Akai GX-230 User manual

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X-230/230D

STEREO

TAPE

RECORDER/TAPE

DECK

OPERATOR’S

MANUAL

CEE, CSA,

UL,

and

LA

standard

models

are

not

equipped

with

a

Voltage

Selector.

Therefore,

voltage

conversion

is

not

necessary.

If

your

machine

corresponds

to

any

of

these

standards,

please

disregard

all

references

to

voltage

adjustment

throughout

this

manual.

CEE

Models

220V,

50

Hz

CSA

Models

120V,

60

Hz

UL

&

LA

Models

:

120V,

60

Hz

WARNING:

To

prevent

fire

or

shock»

hazard,

do

not

expose

this

appliance

to

rain

or

moisture.

MANUFACTURED

&

DISTRIBUTED

BY

AKAI

ELECTRIC

CO.,

LTD./AKAI

TRADING

CO.,

LTD./AKAI

AMERICA

LTD.

CONTROLS

INTRODUCTION

Your

ALL

GX

HEAD

unit

is

constructed

of

the

very

finest

materials

and

incorporates

the

very

latest

in

recording

and

playback

techniques.

This

model

employs

a

3-motor

system

including

an

AC

Servo

motor

for

direct

capstan

drive.

This

new

system

assures

perfectly

stable

motor

revolutions

and

tape

speed.

The

precision

mechanisms

of

this

machine

matches

the

famous

wear-free

GX

Head

character-

istics

for

unequalled

performance.

Thus,

with

proper

care,

your

unit

will

give

you

many

years

of

service.

We,

therefore,

urge

you

to

READ

THIS

MANUAL

CAREFULLY

prior

to

operation.

REEL

RETAINER

(Left)

SUPPLY

REEL

TABLE

HEAD

COVER

Houses

GX

Forward

Playback,

GX

Reverse

Playback,

and

Combination

GX

Recording/Erase

Heads.

TENSION

ARM/SENSING

POLE.

Provides

proper

tension

for

smooth

tape

travel.

Also

functions

as

a

sensing

pole

for

automatic

reverse

(Refer

to

Automatic

and

Manual

Reverse).

IMPEDANCE

ROLLER:

POWER

SWITCH:

TAPE

MONITOR

SWITCH

To

monitor

recorded

signals

or

for

playback,

set

to

TAPE

position,

and

to

monitor

program

source,

set

to

SOURCE

position.

Monitoring

during

recording

cannot

be

accomplished

when

using

the

DIN

Jack.

HEADPHONE

JACK

Accomodates

stereo

headphones

of

8

ohms

impedance.

MICROPHONE

JACKS

(Left/Right)

TAPE

SPEED

SWITCH:

VOLUME

CONTROLS

(Left/Right)

(GX-230D

OUTPUT

LEVEL

CON-

TROL)

Adjusts

output

level

at

playback

time.

TAPE

SELECTOR

SWITCH

LOW

NOISE:

Set

to

this

position

when

using

Low

Noise

Tape.

WIDE

RANGE:

Set

to

this

position

when

using

Wide

Range

Tape.

*

—

Scotch

#211

Low

Noise

Tape

is

considered

standard

for

this

machine.

The

use

of

regular

tape

is

not

recommended.

Set

to

Wide

Range

position

only

when

using

special

Wide

Range

Tape

of

a

grade

higher

than

Low

Noise

Tape.

AC

CORD.

UNIVERSAL

VOLTAGE

SELECTOR

(CEE,

CSA,

UL

and

LA

models

not

equipped

with

this

facility)

Offers

six

selections

of

AC

voltage

for

worldwide

operation.

(Refer

to

VOLTAGE

CONVERSION

procedure).

i

INDEX

COUNTER

AND

RESET

BUTTON

Provides

an

easy

reference

for

quickly

locating

positions

on

the

tape.

To

reset

to

0000",

depress

Reset

Button.

PINCH

ROLLER

Presses against

capstan

to

transport

tape.

TAPE

GUIDE

RECORDING

(REC)

KEY

Depress

this

key

and

the

PLAY

Key

simultaneously

to

effect

recording

mode.

REEL

RETAINER

(Right)

TAKE

UP

REEL

TABLE

REWIND

-a-a

KEY

Rewinds

tape

at

high

speed.

RECORDING

INDICATOR

LAMP

Lights

when

the

REC

Key

is

depressed.

STOP

EEH

KEY

Depress

to

stop

tape

travel.

TENSION

ARM/AUTOMATIC

STOP

LEVER

Provides

even

tension

for

smooth

tape

travel.

Also

functions

as

Automatic

Stop

Lever

(At

the

end

of

the

tape,

or

if

the

tape

is

accidentally

broken,

this

lever

drops,

activating

the

automatic

stop

mechanism

and

reel

movement

is

stopped).

MANUAL

REVERSE

BUTTONS

Depress

to

reverse

tape

direction

during

playback.

PLAY

KEY

Advances

tape

for

recording

or

playback

mode.

FAST

FORWARD

&-»-

KEY

Forwards

tape

at

high

speed.

MICROPHONE

INPUT

LEVEL

CONTROLS

(Left/Right)

Controls

microphone

input

volume.

Adjust

while

observing

VU

Meters.

LINE

INPUT

LEVEL

CONTROLS

(Left/Right)

Controls

line

input

volume.

Adjust

while

observing

VU

Meters.

«lll

]

Tiri

PAUSE

SWITCH

Depress

to

temporarily

suspend

tape

travel

during

recording

or

playback.

Especially

convenient

for

editing

tape.

Simply

depress

when

a

certain

portion

of

the

program

is

not

desired.

*

—

Pause

Control

does

not

function

during

Fast

Forward

or

Rewind

Mode.

CAPSTAN

VU

METERS

(Left/Right)

Indicates

recording

and

playback

levels.

Normal

recording

should

not

exceed

“Or

MU.

SPEAKER

JACKS

(Left/Right)

(Model

GX-230

only)

CYCLE

CHANGE

SWITCH

(CEE,

CSA,

UL

and

LA

models

not

equipped

with

this

facility)

Set

to

50

Hz

or

60

Hz

position

according

to

area

power

source.

DIN

JACK

Enables

inter-connection

with

an

external

amplifier

through

a

single

Din

connection

cord.

*

Monitoring

during

recording

cannot

be

accomplished

when

using

the

DIN

Jack.

LINE

INPUT

JACKS

Connects

to

outputs

of

external

source.

LINE

OUTPUT

JACKS

(Left/Right)

Connects

to

tape

inputs

of

external

amplifier

or

recorder.

OPERATING

PRE

TIONS

*

Your

machine

requires

constant

voltage

for

optimum

perform-

ance.

If

voltage

change

is

necessary,

refer

to

VOLTAGE

CONVERSION

procedure.

As

dirty

or

magnetized

heads

become

the

source

of

loss

of

sound,

sound

drop-out,

distortion,

and

other

recording

and

playback

failures,

the

heads

should

be

kept

clean

and

de-

magnetized

at

all

times.

Place

machine

on

a

flat

level

surface

and

operate

in

either

a

vertical

or

horizontal

position.

Do

not

place

unit

near

appliances

etc.

which

generate

noise.

Avoid

using

your

machine

in

extremely

hot

and

humid

or

dusty

places.

Do

not

block

the

ventilator.

For

clear

sound,

avoid

over-level

recording.

Normal

recording

is

^9

NU.

If

the

sound

sources

are

so

far

away

from

the

microphones

that

the

input

level

controls

must

be

turned

to

maximum,

some

hum

or

noise

will

inevitably

be

recorded.

A

test

recording

is

recommended

before

making

a

final

recording.

Scotch

#211

Low

Noise

Tape

is

standard

for

this

machine.

The

use

of

regular

tape

is

not

recommended.

Set

Tape

Selector

Switch

to

Wide

Range

position

only

when

using

special

wide

range

tape

of

a

grade

higher

than

low

noise

tape.

As

tapes

which

have

not

been

used

for

a

period

of

time

may

have

become

sticky,

run

tape

once

before

using.

Always

store

tapes

in

a

cool,

dry

place.

Proper

tape

tension

and

automatic

stop,

cannot

be

effected

if

the

tape

is

not

threaded

through

the

Tension

Arm/Automatic

Stop

Lever.

Refer

to

Tape

Loading.

If

your

machine

will

not

record

or

playback,

check

input

and

output

connections

and

controls

and

position

of

Pause

Switch.

Should

there

be

a

problem

with

your

machine,

write

down

the

model

and

serial

numbers

and

all

pertinent

data

regarding

warranty

coverage

as

well

as

a

clear

description

of

the

existing

trouble

and

contact

your

nearest

authorized

Akai

Service Station

or

the

Service

Department

of

Akai

Company,

Tokyo,

Japan.

VOLTAGE

AND

CYCLE

CONVERSION

(CEE,

CSA,

UL

and

LA

models

are

not

equipped

with

Voltage

and

Cycle

conversion

apparatus.)

VOLTAGE

pum

oltage

Selector

Plug

Fuse

Pn

Post

Your

machine

is

equipped

with

a

universal

voltage

selector

offering

six

selections

of

voltage

from

100V

to

240V

AC.

Voltage

is

preset

at

the

factory

according

to

destination.

However,

the

operator

is

requested

to

reconfirm

setting

and,

if

necessary,

readjust

as

follows:

(1)DISCONNECT

POWER

CORD

and

remove

the

Fuse

Post

by

screwing

in

direction

of

arrow.

(2)Remove

the

Voltage

Selector

Plug

and

reinsert

so

that

proper

area

voltage

shows

through

the

plug

cut-out.

(3)Change

fuse

to

correspond

with

fuse

post.

(Refer

to

standard

accessory

spare

fuse

tag

instructions

for

proper

fuse).

To

maintain

optimum

performance

and

prolong

the

life

of

your

machine,

it

is

important

that

the

line

voltage

be

held

within

1096

of

standard

area

voltage

CYCLES

Correct

tape

speed

cannot

be

attained

if

the

Cycle

Change

Switch

is

not

properly

positioned.

Set

to

50

or

60 Hz

position

according

to

area

power

source.

TAPE

LOADING

Place

a

full

reel

of

tape

on

the

Supply

Reel

Table

and

an

empty

reel

on

the

Take-Up

Reel

Table.

Thread

the

tape

as

illustrated

by

the

dotted

lines

in

the

figure.

Lock

reels

into

place

with

Reel

Retainers

provided

on

reel

shafts.

*

Be

sure

to

thread

tape

through

Tension

Arm/Automatic

Stop

Lever.

TAPE

SPEED

SELECTION

This

model

operates

at

7-1/2

and

3-3/4

ips

tape

speed.

Select

desired

speed

with

Tape

Speed

Switch.

Stereo

recording

time

using

an

1,800

ft.

tape

is

3

hrs.

at

3-3/4

ips

and

1-1/2

hrs.

at

7-1/2

ips.

4-TRACK

RECORDING/PLAYBACK

SYSTEM

This

model

employs

a

4-track,

2-channel

stereo

recording

and

playback

system.

STEREO

RECORDING

AND

PLAYBACK

STEREO

|

Track

1

B

Steene

Track

1

cS

2

R2—

2

E

R2-—

3

B

Stereo

RI

3

RI

=>

4

La

4

|

|

w=

SJ

[zou]

Stereo

recording

and

playback

requires

the

simultaneous

use

of

two

tracks.

The

first

stereo

recording

and

playback

takes

place

on

tracks

1

and

3.

The

second

playback

takes

place

on

tracks

2

and

4

after

the

machine

has

been

set

to

reverse

playback

mode

or

the

reels

have

been

inverted.

To

record

on

tracks

2

and

4,

invert

reels.

*

This

model

does

not

record

in

reverse

direction.

AUTOMATIC

&

MANUAL

REVERSE

PLAYBACK

This

model

features

automatic

and

manual

reverse

playback

which

eliminates

the

trouble

of

inverting

reels

by

hand.

For

automatic

reverse

(from

forward

to

reverse

playback),

simply

apply

about

a

3/A"

(2

cm)

piece

of

sensing

foil

to

the

outside

of

the

tape

at

desired

reversing

point.

For

manual

reverse

in

either

direction,

operate

Manual

Reverse

Buttons

at

any

time

during

playback.

DIRECT

FUNCTION

CHANGE

CONTRO

This

machine

features

direct

function

change

from

Play

or

Recording

mode

to

F.

Forward

or

Rewind

and

between

F.

Forward

and

Rewind.

i

*

Depress

STOP

Key

to

stop

F.

Forward

or

Rewind.

STEREO

PLAYBACK

Make

necessary

connections

as

shown

in

CONNECTING

DIA-

GRAM

and

load

a

pre-recorded

tape.

.

Turn

on

Power

Switch.

.

Set

Monitor

Switch

to

TAPE

position.

.

Select

tape

speed.

.

Depress

PLAY

Key

to

begin

playback.

.

Adjust

Volume

Controls

(GX-230D

Output

Level

Control)

and

external

amplifier

controls.

.

Depress

Manual

Reverse

Button

-æ

for

playback

of

tracks

2-4.

Because

Model

GX-230

is

equipped

with

a

built-in

amplifier,

a

pair

of

speakers

is

all

that

is

necessary

for

playback.

However,

this

model

can

also

be

connected

to

a

pair

of

speakers

through

an

external

amplifier

in

the

same

way

as

Model

GX-230D

(Refer

to

CONNECTING

DIAGRAM).

moogmomr»

Ez]

*

STEREO

RECORDING

Make

necessary

connections

as

shown

in

CONNECTING

DIA-

GRAM

and

load

a

tape

(New

tape

gives

best

results).

A.

Turn

on

Power

Switch.

B.

Select

tape

speed.

C.

Set

Tape

Selector

Switch

according

to

tape

being

used.

(Refer

to

Tape

Selector

Switch

under

CONTROLS).

D.

With

Reset

Button,

set

Index

Counter

to

“0000”.

(Provides

an

easy

reference

for

locating

positions

on

the

tape).

E.

Set

Tape

Monitor

Switch

to

SOURCE

position.

F.

Depress

Recording

(REC)

Key.

(Recording

Indicator

Lamp

will

light).

G.

Adjust

and

balance

input

level

with

appropriate

Input

Level

Controls.

H.

When

an

optimum

recording

level

has

been

determined,

while

holding

the

REC

Key

at

depressed

position,

depress

PLAY

Key

to

begin

recording.

.

Invert

reels

to

record

on

tracks

2-4.

x

Dual

Monitoring

(comparing

signals

being

recorded

with

source)

can

be

accomplished

by

switching

the

Tape

Monitor

Switch

to

and

from

TAPE

and

SOURCE

positions.

This

enables

more

precise

adjustment

of

input

level

for

professional

recording

results.

Caution:

Monitoring

during

recording

cannot

be

accomplished

when

using

the

Din

Jack.

*

For

Microphone

and

Line

Mixing,

connect

microphones

to

Microphone

Jacks

and

other

source

to

Line

Input

Jacks.

Adjust

microphone

input

with

Microphone

Recording

Level

Controls

and

line

input

with

Line

Input

Level

Controls.

ABSENTEE

RECORDING

(timer

recording)

By

using

an

external

timer,

absentee

recording

can

be

accomplished

with

this

machine,

Load

a

tape

for

recording,

avoiding

tape

slack.

Adjust

input

level

following recording

procedure

and,

with

the

Power

Switch

turned

ON

and

the

REC

and

PLAY

Keys

locked

into

recording

mode

positions,

set

timer,

following

manufacturer's

instructions.

If

timer

is

set

to

coincide

with

source

timing,

the

recorder

will

automatically

begin

recording

according

to

setting.

*

This

machine

features

Automatic

Stop

which

is

effected

at

the

end

of

the

tape

(The

Tension

Arm/Automatic

Stop

Lever

drops

and

the

automatic

stop

mechanism

is

activated

to

stop

reel

movement).

EAD

CLEANING

While

GX

Heads

do

not

require

a

great

deal

of

cleaning,

if

old

tape

which

has

been

spliced,

etc.

is

used,

head

cleaning

is

recommended.

It is

especially

important

that

the

heads

be

clean

prior

to

recording.

Remove

head

cover

and

clean

the

heads

with

a

cotton

swab

stick

which

has

been

dipped

in

Akai

Cleaning

Fluid

(from

Head

Cleaning

Kit

HC-500).

Also

clean

the

pinch

roller,

capstan

shaft,

and

tape

guides,

etc.

over

which

the

tape

travels.

*

|f

Akai

Cleaning

Fluid

is

not

available,

use

alcohol.

Do

not

use

other

chemical

cleaners

as

the

rubber

parts

will

deteriorate.

HEAD

DEMAGNETIZING

Normally,

the

steel

pole

pieces

which

form

part

of

the

recording

and

playback

head

become

slightly

magnetized.

The

effect

of

magnetization

is

considerable

drop-out

and

noise.

Therefore,

it

is

recommended

that

head

demagnetizing

be

performed

periodically.

This

can

be

accomplished

with

a

bulk

Head

Demagnetizer

by

bringing

the

prongs

of

the

demagnetizer

close

to

the

heads

and

making

several

small

circular

motions

over

all

head

surface

areas

as

well

as

the

head

housing.

*

Be

sure

to

cut

off

the

power

of

the

unit

prior

to

demagnetizing

the

heads.

Avoid

switching

the

demagnetizer

on

and

off

near

the

head

block

area

or

VU

Meters.

Do

not

use

magnetized

tools

in

the

vicinity

of

the

heads.

TAPE

SPLICING

AND

EDITING

Cut

tape

diagonally

with

an

overlap

so

that

the

ends

are

lined

up

(cutting

on

diagonal

eliminates

detection’

of

splice

in

recording).

Cover

aligned

ends

with

splicing

tape.

Press

firmly

exerting

pressure

to

secure

ends

evenly.

Trim

off

excess

splicing

tape,

cutting

into

tape

very

slightly.

This

eliminates

the

possibility

of

a

sticky

splice.

For

smooth

and

easy

tape

splicing,

Akai's

portable

tape

splicer,

Model

AS-3

is

recommended.

TAPE

ERASING

Any

signal

information

previously

recorded

on

a

tape

will

be

erased

automatically

as

a

new

recording

is

made

on

the

same

tape.

For

erasing

only,

thread

the

tape

and

set

machine

to

recording

mode.

No

plugs

should

be

connected

to

the

input

jacks

and

recording

input

level

controls

should

be

set

to

minimum.

TECHNICAL

DATA

Track

System

........

4

track

2

channel

stereo

system

Reel

Capacity

..

Up

to

7”

reel

TapeSpeed

..........

7-1/2

and

3-3/4

ips

(£0.7%)

Wow

and

Flutter

......

Less

than

0.06%

RMS

at

7-1/2

ips;

Less

than

0.08%

at

3-3/4

ips

.

30

Hz

to

23,000

Hz

(+3

dB)

at

7-1/2

ips

using

AKAI

LN-150-7

Tape.

30 Hz

to

19,000

Hz

(+3

dB)

at

3-3/4

ips

using

AKAI

LN-150-7

Tape.

Distortion:

2:

scans

eus

Less

than

1%

(1,000

Hz

“0”

VU)

Signal-to-Noise

Ratio

...

Better

than

60

dB

(measured

via

tape

with

peak

recording

level

of

+6

VU)

Frequency

Response

.

Erase

Ratio

«esee

Better

than

70

dB.

Bias

Frequency

zen

100

KHz

Heads.

«xe

a5

atre

(3):

One

GX

Forward

Playback,

One

GX

Reverse

Playback,

One

combination

GX

Recording/

Erase

Head

MOTORS.

caso

roti

ois

(3):

One

AC

Servo

Motor

for

capstan

drive,

Two

eddy

current

motors

for

reel

drive

Fast

Forward

and

Rewind

STILE

ore

eese

75

sec.

using

a

1,200

ft.

tape

Output

Jacks

........

Line

(2):

0.775V

("0'"

VU)

(Required

load

impedance:

more

than

20

K

ohms)

Phone(1):

30

mV

Speaker(2):

Continuous

power

output:

7

watts

per

channel

minimum

RMS

at

8

ohms

load

impedance

from

100

Hz

to

20,000

Hz,

both

channels

fully

driven

to

rated

per

channel

power

with

no

more

than

3?6

total

harmonic

distortion.

Input&acks

..:22—

2

ee

Microphone(2):

0.3

mV/4.7

K

ohms

Line

(2):

70

mV

Diti

Jaeke

i5

ede

.

0.5

V/3

mV

Semi

Conductors

GX-230:

Transistors

41,

Diodes

32,

ICs

2

GX-230D:

Transistors

41,

Diodes

28

U.S.A.

and

Canada

(CSA,

UL,

and

LA)

Models:

120V,

60

Hz

only;

CEE

Models:

220V,

50

Hz

only;

Other

Models:

100V

to

240V,

50/60

Hz

(Switchable)

..

GX-230:

120W;

GX-230D:

90W

Power

Requirements

...

Power

Consumption

Dimensions

..........

440(W)

x

395(H)

x

205(D)

mm

(17.3

x

15.6

x

8.1")

Weight:

esee

GX-230:

16.7

kg

(36.7

Ibs.)

GX-230D:

15.2

kg

(33.4

Ibs.)

Specifications

determined

with

Scotch

#211

tape

unless

other-

wise

noted.

For

improvement

purposes,

specifications

and

design

are

subject

to

change

without

notice.

STANDARD

ACCESSORIES

Empty!

RBBl

es

ntaa

ea

sueus

ecouter

COT

ERES

ERE

ente

veis

ns

1

Connection

Gold...

eessoceseeets

e

tette

nike

adalat

«d

1

USGS

s

cose

cocer

seus

CAVE

Ens

oae

E

IDEE

YES

1

set

Operators

Manwalh...gscdscwsee

ataca

wane

SON

ay

eaten

AGERE

1

*

Spare

fuses

not

included

with

CEE,

CSA,

UL,

and

LA

models.

CONNECTING

DIAGRAM

MODEL

GX-230

ONLY

O

apn

HA

8

w

SPEAKER

The

Din

Jack

can

be

used

instead

of

Line

Jacks.

This

enables

connection

with

amplifier

through

a

single

Din

Cord.

When

recording

using

Din

Jack,

adjust

input

with

MICROPHONE

INPUT

LEVEL

CONTROLS.

©

ke

Koo

e

Ee

TAPE

DECK

OR

RECORDER

RECORD

PLAYER

WITH

CRYSTAL

OR

CERAMIC

PICK-UP

STEREO

AMPLIFIER

ooo

o

ooooQ

RECORD

PLAYER

WITH

STEREO

TUNER

SPEAKER

SPEAKER

MAGNETIC

CARTRIDGE

MANUFACTURED

&

DISTRIBUTED

BY

AKAI

ELECTRIC

CO,

LTD.

AKAI

TRADING

CO,

LTD.

12-14,

2-chome,

Higashi-Kojiya,

Ohta-ku,

Tokyo,

Japan

AKAI

AMERICA

LTD.

2139

E.

Del

Amo

Blvd.,

Compton,

Calif.,

90220,

U.S.A.

TELEPHONE:

(213)

537-3880

TELEX:

67-7494

Printed

in

Japan

M02J7506257583