Alpine 3554 Manuale utente

SERVICE

MANUAL

ZILPIN

4/3/2

Channel

Power

Amplifier

3554

Contents

SPECiICALIONS:

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Characteristic

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Disassembly

Instructions

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Block

Diagram

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Parts

Layout

P.C.Boards

and

Wiring

Diagram

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Schematic

Diagram

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iC’s

and

Transistors

Voltage

Values

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Exploded

View

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Packing

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Semi-Conductor

Lead

Identifications

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Specifications

Power

SOUICE

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14.4VDC

(11

16V)

Current

Drain

(No

Signal)

......

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3.5A

Power

Output

KHz,

0.8%

THD)

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145W/4ch

Input

Sensitivity

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net

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Fixed:

0.5V+

Variable:

2V+

Frequency

Response

(-10B)

........-.

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kHz

Signal

Noise

Ratio..............-.-55--

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100

Separation

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56dB

Input

Impedance

....

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kohm

Output

Impedance

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4o0hm

Output

Noise

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1mvV

Semiconductors

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IC’s,

Transistors,

Diodes,

Zener

Diodes,

LED's

Dimensions

......

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enn

285(W)x

55(H)

300(D)

WEIGHT

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4.15

NOTE:

Due

continuing

product

improvement,

specifications

and

design

are

subject

change

without

notice.

Features

4/3/2-Channel

Operation:

The

3554

can

used

ways

as:

4-channel

full-range

amplifier,

producing

50W

per

channel

into

ohms,

75W

per

channel

into

ohms.

The

amplifier

can

used

4-speaker

full

range

system

bi-amped,

dual

subwoofer

and

dual

satellite

combination.

3-channel

amplifier,

producing

50W

ohms)

75W

ohms)

into

channels

and

150W

ohms)

into

the

third

channel.

This

combination

perfect

for

single

subwoofer,

dual

satellite

(right

and

left)

system.

2-channel

full-range

amplifier,

producing

150W

per

channel

into

ohms.

The

amplifier

can

used

full

range,

low-pass

(sub-woofer

amp),

high-pass

(satellite

amp).

Status

Monitor:

This

indicator

illuminates

green

when

the

3554

and

operational.

This

light

will

turn

orange

any

protection

circuitry

activated.

can

used

troubleshooting

aide

should

installation

problem

develop.

Active

Dividing

Network:

Abuilt-in,

switchable

electronic

crossover

network

Hz,

per

octave

can

used

set

the

amplifier

for

low-pass

(subwoofer)

high-pass

(tweeter/midrange

satellite)

applications.

This

network

can

also

switched

off

allow

full-range

signal

amplification.

Duo-B

Feedback

Circuitry:

Duo-Beta

patented

and

technologically

advanced

form

negative

feedback.

Negative

feedback

used

minimize

distortion

and

stabilize

the

amplifier.

Too

much

feedback,

however,

increases

the

transient

intermodulation

distortion

(T.I.M.),

decreases

the

amplifier

slew

factor,

and

reduces

its

musicality.

The

Duo-Beta

circuitry

supplies

low

negative

feedback

throughout

the

audio

frequency

and

very

high

negative

feed-back

DC.

This

stabilizes

the

amplifier,

removes

offset,

and

offers

excellent

total

harmonic

distortion

(T.H.D.)

characteristics.

also

provides

low

T.I.M.,

with

excellent

slew

factor,

stability,

and

musicality.

Current

Limiting:

Current

limiting

circuitries

used

conventional

amplifiers

may

cause

premature

clipping

and

inferior

transient

response.

Absence

current

limiters

the

audio

section

ensures

low

T.I.M.,

excellent

transient

response,

and

superb

sonic

quality.

S.T.A.R.

Circuitry:

Alpine

proprietary

Signal

Transit

for

Accurate

Response

circuit

topology

improves

sonic

properties

reducing

interaction

between

different

sections

the

circuitry.

3554

Input

Mode

Selector:

This

switch allows

the

user

specify

the

input

signal

entering

the

amplifier:

Stereo

Mode:

Allows

the

right

and

left

channel

signals

reach

their

designated

amplifier

channels.

This

mode

provides

stereo

output

center

channel

common

information

output

(when

used

the

bridged

configuration).

(MONO)

Mode:

Disables

the

right

channel

input

connector

and

routes

the

signal

through

the

left

channel

input

all

sections

the

amplifier.

This

mode

can

used

when

single

(mono)

signal

amplified

(either

stereo

bridged

operation).

L+R

Mode:

Sums

the

right

and

left

channel

input

signals

and

routes

the

result

all

sections

the

amplifier.

can

used

stereo

bridged

operation

provide

summed

(mono)

output.

(2)

DC-to-DC

Switching

Mode

Power

Supply:

Provides

excellent

power

output

throughout

the

audio

bandwidth

(20

kHz).

Its

soft

clipping

characteristics

ensure

superb

transient

response

and

musicality.

Fully

Complementary,

Discrete

Output

Circuitry:

For

excellent

reliability,

superb

sonic

performance

and

high

current

capability

for

accurate

transient

response.

Continuously

Adjustable,

Independent

Front

and

Rear

Input

Gain

Controls:

Allow

different

level

settings

for

the

two

different

audio

sections.

Heavy

Duty

Construction:

Glass-epoxy

printed

circuit

boards

for

excellent

thermal

stability

and

long-term

reliability.

Gold-Plated

RCA

input

Connectors:

For

most

accurate

signal

transmission

and

lowest

possible

loss.

Gold-plated

terminals

are

immune

signal

deterioration

caused

corrosion

the

connectors

that

can

develop

over

time.

Gold-Plated

Speaker

Output

and

Power

Connectors:

For

high

definition,

minimum

loss

power

transfer

and

oxidization

resistance.

High

Performance,

Low

Noise,

Audiophile

Quality

Active

and

Passive

Components.

Capacitive/inductive

Power

Supply

Input

and

Output

Filtering:

For low

radio

frequency

interference

(RFI)

and

immunity

system

noises

(such

alternator

whine).

Fully

Protected

Against

Wiring

Errors.

3554

Switches

And

Terminals

PDQQOVOOO@

OOOHOO

Input

Mode

Selector

Switch

(Channels

1/2)

Active

Dividing

Network

Mode

Selector

Switch

(Channels

1/2)

Input

Gain

Selector

Switch

(Channels

1/2)

Input

Gain

Adjustment

Control

(Channels

1/2)

Input

Gain

Adjustment

Control

(Channels

3/4)

Input

Gain

Selector

Switch

(Channels

3/4)

Active

Dividing

Network

Mode

Selector

Switch

(Channels

3/4)

Input

Mode

Selector

Switch

(Channels

3/4)

Input

RCA

Jacks

(Channels

1/2)

Speaker

Output

Terminals

(Channels

1/2)

Fuse

Blocks

Power

Terminals

Remote

Connector

Speaker

Output

Terminals

(Channels

3/4)

Input

RCA

Jacks

(Channels

3/4)

Status

Monitor

Switch

Settings

Input

Mode

Selector

Switches

and

©:

Set

the

“ST”

position

(center)

when

the

amplifier

used

4-channel

stereo

system.

L(MONO)

L+R

Set

the

(MONO)"

position

when

the

amplifier

used

for

one

channel

stereo

bridged

system.

L({MONO)

L+R

Set

the

"L+R"

position

when

the

amplifier

used

for

the

subwoofer

system

which

uses

the

right

channel

and

left

channel

signals

summed.

—

L(MONO)

L+R

Active

Dividing

Network

Selector

Switches

and

Set

the

"LP"

position

when

the

amplifier

used

for

the

low-pass

(sub-woofer)

system.

The

frequencies

higher

than

will

cut

(at

rate

per

octave).

Set

the

"HP"

position

when

the

3554

used

for

the

high-pass

(tweeter/midrange

and

subwoofer)

system.

The

frequencies

lower

than

will

cut

(at

rate

per

octave).

OFF

3554

Set

the

"OFF"

position

when

the

3554

used

for

the

regular

stereo

system

with

full-range

speakers.

The

full

bandwidth

will

output

without

cutting

the

high

low

frequencies.

pe,

OFF

Fixed/Variable

Input

Selector

Switches

and

©:

Set

the

"FIXED"

position

when

connecting

the

3554

other

Alpine

products.

This

position

sets

the

input

sensitivity

500

which

corresponds

the

pre-amp

output

Alpine

products.

r—

VARIABLE

FIXED

Set

the

"VARIABLE"

position

when

connecting

the

3554

non-Alpine

product

with

output

voltage

other

than

500

mV.

This

position

should

also

used

when

adjustment

input

sensitivity

required

obtain

certain

imaging

requirements

compensate

for

different

speaker

efficiencies.

ane

VARIABLE

FIXED

Input

Gain

Controls

and

©:

After

setting

the

Input

Select

Switches

and

the

"VARIABLE"

position,

rotate

the

Input

Gain

Controls

and

with

screwdriver

and

adjust

the

input

gain

the

point

where

there

maximum

volume

with

distortion.

Status

Monitor:

This

indicator

lights

green

when

the

power

on.

The

3554

has

built-in

protection

circuitry.

If,

for

some

reason,

this

protection

circuit

activated,

the

indicator

turns

orange.

this

happens,

turn

the

system

off,

find

the

cause

the

problem

and

remedy

the

situation.

This

includes

checking

all

your

connections

and

wiring.

the

indicator

remains

orange

when

the

system

turned

on,

consult

yourauthor-

ized

Alpine

dealer.

Note:

The

indicator

will

illuminate

orange

for

iew

seconds

when

the

power

turned

the

protection

circuit

will

activated.

This

normal.

3554

Characteristic

Curves

POWER

VS.

DISTORTION

CURVE

200

T.H.D.

(%)

“=

0.01

0.01002

0.05

0.1

20 50

100

OUTPUT

POWER

(W)

FREQUENCY

RESPONSE

CURVE

eee

O01

Coon

Coo

RESPONSE

(dB)

«6200

100s

«200

500

FREQUENCY

(Hz)

Connections

Insulation

Tubes

(INCLUDED)

Before

making

connections,

sure

turn

the

power

off

all

audio

components.

Insulation

tubes

for

the

speaker

leads

and

the

power

supply

leads

are

supplied

with

the

3554,

route

the

speaker

leads

and

the

power

supply

leads

separately

through

these

tubes.

Speaker

Output

Terminal

The

3554

has

two

sets

speaker

outputs

for

the

Front

and

Rear

speakers.

sure

observe

correct

speaker

output

connections

and

phasing.

the

stereo

mode

connect

the

right

speaker

output

the

right

speaker,

and

the

left

left.

Connect

the

positive

output

the

positive

speaker

terminal,and

the

negative

negative.

the

bridged

mode,

connect

the

left

positive

the

positive

terminal

the

speaker,

and

the

right

negative

the

negative

terminal

the

speaker.

not

use

the

speaker

(-)

terminal

commonly

for

the

right

and

left

speakers

connect

the

vehicle’s

chassis

ground.

Note:

not

connect

speaker

leads

together

chassis

ground.

3554

(INCLUDED)

Remote

Lead

(Blue/White)

e{C>

Ground

Lead

(Black)

Pas

Battery

Lead

(Yellow)

Ground

Lead

(Black)

Connect

this

lead

securely

clean,

bare

metal

spot

the

vehicle’s

chassis.

Verify

this

point

atrue

ground

checking

for

continuity

between

that

point

and

the

negative

(-)

terminal

the

vehicle’s

batiery.

Battery

Lead

(Yellow)

Connect

this

lead

directly

the

positive

(+)

terminal

the

vehicle's

battery.

not

connect

this

lead

the

vehicle’s

electrical

system.

Remote

Turn-On

Lead

(Blue/White)

Connect

this

lead

the

remote

turn

lead

your

head

unit.

;

Input

RCA

Jacks

Connect

these

jacks

the

line

out

leads

your

head

unit

using

optional

RCA

extension

patch

cords.

sure

observe

correct

channel

connections;

Left

Left,

Right

Right,

Front

Front,

and

Rear

Rear.

Three

simple

and

typical

system

combinations

are

illustrated.

For

wiring

connections,

carefully

the

instructions

provided

with

each

component.

3554

Precautions

iw)

Improper

wiring

connections

could

cause

damage

your

vehicle’s

electrical

system

and/or

the

3554

amplifier.

Carefully

the

wiring

instructions

this

manual.

Attaching

the

battery

lead

the

positive

(+)

terminal

the

battery

should

the

last

connection

after

all

other

connections

are

made.

Due

the

high

power

output

the

3554,

important

that

all

connections

are

clean

and

well

secured,

damage

could

result.

sure

that

the

3554

mounted

way

that

will

allow

for

free

air

circulation

and

heat

dissipation.

When

changing

fuses,

sure

replace

the

old

fuse

with

one

the

same

amperage.

Use

improper

fuses

can

lead

serious

damage

components.

Disassembly

Instructions

Removal

Bottom

Cover.

(1)

Remove

four

screws

marked

"as

shown

Figure

(2)

The

Bottom

Cover

will

removed

pulling

out

the

arrow

direction

shown

Figure

Removal

Amp

P.C.Board.

(1)

After

removal

the

Bottom

Cover,

remove

screws

marked

@".

Then,

the

Amp

P.C.Board

will

removed

from

heat tank

together

with

Rear

Chassis

and

RCA,

Output

Connector

and

Power

P.C.Board

shown

Figure

(2)

Remove

two

screws

marked

"MM

and

the

solders

located

two

placed

shown

Figure

(3)

After

removal

two

pieces

fuse,

remove

seven

screws

marked"

and

the

hooks

located

six

places

shown

Figure

(4)

After

the

above

procedures

are

completed,

RCA,

Output

Connector

and

Power

P.C.Board

ready

removed

from

Rear

Chassis

together

with

the

Main

P.C.Board.

Figure

BOTTOM

COVER

REMOTE

P.C.Board

RCA

P.C.Board

OUTPUT

CONNECTOR

P.C.Board

Figure

FUSE

HOOK

Figure

Block

Diagram

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IC501

Q525

(ORG

)

LD520-2

(ORG

}

Dc-pCc

CONVERTER

Tee!

FIOI

ET5OI

Ic50l

SWITCH

1BATT

515

T502

Fl02

GND

SWITCH

ET502

Q521

MUTE

SWITCH

Rew

9518,

0523

—-11—-

Jremote

3554

Indice

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