Akai Am-m939 User manual

oRte

Milli

-AKAI-01083

DIGITAL

INTEGRATED

AMPLIFIER

psd

atetiiyal

1~17

Francais

19~35

i

37-53

Pagina

55-~71

Pagina

73~89

1033

Nay

This

is

the

Akai

Digital

Integrated

Amplifier

Use

the

Akai

amplifier

in

combination

with

the

other

components

in

the

Akai

Midi-series

and

you

-will

have

an

excellent

hi-fi

system.

Features

@

Dual

pole

DC

servo

power

amplifier

with

open

loop

circuit

®

Optical

and

coaxial

digital

interface

connection

system

for

CD

player

and

DAT

deck

(Page

3,

13)

@

2

times

over

sampling

digital

filter

incorporating

D/A

converter

for

compact

disc

and

DAT

cassette

playback

Microcomputer

controlled

function

controls

Motor

driven

volume

control

DIRECT

OPERATION

switch

(Page

7,

14)

REC

MODE

SELECTOR

switch

(Page

10,

11)

14)

2-sets

of

speaker

connections

(Page

7,

15)

Exclusive

processor

input

and

output

jacks

and

graphic

equalizer

recording

jacks

(Page

1

2)

e

Electronic

speaker

protection

system

with

muting

circuit

(Page

15)

@

Loudness

switch

and

subsonic

switch

(Page

1

4)

®@

Remote

control

function

(Page

4)

Table

of

contents

Warning

's3:sis5viccetuty

tected

alee

eusee

1

What

you

should

know

to

protect

yourself.......

2

Before

using

the

Akai

amplifier

.................

3

PIACEMENL.

oo

ob

dtc

tien

wsleeenloe

ape

irons

3

On

the

Akai

CD

player

connection

............

3

On

the

wireless

remote

control

unit..........

wee

4

Making

the

right

connections......

Seales

a

eiel

vine

5—6

GCOntrolSs.

co

5

iwc

suet

tee

aie

ewe

Setar

7

Let’s

enjoy

muSIC.............

0.

cece

eee

ee

eee

8-9

L6USTOCOM

i.

hu

Ri

sed

odes

ning

See

ede

28

a

10

Tape

dubbing..............

0c

cece

eee

eee eee

11

Expanding

Your

Hi-Fisystem

............

12-13

Graphic

equalizer

and

turntable

connections.

12

DAT

deck

connections...............

ae

13

Operation

details.................00-----

14-15

Protection

circuit............

0... cece

eee

15

The

speaker

system...........0...0

eee

15

Problem?

Let’s

check

............0000eeeeeeee

16

Specifications

.17

Super

bass,

bass

and

treble

tone

controls

(Page

WARNING

.

To

prevent

fire

or

shock

hazard,

do

not

expose

this

appliance

to

rain

or

moisture.

Power

requirements

Power

requirements

for

electrical

equipment

differ

from

area

to

area.

Please

ensure

that

your

machine

meets

the

power

requirements

in

your

area.

If

in

doubt,

consult

a

qualified

electrician.

220

V,

50

Hz

for

Europe

except

UK

240

V,

50

Hz

for

UK

and

Australia

What

you

should

know

to

protect

yourself

_

Watch

out!

You

might

get

an

electric

shock

@

Never

touch

the

plug

with

wet

hands.

@

Always

pull

out

by

the

plug

and

never

the

cord.

@

Only

let

a

qualified

professional

repair

or

reassemble

the

Akai

Amplifier.

An

unauthorized

person

might

touch

the

internal

parts

and

re-

ceive

a

serious

electric

shock.

e@

Never

allow

a

child

to

put

anything,

especially

metal,

into

the

Akai

Amplifier.

Let’s

protect

the

Akai

Amplifier

too.

@

Use

only

a

household

AC

power

source.

Never

use

a

DC

power

source.

@

Make

sure

that

the

power

consumption

of

each

component

does

not

exceed

the

wattage

speci-

fied

on

the

rear

panel.

e

|f

water

is

spilled

on

the

Akai

Amplifier,

discon-

nect

it

and

call

your

dealer.

@

Make

sure

that

the

Akai

Amplifier

is

well

ventilat-

ed

and

away

from

direct

sunlight.

Be

careful

not

to

block

the

side

ventilator

of

the

Akai

Amplifier.

@

To

avoid

damages

to

the

internal

circuits

and

the

external

surface,

keep

away

from

heat

(stoves,

etc.)

@

Avoid

using

spray

type

insecticide

near

the

Akai

_

Amplifier.

It

can

damage

the

finish

and

might

ignite

suddenly.

@

To

avoid

damaging

the

finish,

never

use

alcohol,

paint

thinner

or

other

similar

chemicals

to

clean

the

Akai

Amplifier.

@

Place

the

Akai

Amplifier

on

a

flat

and

solid

surface.

©

If

you

don’t

plan

to

use

the

Akai

Amplifier

for

a

long

period

of

time,

disconnect

the

power

cord.

To

enjoy

the

Akai

Amplifier

for

a

long

time,

please

read

this

operator's

manual

thoroughly.

3

Before

using

the

Akai

Amplifier

Placement

Stack

the

Akai

Midi

series

components

as

shown

in

the

illustration.

If

you

wish

to

change

this

order,

always

make

sure

that

there

is

another

component

separating

the

amplifier

and

cassette

deck.

The

tuner

and

CD

player

should

also

have

another

component

be-

tweenthem.

—

When

installing

the

components

Use

an

audio

rack

which

has

heat

radiation

holes.

eee

Seooggoua|s]—[

..

[2

|

Interference

—

This

amplifier

has

a

D/A

converter

for

CD

and

DAT

cassette

playback.

If

there

is

any

interference

during

TV

reception

,

turn

OFF

the

power

switch

of

the

amplifier

if

you

are

not

using

it.

Notes

for

connection

and

optical

terminals

®

Connect

the

plug

firmly,

with

it’s

printed

face

up.

@

When

connecting

and

disconnecting

the

cable,

pull

by

the

plug

not

the

cable.

@

Keep

the

plug

and

inside

of

the

terminals

clean.

Do

not

scratch

the

top

of

the

cable.

@

Replace

the

terminal

caps

when

the

terminals

are

not

in

use.

‘

@

Do

not

bend

the

cable.

®

If

you

are

winding

the

cable,

loops

with

a

15

cm

diameter

or

more

are

recommended.

On

the

Akai

CD

player

connection

Use

the

optical

fiber

cable

provided

with

the

CD

player

for

connections

Before

connecting

@

Turn

off

all

the

components.

@

Remove

the

terminal

caps

from

the

CD

OPTICAL

terminal

of

the

Akai

amplifier

and

the

DIGITAL

OUT

OPTICAL

terminal

of

the

Akai

CD

player.

@

Do

not

loose

these

terminal

caps.

The

terminal

caps

will

protect

these

optical

terminals

from

dust.

@

Do

not

make

connections

to

OPTICAL

terminals,

COAXIAL

jacks

and

the

CD

(L/R)

PIN-jacks

at

the

same

time.

This

will

result

in

the

OPTICAL

and

COAXIAL

input

signals

being

cut

automatically.

Optical

fiber

cable

(included

with

the

CD

player)

Printed

face

Insert

Optical

fiber

cable

On

the

wireless

remote

control

unit

The

wireless

remote

control

unit

can

be

used

to

control

all

the

operations

on

the

following

Akai

Midi

series

components:

Tuner

operating

buttons

TAPE

deck

operating

buttons

WIRELESS

TE

CONTROL

RC-S930

AKAI

Loading

the

batteries

|

>

Push

the

release

lever

while

pulling

the

bat-

tery

compartment

cover

to

open.

e

2)

insert

two

1.5

V

(R6,

AA

SUM-3

or

equivalent

size)

dry

batteries,

according

to

the

polarity

.

guides.

3]

Replace

the

cover.

e

AT-M739/L

Tuner,

AM-M939

Amplifier,

CD-M939

CD

player

and

GX-M959W

Cassette

deck.

Transmitting

window

Amplifier

operating

buttons

CD

player

operating

buttons

Notes

on

the

remote

control

operation

and

batteries

Please

read

the

information

printed

on

the

dry

batteries.

Do

not

use

the

remote

contro!

unit

near

fluores-

cent

lamps

which

may

shorten

the

operation

range

of

the

remote

control

unit.

As

the

strength

of

the

remote

control

unit's

bat-

teries

become

depleted,

the

operation

range

of

the

remote

control

will

become

shorter.

In

this

case,

the

batteries

should

be

replaced

with

new

ones.

If

you

aren’t

planning

to

use

the

remote

control

unit

for

a

long

period

of

time,

take

the

batteries

out.

When

replacing

the

batteries,

always

clean

all

the

terminals

with

a

dry

cloth

and

replace

both

batteries

at

the

same

time.

Do

not

use

any

batteries

other

than

those

recommended.

Making

the

right

connections

Before

connecting

@

Turn

off

all

the

components

before

connecting.

®

Connect

the

power

cord

last.

@

Make

sure

that

you

connect

the

white

PIN-plug

to

the

left

(white)

jack

and

the

red

PIN-plug

to

the

right

(red)

jack.

@

Connect

everything

securely.

Loose

connec-

tions

can

lead

to

distortion.

@

To

prevent

damage

to

the

cords,

connect

and

disconnect

by

holding

the

plug

and

not

the

cord.

@

Make

sure

that

the

power

cords

and

the

connec-

tion

cords

do

not.get

tangled

with

each

other.

This

can

lead

to

distortion.

@

if

your

turntable

has

a

ground

wire,

connect

it

to

the

Akai

amplifier’s

ground

terminal

(7}7)

securely.

AUX/DAT

REC

and

PLAY

jacks

These

are

auxiliary

jacks.

Connect

such

compo-

nents

as

a

2nd

DAT

deck

or

cassette

deck

to

these

jacks.

CD

and

DAT

PIN-jacks

Connect

the

CD

player

and

the

DAT

deck

to

these

jacks

with

the

conventional

PIN-plug

cords.

When

these

jacks

are

being

used,

the

CD

and

DAT

OPTI-

CAL

terminals

and

COAXIAL

jacks

are

cut

auto-

matically.

*

For

digital

interface

connection

use

the

OPTI-

CAL

terminals

or

COAXIAL

jacks.

PHONO

and

PROCESSOR

jacks

Connect

the

Akai

turntable

to

the

PHONO

jacks

of

the

Akai

amplifier.

Connect

the

Akai

graphic

equalizer

or

surround

processor

to

the

PROCESSOR

jacks

of

the

Akai

amplifier.

*

Refer

to

the

operator’s

manual

of

the

turntable

and

the

graphic

equalizer,

etc..

Ground

terminals

If

your

turntable

has

a

ground

wire,

connect

it

to

this

terminal

securely.

AM

loop

antenr

FM

Antenna

Right

channel

speaker

system

Tuner

CD

player

SYNCHRO

CORD

Cassette

Deck

LINE

OUT

Important!

The

illustrated

power

plugs

are

intended

for

general

reference.

The

power

plug

used

in

your

country

may

differ

from

the

illustration.

(Exam-

ple:

U.K.,

Australia,

U.S.A.,

Europe

etc.)

To

household

AC

outlet

A

SPEAKER

L

©

O

pity

Left

channel

speaker

system

SPEAKERS

terminals

Be

sure

to

connect

the:

+

wires

to

the

+

terminals

(red);

—

wires

to

the

—

terminals

(black);

Left

speaker

to

the

Left

(L)

terminals;

and

Right

speaker

to

the

Right

(R)

terminals.

How

to

connect

the

speakers

Strip

off

a

1cm

length

of

vinyl

covering

from

the

end

of

the

speaker

cord.

Loosen

the

Red

and

Black

speaker

terminals

by

turning

them

counter-clockwise.

(These

terminals

cannot

be

removed.)

0

Q

8

Twist

the

speaker

wires

firmly,

then

insert

them

through

the

opening

of

the

speaker

terminals

guards.

4)

Turn

the

terminals

clockwise

to

securely

fasten

the

cords.

IMPORTANT:

Do

not

cross

connect

speaker

sys-

tems.

Use

either

the

A

terminals

or

B

terminals

for

a

pair

of

speakers.

Do

not

connect

one

speaker

to

an

A

terminal

and

the

other

to

a

B

terminal.

On

the

required

speaker

impedance

When

using

one

pair

of

speakers:

Turn

one

of

the

A

or

B

SPEAKERS

switches

to

on.

Connect

speakers

of

6

to

16

ohms

imped-

ance.

:

When

using

two

pairs

of

speakers:

Turn

both

the

A

and

B

SPEAKERS

switches

to

on.

Connect

speakers

of

12

to

16

ohms

imped-

ance.

Refer

to

the

markings

on

the

amplifier’s

rear panel.

Power

cord

Connect

this

cord

to

the

Akai

tuner’s

SWITCHED

AC

OUTLET

or

directly

to

a

household

AC

outlet.

On

the

PROCESSOR

IN/OUT

and

G.E.

REC

jacks

This Akai

amplifier

is

equipped

with

special

PROC-

ESSOR

jacks

for

connection

to

a

graphic

equalizer

or

audio

processor.

Remove

the

pins

of

these

jacks

only

when

connect-

ing

one

of

these

accessories

and

keep

them

ina

safe

place.

Do

not

lose

these

pins.

Refer

to

page

12.

DIGITAL

OUT

COAXIAL

jack

Connect

the

DAT

deck’s

DIGITAL

INPUT

jacks

or

a

D/A

converter

which

has

a

digital

interface

circuit.

Connection

can

be

made

with

a

coaxial

PIN-piug

cord

such

as

a

video

connection

cabie

available

in

most

Hi-Fi

stores.

Refer

to

page

1

3.

7

Controls

9

@¢000

©

t

POWER

Indicator

Indicates

the

power

is

turned

on.

Also

indi-

cates

the

speaker

protection

circuit

opera-

tion.

When

the

speaker

protection

system

is

engaged,

the

indicator

will

be

red.

POWER

Switch

To

turn

the

Akai

amplifier

on

and

off.

Remote

control

receiver

For

remote

control

operation.

BALANCE

Control

To

adjust

the

left

and

right

channel!

balance.

A/B

SPEAKERS

Switches

and

Indicators

To

select

the

speaker

system.

DIRECT

OPERATION

Switch

To

select

the

playback

operation

mode

of

the

Akai

amplifier.

SAMPLING

FREQUENCY

Displays

(44

kHz/48

kHz)

Shows

which

digital

input

signal

has

been

selected

when

using

the

digital

interface

con-

‘nections.

44

kHz:

CD

player’s

signal

is

selected.

48

kHz:

DAT

deck’s

signal

is

selected.

@

@@82@6606

©

VOLUME

(—dB:

minus

decibel)

Control

To

adjust

the

volume

level.

The

O

dB

(zero

decibel)

position

is

the

maximum

volume

of

the

amplifier..

MUTING

Switch

and

Indicator

To

reduce

volume

instantly

during

playback

without

using

the

VOLUME

control.

SUBSONIC

Switch

(ON

=

/OFF

=

)

To

turn

the

subsonic

filter

on

and

off.

LOUDNESS

Switch

(ON

—

/OFF

™

)

For

instant

compensation

of

tone

setting

at

low

volume.

Input

select

buttons

and

Indicators

To

select

the

playback

source

you

want

to

listen

to.

REC

MODE

SELECTOR

Switch

(PROCES-

SOR/OFF/SOURCE/DIGITAL)

For

recording

operation.

ror

controls

(SUPER

BASS/BASS/TRE-

BLE

To

adjust

the

super

bass

note

(super

bass),

bass

note

(bass)

and

high

note

(treble)

levels.

Headphones

(PHONES)

jack

For

headphone

listening.

Let’s

Enjoy

Music

Set

the

following

controls

before

~

VOLUME

control

.

Minimum

(—

oo)

turning

on

the

power

of

your

BALANCE

control

Center

amplifier

REC

MODE

SELECTOR

LOUDNESS

switch

SUBSONIC

switch

Tone

controls

Basic

Operation

for

digital

source

playback

Use

the

optical

or

coaxial

cables

to

connect

the

CD

player

or

the

DAT

cassette

deck

to

the

Akai

ampli-

fier.

For

compact

disc

and

DAT

cassette

playback

Depress

the

POWER

switch

to

turn

on

the

power.

Select

the

speaker

system

for

playback

with

the

A

and

B

SPEAKERS

switches.

Press

the

appropriate

button

according

to

how

the

speaker

system

is

connected.

Set

the

DIRECT

OPERATION

switch

to

DIGI-

TAL.

Press

the

CD

or

the

DAT

button,

depending

on

which

source

you

want

to

listen

to,

as

fol-

lows:

Press

the

CD

button

for

compact

disc

play-

back.

The

44

kHz

display

wiil

light.

Press

the

DAT

button

for

DAT

cassette

play-

back.

The

48

kHz

display

will

light.

Playback

a

compact

disc.

Adjust

the

VOLUME

control

to

suit

your

taste.

Note

When

the

DIRECT

OPERATION

switch

is

set

to

DIGITAL,

the

tone

controls

and

balance

control

are

ineffective.

Basic

Operation

for

digital

source

playback

Depress

the

POWER

switch

to

turn

on

the

power.

Notes

@

When

the

DIRECT

OPERATION

switch

is

set

to

SOURCE,

the

tone

controls

and

balance

control

are

ineffective.

:

@

When

using

the

optional

graphic

equalizer,

set

the

DIRECT

OPERATION

switch

to

OFF.

Select

the

speaker

system

for

playback

with

the

A

and

B

SPEAKERS

switches.

:

Press

the

appropriate

button

according

to

how

the

speaker

system

is

connected.

Set

the

DIRECT

OPERATION

switch

to.

SOURCE.

Press

the

input

select

button

of

the

source

you

want

to

listen

to

as

follows:

For

compact

disc

playback

Press

the

CD

button.

For

DAT

cassette

playback

Press

the

DAT

button.

For

record

playback

Press

the

PHONO

button.

For

cassette

playback

Press

the

TAPE

button.

For

radio

listening

Press

the

TUNER

button.

For

auxiliary

source

playback

Press

the

AUX

button.

Playback

a

compact

disc.

Adjust

the

VOLUME

control

to

suit

your

taste.

Akai AM-M939 User manual

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