Akai GX-77 User manual

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4

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STEREO

TAPE.

DECK

:,

‘Remarques:

Opmerkingen:

Anmérkningar:

Anmerkungen:

Notas:

*

This

manual

is

applicable

to.

both

silver

and

black

panel

models.

*

Supply

reel

and

.tape.shown

in

photogsaph

not

included

in

standard

accessories.

*

Cemanuels

‘applique

aussi

aux

modéles

avec

panneaux

argent

et

noir.

*

La

bande

et

ja.bobine

sur

ta

photo

ne

sont

pas

comprises

dans

les

accessoires

standards.

:

Deze

gebruiksaanwijzing

is

van

toepassing

op

modellen.met

zilver

en

zwart

paneel..

De

afgebeelde

aanvoerspoel

met

tape

behoort

niet

tot

het

standaardtoebehoren.

*.

Bruksanvisningen

galler

bade

fér

modellen

med

silverpanet

och

modetien

med

mattsvart

pang}.

Matarspoten

och

bandet

pa

bilden

tillhdr

inte

standard

tillbehdren.

*

Diese

Betriebsanieitung

gilt

auch

fur

die

Ausfilhrung

mattsilber

und

mattschwarz.

Der

auf

dem

Foto

abgebildete

Ablaufbandspule

und

das

Band

sind.im

Standardzubehd:

nicht

enthaiten,

*

Este

manual

cubre

ambos

modelos,

el

de.panel-plateado

y

el

de

panel

negro.

*.

El

carrete

de

suministro

y

la

cinta

mostrados

en

ta

fotografia

no

estan

incluidos

como

accesorios

estandar.

aim

COS

.

rain

or

moisture.

Operator’

s

Manual..

Manuel

de

lutilisateur

Gebruiksaanwijzing.

MANUFACTURED.

&

DISTRIBUTED

BY

AKAI'E

AKA!

TRADING

CO.,LTD.

/AKAL

/AMERICA

LT:

CONTROLS

10.

11.

12.

13.

14,

15.

16.

17,

18.

19,

21,

POWER

Switch

Press

once

to

switch

on

the

GX-77

and

once

again

to

switch

off

the

GX-77.

*

The

REAL

TIME

COUNTER

and

the

standby

indicator

(POrd)

will

light

as

the

power

is

turned

on.

Supply

Reel

Tabie

Real

Stopper

Tension

Arm

Takes

up

the

tape

smoothly

and

prevents

sudden

tightening

of

the

tape.

Capstan

Head

Cover

Pull

the

bottom

towards

you

to

open.

REAL

TIME

COUNTER

and

RESET

Button

Displays

the

amount

of

tape

travel

in

real

time

(minutes

and

seconds)

up

to

99

minutes

59

sec-

onds

and

decreases

when

travelling

in

reverse.

Press

the

RESET

button

and

the

counter

will

revert

to

‘0000’.

*

When

200%

tape

(740m=2,400ft)

is

used

at

9.5cm/sec,

the

tape

counter

will

be

reset

to

‘0000°

once

99.59

is

exceeded.

Pinch

Roller

Presses

the

tape

against

the

capstan

during

playback

and

recording.

Tension

Arm

Takes

up

the

tape

smoothly

and

prevents

sudden

tightening

of

the

tape.

It

works

in

conjunction

with

the

auto

stop

mechanism,

Reel

Stopper

Take

Up

Reel

Table

TIMER

START

Selector

Use

during

absentee

recording

and

timed

playback.

Always

ensure

that

this

switch

is

at

OFF

posi-

tion

and

the

timer

start

mechanism

released

during

normal

recording

and

playback.

*

If

the

timer

start

mechanism

has

not

been

released

and

the

power

is

on

with

a

tape

loaded,

the

GX-77

will

automatically

go

into

either

the

recording

or

playback

mode.

Reverse

(REV)

SELECTOR

Set

the

REV

SELECTOR

to

one

way

(—)

recording

or

playback,

one

cycle

(

>)

recording

or

playback

or

continuous

{C>)

playback.

Headphone

(PHONES)

Jack

Plug

in

headphones

for

monitoring

recording

or

playback

with

headphones.

OUTPUT

Controt

Enables

simultaneous

adjustment

of

the

line

output

level

and

the

headphone

level.

*

This

cannot

alter

the

Digital

Bar

Meter.

Recording

Input

Controls

[REC-L,

REC-R}

Adjust

the

recording

input

level

and

the

balance

between

left

and

right

channels.

Adjust

REC-L

for

the

left

channel

and

REC-R

for

the

right.

MONITOR

Selector

Set

to

SOURCE

when

adjusting

the

recording

input

level

and

to

TAPE

when

monitoring

play-

back

or

monitoring

the

just

recorded

signal.

BIAS

Adjustment

(ADJUST)

Control

Set

to

the

type

of

tape

being

used

for

recording

and

adjust

within

+30%.

Recording

(REC)

MASTER

Control

Adjusts

the

overall

recording

input

level

independently

of

the

Recording

tnput

controls.

Useful

for

fade-in,

fade-out

recording

etc.

TAPE

Selector

Adjusts

to

the

type

of

tape

being

used

for

recording

or

playback.

Tape

selector

with

a

special

EE

(extra

efficiency)

position

for

the

high

performance

tapes.

TAPE

SPEED

Selector

Display

the

recording

input

and

playback

levels.

A

built-in

peak

hold

holds

maximum

levels

over

0

dB

for

about

one

second.

The

upper

meter

(L)

indicates

the

léft

channel

and

the

lower

(R)

indicates

the

right.

*

The

display

cannot

be

altered

by

the

OUTPUT

control.

23.

CUE/REVIEW

Lever

24.

27.

31,

32.

Press

this

lever

to

cue

in

the

beginning

of

a

song

from

fast

forward

or

rewind

during

playback.

Press

once

more

to

release.

*

f€nsure

this

lever

is

not

pressed

when

recording

or

playing

back.

LOADING

ROLLER

UP/DOWN

Button

Operation

Buttons

Recording

Button

(

@

REC)

and

indicator

To

record

forwards,

press

this

button

and

the

forward

button

(

»

}

simultaneously.

To

record

in

reverse,

press

this

button

and

the

reverse

buttan

(

<1

}

simultaneously.

*

The

indicator

will

light

during

recording

and

recording

standby.

PAUSE

Button

(

IE

}

and

indicator

Press

to

stop

tape

travel

temporarily

during

recording

or

playback.

*

The

indicator

will

light

during

the

pause

mode.

Reverse

Button

(

<)

(Press

this

button

for

reverse

playback

and

for

reverse

recording

press

this

button

and

the

record-

ing

button

(

@

REC)

together.

The

reverse

STANDBY/DIRECTION

indicator

will

light.

Forward

Button

(

>

)

Press

this

button

for

forward

playback

and

for

forward

recording

press

this

button

and

the

re-

cording

button

{

@

REC)

together.

The

forward

STANDBY/OIRECTION

indicator

will

tight.

Rewind

Button

(

<<

)

Press

to

rewind

the

tape

in

the

direction

of

the

arrows.

Stop

Button

{

mi)

Press

to

stop

playback,

recording,

fast

forward,

rewind

pause.

Fast

Forward

Button

(

>>

}

Press

this

button

to

fast

forward

the

tape

in

the

direction

of

the

arrows.

Note:

To

ensure

stable

operation

of

the

timer

start

mechanism,

please

allow

about

5

seconds

to

elapse

after

switching

the

power

on

and

before

pressing

the

operation

buttons,

STANDBY/DIRECTION

Indicators

{

~«

and

»

}

Indicate

standby

during

pause,

rewind

or

fast

forward.

During

playback

and

recording

indicate

the

direction

of

tape

travel.

REMOTE

Controt

Jack

Plugin

the

optional

Remote

Contro!

Unit

RC-21

for

remote

control

operation.

*

Please

use

only

the

remote

controt

unit

specified

above.

External

Power

Supply

Jack

(INPUT

DC

15V-200mA)

Plug

in

the

optional

AC

Adapter

MP-515.

This

enables

the

figures

on

the

tape

counter

to

be

re-

tained

even

after

the

power

has

been

turned

off.

Please

do

not

use

any

AC

adapter

other

than

the

MP-515

(sold

separately).

Power

Cord

LINE

IN

Jacks

*

These

are

the

line

input

jacks

for

recording

from

other

tape

decks

or

through

an

external

ampli-

fier.

LINE

OUT

Jacks

;

;

These

are

the

line

output

jacks

for

dubbing

to

another

tape

deck

or

for

monitoring

while

con-

nected

to

an

external

amplifier.

Loading

Roiler

Rises

up

during

tape

travel to

enable

recording

and

playback.

Sensing

Pins

When

the

sensing

tape

affixed

to

the

tape

reaches

these

sensing

pins,

during

auto

reverse

record-

ing

and

continuous

playback,

the

direction

of

tape

travel

is

reversed.

The

one

on

the

supply

reet

side

is

for

forward

to

reverse

and

the

one

on

the

take

up

reel

side

is

for

reverse

to

forward,

Head

Section

From

bottom

left

hand

side,

are

the

reverse

playback

GX

head,

recording

GX

head,

erase

head

and

tape

guide.

From

bottom

right

hand

side

are

the

forward

playback

GX

head,

recording

GX

head,

erase

head

and

tape

guide.

CONTROLS

COMMANDES

BEDIENINGSORGANEN

"

@

®

®

®

©

MANOVERORGAN

BEDIENUNGSELEMENTE

CONTROLES

®

@®

O

O®D

a

CONNECTIONS

Switch

off

all

the

components

before

connecting.

Insert

the

connection

plugs

firmly

into

the

connection

jacks.

Please

keep

plugs

and

jacks

clean.

Dirt

causes

noise

and

distortion.

When

using

a

timer

connect

this

deck’s

power

cord

into

either

the

amplifier’s

AC

outlet

or

directly

to

the

timer’s

switched

outlet.

Headphones

>»

Speaker

System

LEFT

LINE

OUT

RIGHT

LINE

OUT

LEFT

PLAY

RIGHT

PLAY

+

+

SPEAKER

SSS

oo

§

6

OB

88s

Turntable

Cassette

Deck

Tapes

Tape

Care

e@

Fingering

the

magnetic

surface

of

the

tape

causes

signal

dropout.

Particular

care

should

be

taken

with

open

reel

tapes.

e@

Recordings

cannot

be

made

on

the

leader

tape

at

the

beginning

and

end

of

the

tape.

Forward

the

tape

until!

there

is

no

feader

tape

in

the

head

path

before

recording.

@

Please

do

not

leave

tapes

loaded

on

the

deck

over

long

periods

of

time.

Remove

after

use,

replace

in

their

boxes

and

store

in

a

cool,

dry

place

away

from

units

producing

magnetic

fields

such

as

speakers

or

TVs.

e@

Long-period

storage

of

tapes

that

was

taken

up

in

a

fast

forward

or

rewind

mode

will

cause

damage

to

the

tape,

leading

to

unexpected

troubles

or

will

make

them

unfit

for

use.

There-

fore,

the

tapes

should

be

stored

in

a

condition

as

taken

up

in

an

orderly

manner

with

the

tape

traveling

at

the

fixed

speed

of

recording

or

playback.

However,

either

rewind

or

fast

forward

the

entire

tape

before

using

the

tape

after

storage.

Do

not

bend

or

force

the

tapes.

Faulty

reels

Can

cause

unstable

tape

travel

so

avoid

loose

or

warped

reels.

Tape

Recording

Time

Marketed

tapes

are

available

in

lengths

of

740m

(2,400ft),

550m

(1,800

ft)

and

370m

(1,200ft)

etc.

The

TAPE

SPEED

selector

on

this

deck

can

be

set

to

either

19

cm/sec.

(7-1/2

in.)

or

to

9.5

cm/sec.

(3-3/4

in.).

Please

refer

to

the

chart

following

for

the

length

of

recording

and

play-

ing

time

at

each

speed.

*

A

fast

speed

gives

good

wow

and

flutter

and

frequency

characteris-

tics

but

it

also

shortens

playing

time.

Tape

Length

740m

550m

370m

Tape

Speed

2400ft)

(1800ft)

(1200ft

)

ee

p

(

One-way

60

45

30

19em/sec

(7)4in)

Two-way

120

90

60

One-way

90

60

9.5em/sec

(3%

in)

Setting

The

Tape

Selector

Please

refer

to

the

chart

for

the

correct

TAPE

SELECTOR

settings

for

marketed

tapes.

k

eee

NORMAL

AKAI

LN,

WR

ec

eae

oc

The

standard

reference

tape

is

the

150%

(550m)

in

beled

type.

Each

tape

position

has

been

adjusted

for

the

reference

tape.

*

Please

set

the

BIAS

Adjustment

(ADJUST)

Control

to

‘0’

when

recording

with

tapes

designated

as

standard

reference

tapes.

4

as

Extra

Efficiency

(EE)

Tapes

3

The

TAPE

SELECTOR

has

a

position

(EE)

for

the

high

performance

Extra

Efficiency

tapes.

When

recording

with

EE

tapes,

set

the

TAPE

SELECTORto

EE

and

set

the

BIAS

ADJUST

control

to

“0”,

A

EXTRA

EFFICIENCY

GX

Head

When

compared

with

other

heads

the

GX

heads

in

this

deck

are

highly

efficient

with

their

decreased

magnetic

change

loss

ad

subsequent

corresponding

decrease

in

the

amount

of

compensation

to

the

equalizer

circuit.

This

decrease

in

compensation

can

thus

be

attively

used

to

improve

the

tape’s

magnetic

characteristics.

tn

particularthhe

compensa-

tion

for

high

frequency

characteristics

improves

the

high

frequency

high

level

recording.

Moreover

although

the

noise

inhermt

in

the

tape

and

the

built-in

amplifier

is

increased

by

the

equalizr

circuit,

the

amount

of

decreased

compensation

decreases

the

noise

tontributing

to

an

improved

signal

to

noise

ratio.

Setting

The

BIAS

Adjustment

(ADJUST)

Control

This

deck

has

been

supplied

with

a

BIAS

ADJUST

control

which

can

adjust

the

bias

by

+30%

at

each

tape

position.

Particularly

when

using

tape

at

the

normal

position,

please

refer

to

the

chart

below

to

set

the

BIAS

ADJUST

control.

Turning

the

BIAS

ADJUST

control

completely

to

the

left

or

right

will

change

the

bias

too

sharply

and

change

the

frequency

charac-

teristics.

Paxat[

wei

{0

|

xcs

nercnece

|

0

|

MAXELL

[UD

(REFERENCE)

[0

|

Px

5-008

|

0

dg,

|

PSA

teracreence

[0

LX35

90

ULH7

550

xe

ae

|

|

FP

puapr-ssopc

|

0.5

_

[pENON|

Dxsso

id

2.0

RECORDING

AND

PLAYBACK

SYSTEM

4

Track,

2

Channel

Recording

and

Playback

Systems

With

the

4

track

system

each

track

occupies

1/4

of

the

tape

width

and

with

the

2

channel

system

(GX-77)

2

tracks

are

used

to

record

and

playback

left

and

right

channels.

Tracks

1

and

3

are

used

for

the

left

and

right

channels

when

recording

in

forward

direction

and

2

and*4

are

used

for

the

left

and

right

when

recording

in

reverse

direction.

Thus

on

one

tape

three

can

be

2

channel

recording

and

playback

both

ways.

Tape

Loading

1.

Place

a

full

ree!

of

tape

on

the

supply

reel

table

and

an

empty

reel

of

the

same

size

on

the

take

up

reel

table.

Pull

the

reel

stoppers

at

the

tips

of

reel

table

shafts

outwards

and

turn

to

the

left

or

right

to

lock into

place.

AKAI

WR

150-

UD

(REF

XL

35-9

MAXELL

XL-ll

(E3

:

REFERENCE)

7

TDK

SA(E43:

REFERENCE)

'

GX35-90B

ERENCE)

'

LX35-90

oB

!

SONY

ULH7-550

an

oe

Scotch

=206

=

176

=

2000

DENON

DX-55C

Scotch

=213

1

Recording

Head

a

(Right)

Forward

recording

==>

Recording

Head

rack

Ke

BS

:

(Left)

‘

Track

3

Trach

Track

4

<==»

Reverse

recording

C7)

Recorded

track

2.

Unwind

about

60

to

70

cms

of

tape

and

then

thread

into

the

empty

reel

as

shown

in

the

diagram.

3.

Insert

the

end

of

the

tape

into

the

slot

in

the

hub

on

the

empty

4.

Gently

hold

the

tape

in

position

with

the

right

forefinger

and

wind

reel.

the

empty

reel

around

in

a

counterclockwise

direction

once

or

twice

until

all

the

tape

slack

has

been

taken

up.

This

new

mechanism

was

developed

to

put

aside

the

idea

that

loading

open

reel

tapes

is

time

consuming

and

difficult.

1.

Simply

thread

the

tape

under

the

tension

arms

and

onto

the

take

up

reel

as

described

before.

2.

Press

the

LOADING

ROLLER

UP/DOWN

button

and

the

auto

mechanism

will

take

the

tape

to

the

heads

and

begin

tape

travel.

3.

When

all

the

tape

has

been

transferred

to

the

take

up

reel

the

auto

loading

mechanism

will

release

as

auto

Stop

is

activated.

4.

Press

the

Stop

button

(mm)

and

then

the

LOADING

ROLLER

UP/DOWN

button

to

stop

tape

travel

and

retease

the

auto

loading

mechanism

midway.

Loading

mechanism

cannot

be

stopped

by

pressing

the

LOADING

Lone

moven

ROLLER

UP/DOWN

button

during

tape

travel.

mi

ere

With

auto

loading

it

takes

about

one

second

for

tape

travel

to

begin

a<

after

the

LOADING

ROLLER

UP/DOWN

button

has

been

pressed.

«<<

—O

|

Pe

PUSH

OFe

Recording

(Forwards)

Before

beginning:

®

is

the

tape

correctly

loaded?

(See

pages

6

and

7.)

1s

the

Power

Cord

connected?

(See

page

3.)

Is

every

thing

correctly

connected?

(See

page

3.)

Is

the

TIMER

START

selector

set

to

OFF?

1.

Press

the

POWER

switch

to

turn

on

the

power.

2.

Set

the

TAPE

SELECTOR

and

the

BIAS

Adjustment

(ADJUST)

control

to

the

tape

being

used.

3.

Set

the

TAPE

SPEED

selector

to

the

desired

speed.

4.

Set

the

MONITOR

selector

to

SOURCE.

5.

Adjust

the

balance

between

the

left

and

right

channels

with

the

Record-

ing

Input

controls

(REC-L

and

REC-

R)

and

then

the

overall

recording

input

fevel

with

the

Recording

(REC)

MASTER

control.

6.

Press

the

REC

(@)

and

PAUSE

(

BE)

buttons

for

recording

stand-

by.

7.

Press

the

RESET

button

and

set

the

REAL

TIME

COUNTER

to

‘0000’.

8.

Press

the

Forward

(

™

)

button,

the

tape

will

travel

forwards

and

record-

ing

begin.

9.

Set

the

MONITOR

selector

to

T

APE

for

simultaneous

monitoring

and

adjust

the

recording

level

while

checking

the

recording.

10.

Press

the

Stop

(

mi)

button

to

re-

lease.

Cutting

Out

The

Commercials

During

FM

Recording

1.

Set

the

MONITOR

selector

to

SOURCE

before

the

commercial

begins

and

monitor

the

source.

2.

Press

the

PAUSE

(

§/§f

)

button

as

the

commercial

begins

to

stop

tape

travel

while

keeping

the

deck

in

the

recording

mode.

Setting

The

Recording

Input

Level

Please

adjust

the

recording

level

for

a

good

signal

to

noise

ratio.

If

the

recording

level

is

too

low,

noise

will

result

and

if

too

high,

distortion

will

increase.

1.

Set

the

MONITOR

selector

to

TAPE

while

recording.

(Simultaneous

Monitoring).

2.

The

Digital

Bar

Meter

now

indicates

the

level

being

recorded

onto

the

tape.

Watch

the

Digital

Bar

Meters

and

adjust

the

balance

be-

tween

left

and

right

channels

with

the

Recording

Input

controls

(REC-L

and

REC-R)

and

the

overall

recording

input

level

with

the

Recording

(REC)

MASTER

control.

3.

Refer

to

the

illustrations

on

the

right.

This

adjustment

should

be

sufficient

for

normal

use

but

there

are

variations

in

the

recording

sensitivities

of

tapes.

We

advise

you

to

Monitor

simultaneously

the

sound

being

recorded

through

head-

phones,

etc.

to

adjust

the

recording

level

correctly.

The

GX

heads

featured

in

this

deck

decrease

loss

during

recording

and

playback

to

give

recording

without

distortion

when

wide

dy-

namic

range,

high

performance

tapes

are

used

in

particular

even

if

O

dB

is

occasionally

exceeded.

Monitor

simultaneously

through

the

headphones

to

raise

the

recording

level

until

just

before

distortion

becomes

noticeable,

in

order

to

widen

the

dynamic

range

for

record-

ing

with

a

good

signal

to

noise

ratio.

Simultaneous

Monitoring

Use

this

method

to

check

the

quality

of

recording

during

recording.

tt

will

help

to

record

important

programs

well

and

to

avoid

the

distor-

tion

produced

when

the

input

level

is

too

high.

Line

Amplifier

@)

Recording

Equalizer

Amp

Erase

Head

Add

On

Recording

During

playback,

if

the

REC

(

@)

button

is

pressed

along

with

the

Forward

(

»)

or

the

Reverse

(

«)

button

recordings

can

be

made

without

interrupting

tape

travel.

Recording

GX

Head

3.

When

the

commercial

finishes

press

the

Forward

(

»

)

button

to

resume

recording.

4.

Use

also

when

jumping

tracks

while

recording

records.

Lal

i—|

||

—4—f-

||

|

——

Qa

’

-e0

S

0

Level

is

too

high.

—

Distortion

appears.

@

Set

to

the

MONITOR

selector

to

SOURCE

to

monitor

the

recording

input

signal.

(Routes

1

and

2

on

the

diagram)

@

Set

the

MONITOR

selector

to

TAPE

to

monitor

what

is

actually

being

recorded

on

the

tape.

(Routes

1

and

3

on

the

diagram)

Monitor

Selector

Line

Output

Jack

Playback

Headphone

Jack

Amp

Head

Playback

GX

Head

Direction

of

Tape

Travel

—>

Playback

(Forwards)

Before

beginning:

®

Is

the

tape

correctly

loaded?

(See

pages

6

and

7.}

®

Is

the

Power

Cord

connected?

e

ls

everything

correctly

connected?

(See

page

3.)

»

Is

the

TIMER

START

selector

set

to

OFF?

1.

Press

the

POWER

switch

to

turn

on

the

power.

2.

Set

the

TAPE

SELECTOR

for

the

tape

being

used.

3.

Set

the

TAPE

SPEED

selector

to

the

speed

at

which

the

recording

was

made.

5.

Press

the

RESET

button

and

set

the

REAL

TIME

COUNTER

to

‘0000’.

4.

Set

the

MONITOR

selector

to

TAPE.

6.

Press

the

Forward

(

™

)

button,

the

tape

will

travel

and

playback

will

begin.

7.

Adjust

the

headphone

volume

and

Output

to

the

pre-main

amplifier

(or

receiver)

with

the

OUTPUT

control.

8.

Tape

travel

can

be

temporarily

stop-

ped

by

pressing

the

PAUSE

(

§f)

button.

Press

the

Forward

(

™

}

but-

ton

to

resume

playback.

9.

Press

the

Stop

(

@™)

button

to

re-

lease.