

attenuation

with

minimal

phase

distortion.

The

steep

crossover

slope

keeps

midrange

tones

out

the

subwoofer

and

thereby

eliminates

unnatural

“nasal”

tone

quality

the

audio

system.

filter

activated

sliding

the

CHI/2

CH3/4

FILTER

switch

either

LP.

Each

one

fully

adjustable

between

and

200

(via

the

CHI/2

FREQ

CH3/4

control)

for

wide

range

crossover

points.

Use

this

feature,

along

with

your

speaker

manufacturer’s

recommended

crossover

frequencies,

quickly

design

advanced

system

(see

Applications

starting

page

8).

NOTE:

CUl/2

FILTER

(or

CH3/4

FILTER)

set

OFF,

varying

the

CHI/2

FREQ

(or

CH3/4

FREQ)

control

will

produce

effect.

Bass

Extender

Control

The

APA4203

(or

APA4162)

also

features

“high-Q”

(i.e.,

narrow

frequency

band)

BASS

EXTENDER

circuit

channels

and

for

3-channel

modes

and

also

active

for

mono

connections.

acts

much

equalizer,

with

adjustable

gain

(from

+12

dB)

fixed

Hz.

Use

this

feature

tune

low-frequency

audio

response

compensate

for

less-than-ideal

subwoofer

enclosure

design.

The

added

boost

produces

rich,

full

bass

tones

that

are

normally

difficult

reproduce

the

car

audio

environment.

NOTE:

bass

extension

undesired,

set

BASS

EXTENDER

dB.

♦

Description

OPERATION/INSTALLATION

MANUAL

Connections

for

Speakers/Power

The

APA4203’s

rear

panel

(see

Figure

contains

summed

non-fade

output

jacks,

speaker

connections,

external

fuses,

and

power

connections.

Figure

Rear

panel

layout

the

Clarion

APA4203

amplifier.

The

APA4162’s

rear

panel

(see

Figure

similar,

but

without

the

summed

non-fade

output

jacks.

Figure

Rear

panel

layout

the

Clarion

APA4162

amplifier.

Summed

L/R

Preamplifier

Outputs

(APA4203

Only)

The

APA4203

includes

stereo

(gold-plated

RCA)

NON-FADE

LINE

OUT

jacks,

labeled

CHI/3

and

CH2/4,

for

sending

summed

L/R

preamplified

signals

additional

amplifiers,

shown

Figure

(on

page

12).

Speaker

Connections

The

speaker

terminals

are

gold-plated

terminals

and

are

labeled

FRONT

CHI

(left)

and

CH2

(right)

for

front

amplifiers

and

REAR

CH3

(left)

and

CH4

(right)

for

rear

amplifiers.

Power

Connections

The

power

connections

are

also

gold-plated

and

are

labeled

REMOTE

(for

remote

turn-on

via

source

unit),

GROUND,

and

BATTERY

(+12

Vdc).

Automotive-type

fuses

protect

the

front

and

rear

amplifier

circuits.

Description

♦

APPLICATIONS

The

Clarion

APA4203

(or

APA4162)

4-channel

car

audio

amplifier

can

used

variety

system

applications.

We’ve

enclosed

six

example

systems

help

plan

your

own

installation

(see

Figures

through

10).

4-Channel

Full-Range

Stereo

System

FRONT

PANEL

SETTINGS

Figure

this

application

theAPA4203

(or

APA4162)

used

4-channel

amplifier

drive

four

full-range

speakers

stereo.

♦

Applications

OPERATION/INSTALLATION

MANUAL

4-Channel

Stereo

System

2-Ch

High

Pass,

2-Ch

Low

Pass

FRONT

PANEL

SETTINGS

FK.TEP

HUBS

CHI/2

CH3/4

INPUT

MODE

OfTLpSlP

OfF"

Sef

Filter

Frequencies

speaker

manufacturer's

specifications.

Channel

(LF

Satellite)

Channel

(RF

Satellite)

(Each

satellite

requires

external

passive

crossover

network)

Channel

(RR

Subwoofer)

Figure

this

4-channel

system,

APA4203

(or

APA4162)

drives

pair

stereo

satellites

for

the

front

and

pair

stereo

subwoofers

for

the

rear.

Note

the

filter

settings

for

this

application.

Applications

♦

Clarion

APA4203/APA4I62

2-Channel

Stereo

System

With

Low-Pass

Bridged

Mono

Channel

FRONT

PANEL

SETTINGS

HLTER

FILTER

CHI/2

CH3/4

Set

Filter

Frequencies

speaker

manufacturer's

specifications

Bridged

Mono

(Subwoofer)

Figure

APA4203

(or

APA4162)

can

also

configured

drive

pair

stereo

satellites

for

the

front

and

single

mono

subwoofer

for

the

rear

Note

the

filter

settings

and

connections.

♦

Applications

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