Manual Akai GX-221 (page 2 of 17) (English)

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STEREO

TAPE

REGORDER

OPERATOR'S

MANUAL

THIS

MANUAL IS ALSO

APPLICABLE TO

MODEL

GX.221D STEREO

TAPE

DECK.

MANUFACTURED & DISTRIBUTED BY

AKAI

ELECTRIC

CO., LTD./AKAI TRADING

CO., LTD./AKAI

AMERICA LTD.

,,,ÀKAr,,

GLASS & CRYSTAL FERRITE

HEAD

Akai has equipped this

model with its

new

and amazing

Glass &

Crystai

Ferrite

Recording and Playback

Heads to bring

you

unequalled

open reel

high fidelity

sound.

With the

Glass

& Crystal

Ferrite

Head, superbly wider

frequencies, with

clear

highs

can

be recorded

ail their

true fideiity covering

25,000 Hz with

low

noise tape.

In other

wotds,

with

this

completely

new

Glass

& Crystal

Ferrite

Head, high

dynamic range and

excellent

signal-to-noise

ratio are achieved.

The

secret

of this success

lies

the

head

materials, superior

processing

technique

and the focused-field

recording systern-

The core of this

quality

head

is made

single crystal

ferrite and is mounted

and

set in

glass.

The

superior

high range

characteristics are

contributable to the

structure of the

head

gap

which

focuses

the

magnetic

field into a

sharp oblong

radius. This

focused-field recording

system

minimizes

high frequency

loss,

eliminates undue

equalization

and

achieves a wider dynamic

range.

INDEX

Controls

vottage&cycleco.u.rrion

:...:. :.. :

:. :.........

Tape Speed Selection

Fast Forward &

Rewind

Automatic Stop & Shut-Off

PauseControl....

Operating

Precautions

For Better

Recording Resuits

Sound Monitoring

Tape

Selector

Switch

Pilch Wheel & Capstan Cleaning

Head Demagnetizing

How To Use The Dia

Jack

Tape Erasing

ConnectionsForPlayback

,.....

Tape Loading )

4-TrackRecording/PlaybackSystem

.,,.1

PlaybackOfPre-RecordedTape

......,

Automatic&ManualReversePlayback .. .

ConnectionsForRecording..... .,,...10

RecordingUsingMicrophones.

...,....11

RecordingFromAnExternalAmplifiei . . .,, . .1:

RecordingFromATurntable,.,,,....lj

TapeDubbin1....

,....11

Sound-On-SounCRecordin1.... . ....11

Playback With Model GX-221D Tape Deck , .

. , .13

TechnicalData.. .......14

StandardAccessories

....15

CEE,

CSA and UL Standard models

are

not equipped

with

Voltage

Selector

a,nd

Cycle Conversion Switches.

Therefore,

voltage and

cycle conversion is not neces-

sary. If

your

machine corresponds to any

of these

standards,

please

disregard

all references to voltage

and cycle adjustment

throughout this manual.

CEE Models : 220 Y

,50

Hz.

;r ill3:[

',l13J;'23i;

CONTROLS

INDEXCOUNTER&RESETBUTTON

25. RECORD/PLAYBACKLEVER

For use in

locating

positions

on the

tape.

For effecting

playback

or recording

mode.

For

playback,

set

PLAY

position.

For recording,

rvhile depressing

Recofding

2. PINCH

WHEEL Safety

Button, set

to REC

position.

PÍesses against

capstan

to transport

tape.

26.

FAST FORWARD/REWIND

LEVER

CAPSTAN

For

effecting fast forward or

rewind mode

(transports

tape at

Transports tape.

high

sPeed).

4. SUPPLYREELTABLE

27.

PAU§ELEVER

Convenient

for

temporarily

suspending tape

movement during

BUILT-IN SPEAKER

recording or

playback.

To release, depress Start

Button.

6. SUPPLYREELRETAINER

28. STARTBUTTON

pull

tip

retainer outward

and

turn to

left or right to

firmly

Releases Pause Lever.

lock

reel into

place'

29.

'HUT-.FF

swrrcH

CYCLE CONVERSION

SWITCH

(A)

This srvitch

is linked to the Automatic Stop/Shut-Off

Lever.

Set to 50

t-{z or

Hz according

ro area

power

source.

For

Set

STOP

position

for

automatic stop, and to SHUT-OFF

details

refer to Voltage

Cycle

Conversion

procedure.

position

for automatic

shut-off.

TAPESPEEDSELECTOR

30.

EQUALIZERSWITCH

Set

to desired tape

speed and set

Equalizer Switch

accordingly.

Set

to correspond

with Tape

Speed Selector.

TAPE TENSION

LEVER

(Sensing

Pole) 31.

POWER SWITCH

Provides

proper

tension

for

better

tape stabiiity.

Also

functions

as Sensing

pole

tor reverse

playback. 32.

TAPE SELECTOR

SWITCH

Depress

when

using Akai

Super

Range Tape or other make low

10. SENSING POLE

noise tape.

Irunctions

as Sensing

Pole

for continuous

reverse

playback.

33.

RECORDING

LEVEL CONTROLS

(left

& right)

(Model

ll.

HEAD

COVER

Gx-221D:

Right

RECORDING LEVEL CONTROL)

Houses

(from

lelt

right) Erase, Recording, lnd

Forlvard/

Reverse Playback Heads.

34.

MICROPHONE JACKS

(left

& right)

12. MANUALREVERSEBUTTONS

3s. SOUND-ON-SOUNDBUTTON

For

effecting manual reverse

pla-vback'

For

sound-on-sound

operatioÍl.

Refer

to sound-on-Sound

13.

TRACK

SELECT0R

swITCHEs

Recording

procedure'

For

easy

selection

of, racks

for

stereo

monaural

perfor'

36.

RECORDING

INDICATOR LAMp

mance'

Lights

when machine is set to

recording mode.

14. MONITOR SWITCH

37.

CyCLE CONVERSION

SWITCH

(B)

monitor

program

source, set to SoURCE

position'

setthisswitchandcycleconversionSwitch(A)onfrontpanel

monitor rgcorded

signals

for

playback.

set to

TAPE

position.

L so

È, or 60 Hz to correspond with area

po$,er

source.

15.

VOLUME CONTROLS

(left

and right)

(Model

GX-221D:

Left Recording Level

control)

'e'

v^-LLtu

::Ià*3§:yJÏ:}r,.

speaker output, and to oÈ

r,osition

16.

HEAD*HONE

JACK

cut

speaker

output

for monitoring or

private

headphone

For monitoring or

private

headphone

listening. use stereo

listening'

headphones of I

§) impedance.

39.

UNMRSAL VOLTAGE SELECTOR

AND FUSE ,OST

17.

TONE CONTROLS

(bass

and treble)

Refer to voltage and cvcle conversion

procedure

Clockwise

increases bass

and treble

respectively.

40.

AC CORD

18. VU

METERS

(left

and

right)

41. SPEAKER

JACKS

(Left/Right)

Indicates

recording and

playback

levels.

42.

LINE OUTPUT JACKS

(Left/Right)

19.

TAPE GUIDE

Connects to tape

inputs of ixternal amplifier or recorder.

20. RECORDINGSAFETYBUTTON

43.

DINJACK

For effecting

recording

mode, depress this

button

and set

Enables inter-connection

with

external

amplifier

*ith

rhe

Record/Playback LeYeÍ

to REC

position.

use of a single

Din

cord connection.

21.

AUTOMATIC STOPISHUT-OFF

LEVER

44.

DIN

JACK

HIGH/LOW INPUT

S\!'ITCH

22.

rAKE.up REEL

rABLE

i::J

ïi'# ?fJï:-,:ï"i;"i1?à'J'r';',:?;'"1"^ï."'iTJ,'i'lï.ï

23.

BUILT-IN SPEAKER

MV,

SEt tO LO\ï

POSitiON-

24. TAKE.UP

REEL

RETAINER

45.

LINE INPUT

JACKS

(LEft/Right)

pull

tip

retainer outward

and turn

left

right to firmly

connects to

outputs of external source'

lock

reel into

place.

TAPE SPEED

SELECTION

This model operates on three

tape speeds

{1-1i),3-3/4.

and

i-7/8 ips).

Tape speed is determined by

the

position

of the

Tape

Speed Selector. For

proper

equalization,

the Equalizer

Switch must be set to correspond with

tape speed.

Recording time

using an

1800

ft.

tape

(Stereo)

hrs. at

1-718 ips

;

hrs.

at 3-3,14 ips

;

i.5 hrs.

'7-1

tps.

(Monaural)

hrs.

at 1-7r8 ips

;

hrs.

at 3-314 ipst

hrs.

7-1l2 ips.

FAST

FORWARD & REWIND

For fast

forward

rervind, operate

Past Forward/

Rewind Lever.

This feature

peÍmits

rapid selection

recordings

the tape. This lever locks into

position

and

cannot

be operated

while the Recordi

Playback Lever is in

operation

and

viee-versa.

VOLTAGE

AND CYCLE

CONVERSION

VOLTAGE

Your

machine is

equipped with

a universal voltage selector

offering six selections

of voltage from 100 V to

240 V AC

for

worldwide

operation. Voltage

preset

at the

factory

accordiag

to destination. Please

confirm setting

prior

operation

and

if read.justment

is necessary,

proceed

follows :

(A)

Disconnect

power

cord and

remove the Fuse

Post

by screwlng

in direction

of arrow.

(B)

Remove the

Voltage Selector

Plug and

reinsert so that

proper

area

voitage

is shown through

the

plug

cut-out.

(C)

Change

fuse

to correspond with

voltage and

tighten the

Fuse

Post.

100

V to 720 Y :

1.5 A, 250

fuse

;

200

V to 24OY

1 A,

125 V

fuse.

Be sure to disconnect

power

cord before attempting

readjust

voltage.

To maintain optimum

performance

and

prolong

the

life

your

machine,

it is important that the

line voltage be

held

within

lo%

deviation

of standard

area voltage.

CYCLE

Correct

tape speed

cannot be obtained

the Cycle

Conversion

Switches

are not

properly positioned.

Cycle

Conversion

Switch

(A)

located

on the upper center of the

face

panel

and

(B)

is located at the rear of the

recorder.

Using a screw

driver, rotate

Cycle Conversion Switch

(A)

counter-clockwise

approximately

one-eighth of a turn. The

switch

can

then

moved either OUT or

IN. 50 Hz

operatlon

is obtained by moving

the switch

OUT

and 60

operation

by moving the switch IN. The switch

must be

rotated back

to its originai

position

after

it has been

reset.

Cycle Conversion

Switch

(B)

must be set aecordilgly.

With

a minus

screw driver, ioosen adjustment

scre\M and move to

50 Hz or 60 Ftrz

position.

Tighten

screw.

Do not attempt to

rotate

the Cycle Conversion Switches

when

the

motor is not

running.

AUTOMATIC STOP & SHUT.OFF

One of the exclusive

features of this

model

is the automatic

stop & shut-off

function of the unit. For Automatic Stop

(to

stop reel

movement at the end of the tape), set the

Shut-Off Switch

to STOP

position,

and

for

Automatic

Shut-Off

(to

cut off the

power

of the entire

unit

at end of

tape), set to

SHUT-OFF

position.

PAUSE CONTROL

To momentarily stop

the tape during recording or

play-

back,

lift

Pause

Lever. Pause control

especially

useful for

editing tape during recording. To

reiease

Pause

Lever,

depress Start Button.

Pause Control will

not function during Fast Forward or Rewind

operation.

ï,.::;

il!0

OPERATING

PRECAUTIONS

The

conditions

listed below do

not indicate

mechanical

failure of

your

unit. If

your

machine

exhibits

any of the

following,

please

check for

trouble as

indicated.

Loss of sensitivity

oÍ tone

quality

may

be due

to :

Wrong side

of tape

facing heads.

power

voltage

lower than the

voltage

to which

your

machine

is adjusted.

Magnetized

heads. See

Head Demagnetizing

procedure.

Irregularity

of tape transpoÍt

may be due

to :

Dust

or magnetic

particles

adhering

to Capstan,

etc. See

Pinch

Wheel & Capstan

Cleaning

procedure.

Bent

Take-Up

Reel.

Tape

loaded improperly.

See

Tape Loading

procedure.

your

machine

will not

operate,

check

to see

that

connections are

correct

and controls

are

properly

posi-

tioned.

The

following

notes

are

provided

for

your

convenience.

Your

machine

requires

constant

voltage

for optimum

performance.

If the

sound sources

are so

far away

from

the

microphones

that

recording

levels must

be tumed

up to

maximum,

some

hum

or noise

will inevitably

recorded.

test recording

recommended

before

attempting

a final

recording.

Should

there

be a

problem

with

your

machine, write

down

the model

and

serial

numbers

and all

perti-nent

data

regarding

warranty

coverage

as well as

a clear description

the

existing

troubie and

contact

your

nearest authorized

Akai Service

Station

the

Service

Department

of Akai

Company,

Tokyo,

Japan.

FOR

BETTER RECORDING RESULTS

With the

recorder set to recording

mode, the recording

input level is registered on the VU

Meters, but

the recordiag

level can be more

precisely

set by adjusting

the

volume

controls while monitoring

input

signals through stereo

headphones.

Adjust during momentary maximum input,

etc. so that

the VU Meters register normally.

For

recording

with the least

possible

distortion, keep the recording leve1

high as

possible

within the

white

part

the

meter

scale.

SOUND

MONITORING

For

sound monitoring

private

headphone listening,

connect stereo

headphones of low impedance type

O) to

Headphone

Jack.

Akai models ASE-22 and ASE-20 are

highly recommended,

TAPE SELECTOR

SWITCH

Depress

the Tape Selector Switch

when

usiag Akai

SRT

(Super

Range) Tape

or other

make

1ow noise tape.

This

feature brings out the maximum response of 1ow noi.se tape

and

works to change the recording

equalization

according

to the tape. Although this machine extribits a

good

frequency response with

regular

tape, this

further

extended

with low noise

tape.

not

depress this switch

when using regular

tape.

PINCH WHEEL

& CAPSTAN CLEANING

foreign

matter is allowed

accumulate

on the Pinch

Wheel and Capstan, these

particles

will come off on

the

tape causing deterioration of

sound

quality.

Oil

adhering to

the

Capstan also causes irregularity in

tape transport. It is,

therefore,

recommended

that these

parts

wiped clean

occasionaily. For

Pinch Wheel

.and

Capstan

cleaning,

use

Akai cleaning fluid

(from

Head

Cleaning Kit HC-500)

alcohol.

While the

Heads usually require

no cleaning, if

old tape

splicing tape is used, because

the

particles

from

such tape

are voluminous, head

cleaning

is recommended. In

such an

instance,

ciean

heads

with a cotton

swab stick

soaked in

Akai cleaning fluid

or alcohol.

Do not use

such chemicals

as chlorothane, etc.

as the rubber

parts

will deteriorate.

HEAD

DEMAGNETIZING

Normally, the steel

pole pieces

which form

part

of the

recording and

playback

heads become

slightly

magnetized.

The

effect

magnetization is that it causes

considerable

drop-out and introduces

noise into

your

recordings.

It is,

therefore, recommended

that

demagnetizing be

performed

periodically.

This can

accomplished

with a bulk de-

magnetízer by

bringing the

prongs

close to the heads

and

making

several

circular motions over

all

head

surface areas

as well as the head housing.

sure to cut off

the

power

the

unit

prior

to demagnetizing

the

heads.

Do not use magnetized

tools

the vicinity

of the

heads.

Read demagnetizer instructions

carefully

prior

demagnetizing

the

heads.

HOW TO USE

THE

DIN JACK

The Din Jack

can

be used instead of REC and

Jacks

your

amplifier has a corresponding connection.

This one-

cord system

eliminates the necessity

four

separate

connections and disconnections. If

the output level of

your

amplifier is more than 50

mV, set

the

Din Jack Highllow

Input Switch to HIGH

position,

and when less than

50 mV,

set

LOW

position.

TAPE ERASING

Any signals

previously

recorded

on the tape will be

automatically

erased as a new recording is made. No

plugs

should

be connected to the Input

Jacks

and Volume

Controls

should

be kept

at minimum. For

quick

and

complete

erasure, the

use

of a bulk tape eraser

is recom-

mended.

CONNECTIONS

FOR PLAYBACK

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

shown

the

figure

page

8. Lock

reels

firmly into

place

with the

built-in reei

retainers

provided

reel shafts.

4-TRACK RECORDING/PLAYBACK

SYSTEM

This model

employs

a 4-fuack system

which

can be used for

either stereo

or monaural. Select

desired track(s)

with

the

Track Selector

Switch.

STEREO

RECORDING

PLAYBACK

Stereo

recording

and

playback

requires

the simultaneous

use of two

tracks. For

stereo operation,

depress

the

STEREO

Track Selector

Switch.

The

first stereo

recording

(playback)

takes

place

on tracks I

and 3. The

second

stereo

playback

takes

place

on tracks

2 and

4, after the machine

has

been set to

reverse

playback

mode

the reels

have

been inverted.

To record

on track

2 arrd 4,

invert reels.

MONAURAL

RECORDING

& PLAYBACK

Monaural

recording

and

playback

sequence

is 1-4-3-2.

Depress

1-4 Track Selector

Switch.

The

first monaural

recording

(playback)

takes

place

on track

1, and the second

on track

4 after the

reels have been

inverted, Invert reels

and depress

3-2 Truck Selector

Switch.

The thud monaural

recording

(playback)

takes

place

tÍack 3, and the

fourth

on track 2 after the

reels

have been

inverted.

This

model does not

record in reverse

direction. For

reverse

playback,

use

sensing tape

for automatic

Íeverse

playback

or the Reverse

Button

provided

on the front

panel

for

manual reverse,

or invert ree1s.

MONAUFIAL,

24+

42+

Trac k 1 [,4ono

STE R EO

F.2*

Track

L1+

ffi

R1+

Stereo

4 L2+

PLAYBACK OF PRE-RECORDED

TAPE

For

playback

with Model GX-221D Stereo

Tape Deck,

please

refer to

page

13.

Please read

the operating

precautions

carefully

before

attempting operation.

Connect

power

cord and

load

pre-recorded

tape.

STEREO

PLAYBÀCK

A. Turn on Power Switch.

B. Depress

STEREO Track Selector Switch,

Select

tape speed and

set Equalizer Switch to

con-

sistent speed.

D. Set Monitor

Switch

to TAPE

position.

E. Set Record/Playback Lever to PLAY

position

to begin

playback.

Adjust left and right

Volume Controls.

G. Adjust Tone Controls.

If a more

powerful

output is

desired,

connect two

speakers

to the

Speaker Jacks

or connect the

Line Outputs to the

tape inputs of an external stereo amplifier

and

connect

two

speakers to the amplifier.

MONAURAL PLAYBACK

Only

the left channel is used for monaural

playback

tracks 1 and 4. Substitute the

following steps for

steps B

and

F of

the

stereo

playback procedure

and

add step H.

B. Depress

1-4 Track

Selector Switch.

F. Adjust left Volume Control.

H. Depress REV Manual Reverse Button or

invert reels

for

playback

on track 4.

Only the right channel

is used for

monaural

playback

tracks

and

2. Substitute the following

steps for

steps

and

F of the stereo

playback procedure

and add

step H.

B. Depress 3-2 Track

Selector Switch.

Adjust

right Volume

Control.

Depress REV Manual

Reverse Button or invert reels

for

playback

on track

AUTOMATIC

& MANUAL REVERSE

PLAYBACK

One

of the main features

this model

is the automatic

reverse

playback

mechanism

which eliminates troublesome

inverting of reels by

hand.

Simple

application of a

piece

sensing

foil to

the

tape

at desired reversing

points

is all that

is necessary

for continuous

playback

in both directions.

(A)

Affix about

a 2 cm

(314")

long

piece

of sensing foil to

the outside of the tape at desired

reversing

point.

(B)

If continuous reverse between two

points

is desired,

affix another

piece

of sensing tape to the

inside if

the

tape at desired reversing

point.

As the

foil

passes

the sensing

poles,

reverse is effected.

This model

is also equipped with Manual Reverse Buttons

for added convenience. To effect manual

reverse,

simply

depress REV or FWD

Manual

Reverse Button.

CONNECTIONS

FOR RECORDING

RECORDING

USING MICROPHONES

meters

ft.)

Please read the

operating

precautions

carefully before

attempting

operation.

Connect

power

cord and load a

tape. New blank tape

gives

best results.

STEREO RECORDING

A. Turn on

Power

Switch.

B. Depress STEREO

Track Selector

Switch.

C. Select tape speed

and set

Equalizer

Switch to

con-

sistent speed.

D. With Reset Button, set Index

Counter to

"0000".

This

Index

Counter

provides

an easy reference for locating

positions

on the

tape.

E. Insert

microphone

plugs

into Microphone

Jacks.

Maintain

a distance

of at

least

2 meters

ft.)

between

microphones.

F. Set Monitor

Switch to

SOURCE

position.

G. Adjust and

balance

microphone'input ievel

with teft

and right

Recording Level

Controls while observing

left

and right

VU Meters.

Normal recording

should not

exceed "0" VU

on either VU

Meter.

H. When an optimum

recording level has

been determined,

while holding

Recording

Safety Button at depressed

position,

set

Record/Playback

Lever

to REC

position

to begin

recording.

Note

that at this time

the Record-

ing

Indicator

Lamp

will light.

To stop recording,

return

Record/Playback

Lever

vertical position.

MONAURAL

RECORDING

For monautal recording,

substitute the following

steps for

steps

(B), (E),

and

(G)

of stereo recording

procedure

and

add step

(J).

Recording

on Tracks I and 4

Only the

left

channel is used

for recording on tracks 1

and 4.

B. Depress 1-4 Track

Selector Switch.

Insert

microphone

plug

into left

Microphone

Jack.

Adjust and balance

microphone input 1eve1

with left

Recording Level

Control while observing left

Meter. Normal recording

should not exceed

"0" VU.

J. Invert reels

to record on track 4.

Recording on Tracks

3 and 2

Only the

right

channel is used

for recording on tracks

and 2.

Depress 3-2 Track

Selector Switch.

Insert

microphone

plug

into

right Microphone

Jack.

Adjust and balance

microphone input 1eve1 with

right

Recording Level

Control while

observing right VU

Meter. Normal recording should

not exceed "0" VU.

Invert

reels to record

on track 2.

->i

'ta.:l

i't.1

.§.'*

§;

SOUND-ON-SQUND

RECORDING

For transfer of

previously

recorded material

from

one track

to the other,

accumulating

as many individual

recordings

single track as

is desired. Can

be applied

to language

study, and interesting

musical

compilations, etc.

First Recording

A. Confirm

that

there

Input

Jacks.

Depress

l-4 Track

track l.

Insert microphone

plug

into left Microphone Jack.

D. Set

Monitor Switch

to SOURCE

position.

Adjust

left Recording

Level Control

while observing

left VU Meter.

F. Depress

Recording Safety

tsutton

and set

Record/

Playback

Lever to

REC

position

begia first record-

ing, i.e. Do-Re-Mi.

G. When

the

first recording

is completed,

rewind

tape to

starting

position.

are no connections

to the Line

Selector

Switch

for

recording on

RECORDING

FROM

AN EXTERNAL

AMPLIFIER

an external amplifier

or tuner amplifier

is used,

connect

the tape

outputs

of the external

amplifier

to the

Input

Jacks

of Model GX-221

in step

(E)

recording

procedure.

The

GX-221

will

record any source

which

can be selected

on the external

amplifier.

RECORDING

FROM A

TURNTABLE

record from

a stereo

monaural

disc, a crystal

pick-up

(0.5

1 V) or a

cermic

pick-up

can

be connected directly

to the

Input

Jacks

in step

(E)

of recording

procedure.

However

is a

magnetic

cartridge

is used,

it must

connected

to the

Input

Jacks

through

an external

amplifier.

TAPE

DUBBING

When

recording

from

another tape

recorder,

connect

the

Output Jacks

of the

playback

machine

the Input Jacks

model GX-221

in step

(E)

of recording

procedure.

Second

Recording

H. Confirm

that

the

Monitor Switch

is at SOURCE

position

and depress

Sound-On-Sound

Button.

Depress

3-2 Track

Selector

Switch

for

recording

track

while monitoring

track I

through

headphones.

Insert

microphone

plug

into right

Microphone

Jack.

Adjust

right

Recording

Levei Control

while

observing

right VU Meter.

Connect

stereo

headphones

for monitoring

the first

recording.

Depress

Recording

Safety

Button

and set

Record/

Playback

Lever to REC

position

to begin

second

recording,

i.e., Mi-Fa-So1.

As the second

recording,

Mi-Fa-Sol,

is made on track 3, the

first

recording,

Do-Re-Mi,

monitored through

headphones.

The

two

recordings

will be

completel-v

merged

orr track 3

(

Do-Mi-Re-

F a-Mi-Sol).

The third

and

subsequent

Íecordings are

made in the same

wa-v

the

second

by alternating

tracks

1-4 and

3-2.

For

playback,

set

Track

Selector

Switch

to track

which the

last recording

was

made

and

set Monitor

Switch

TAPE

position.

PLAYBACK

WITH MODEL

G){.2ZID

TAPE

DECK

Please read the

operating

precautions

carefully

before

attempting operation.

For

playback

pre-recorded

tapes

connect the

Line

Outputs of. the

GX-221D to the tape

inputs

your

stereo amplifier

and connect a

pair

of speakers to the

amplifier. Connect

power

cord and

load

pre-recorded

tape.

STEREO

PLAYBÀCK.

A. Turn on

Power Switch.

Depress STEREO

Track Selector

Switch.

C. Select tape speed

and set

Equalizer

Switch to con-

sistent

speed,

Set

Monitor

Switch to TAPE

position.

E. Set Record/Playback

Lever

to PLAY

position

to begin

playback.

F. Adjust extemal

amplifier controls.

MONAURAL

PLAYBACK

Only

the left

channel is

used for

monaural

playback

tracks

I and 4.

Connect the left

Line Output to the

left

tape

input of external

amplifier.

Substitute the following

step

for step

(B)

of stereo

playback procedure

and add step

(G).

B. Depress

1-4

Track

Selector Switch.

G. Depress REV Manual Reverse

Button or invert

reels for

playback

of track 4.

Only the right channel is used

for monaural

playback

tracks

3 and

Connect the right

Line Output

to the right

tape

input

external amplifier.

Substitute the followi.ng

step for step

(B)

of stereo

playback procedure

and add step

(c).

B. Depress

3-2 Track

Selector

Switch.

G. Depress REV Manual Reverse

Button or invert

reels for

playback

track 2.

FOR

RECORDING

WITH

MODEL

GX.22ID. PLEASE

REFER

TO PAGES

through

12.

TECHNICAL

DATA

4-track 2-channel

stereo/

monaural

system.

Up to 7"

reel

1-t12,3-314

and 1-7l8 ips(!0.1%')

Less than 0.08% RMS

at 7-1

rps

Less than 0.12%

RMS at 3-3/4

ips

Less than

0.20% RMS at

i-7lB ips

Equalization . .

Correct

equalization

for

playback.

Frequency Response

of tapes

recorded to

NAB curve.

30 Hz

to 25,000 Hz

(r3

dB) at

7-ll2 ips

;

30 Hz to 20,000

IIz

(t3

dB) at 3-314

ips

;

Hz to

10,000

(t3

dB) at

1-7l8 ips

(Using

Akai SRT

Tape).

30 Hz to

23,000 Hz

(13

dB)

at 7-il2

ips

;

Hz to 19.000

(+3613;,

3-3r4

ips

;30

to 9,000

(t3

dB) at

1-7

l8lps

(Using

regular

tape)

Less than

1.5'/o

(.1000

"0"

VU)

\\' r otal nrusic

power

(

15 W/ 15

(GX-221

only)

\\'conlinuous

powel

(

10 W/ 10 W) at

(GX-221

only)

Better

than 50 dB

Better

than 70

Better than 65

(monaural)

Better

than 50 dB

(stereo)

100

kHz

(3)

4-track

recording

and

playback

heads,4-track

erase

head

Motors

(3)

: One

hysteresis

synchronous

3-speed motor

for capstan drive and

two

6-pole

eddy-current outer rotoÍ

motors for supply and take-up

reel

drive

Fast Forward &

RewindTime . .. .

. 60i

7-5 sec. using a

1200 ft. tape at

60i

50 Hz

Recording

Capacity . .

irours

stereo

recotding using

I 100 ft tape at l--i8

ip:

Output Jacks .

Line

(2)

: 1.23

("0"

VU)/100 §)

(Required

load impedance : more

than

Phone

(1)

: 30 to

mVi B

Speaker

(2)

: 15 W/8,Q,

each

iGX-2.21

onlv)

Track System

Reel

Capacity

Tape Speed

Wow &

Flutter

Distortion

Output

Power

Signal

to Noise

Ratio .

Erase Ratio

Cross-Talk

BiasFrequency......

Heads .

Input Jack

Din Jack

Speaker

Semi-Conductors....

lntegrated

Circuits . . .

Power

Requirements

Power Consumption .

Dimensions

Weight

Micropirone

(2)

: 0.2 mV/ 10

Line

(2)

: 50 mVi150 kf}

0.4 V/50

rnV

(High)/2

(Low)

Two

built-in 4"

speakers

Transistors

(GX-221D

: 24')

Diodes:

(GX-221D:

14)

Linear IC : 2

Power lC :

(GX-22

1 only)

100

\' to 240 V A.C., 50/60

135 W

(GX-221D

440(W)

425(H)

220(D) mm

(li.4xló,/xb./

5 ks

(49.5

lbs.)

(GX-221D

2C.2 kgl

44.4

lbs.)

For improvement

purposes,

specifications and

design

are subject Ío change

without

notice,

STANDARD ACCESSORIES

(ModelGX-221)

Microphone w/Stand

........

DemonstrationTape

........

EmptyReel

.. .....,.1

SensingTape.

.......

Spare Fuse 1 set

Operator'sManual

....1

(ModelGX-221D)EmptyReel

.........1

ConnectionCord.

....

SensingTape.

.......

Spare Fuse

1 set

Operator'sManual

....1

*Spare

Fuses are not

included

with

CEE, CSA, and

UL standard

models.

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Akai GX-221 Manual

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