Akai GX-77 User manual

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
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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.
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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.
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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.

Setting the Output Level
An OUTPUT control has been supplied on this deck to match the
deck’s output level to the outputs from other sources such as your
tuner or turntable, etc. Please adjust as follows:
1.
Set the Input selector on the external amplifier to Tuner,the Monitor
selector to Source and listen to an FM broadcast.
2. Adjust the amplifier’s volume for normal listening.
3. Record as much of the FM broadcast as required on to this deck.
CUE/REVIEW Operation
Use the CUE/REVIEW lever to find the beginning of a song during
playback.
1,
2.
Press down the CUE/REVIEW lever.
If the tape is travelling in the forward direction ( ™ indicator is lit):
Press the Fast Forward (™) button. The deck will advance and
at the same time playback the tape quickly in the direction of
the arrows (> }.
Press the Rewind ( «4 ) button. The deck will advance and at
the same time playback the tape quickly in the direction of the
arrows ( «ea ).
lf the tape is travelling in the reverse direction ( «¢ indicator is lit):
11
. Set the Monitor selector on the external amplifier to Tape and
listen to the playback.
Compare the volume of the recording with the FM broadcast and
: alter the deck’s OUTPUT control until they are the same.
Press the Fast Forward ( ™® ) button. The deck will advance
and at the same time playback the tape quickly in the direction
of the arrows ( >),
Press the Rewind ( «4 ) button. The deck will advance and at
the same time playback the tape quickly in the direction of the
arrows ( << ),
. When the desired section is reached, press the Stop ( a) button.
. To resume playback, push in the CUE/REVIEW lever to release
the operation.
5. Press the Forward ( ™ ) or Reverse ( « ) button.

Reverse Recording
Change
the
direction
of
tape
travel
at
a
suitable
point
without
stopping
the recording.
1.
Press
the
Reverse
{
<
)
button
to
change
direction
from
forward
to
reverse
and
the
Forward
{
®
)
button
to
change
from
reverse
to
forward.
Auto Reverse Recording
Attach
a
2.5
to
4cm
length
of
standard
accessory
sensing
tape
to
the
back
of
the
tape
at
the
point
where
you
want
to
change
direction.
When
the
sensing
pin
on
the
supply
reel
side
comes
in
contact
with
the
sensing
tape
the
direction
will
be
automatically
changed
without
inter-
rupting
recording,
See
the
chart
for
the
Reverse
selector
setting.
*
Do
not
attach
the
sensing
tape
to
any
place
on
the
tape
other
than
where the direction is to change.
Reverse
to
forward
auto
reverse
is
impossible.
Please
note
that
during
one
cycle
recording
of
a
previously
recorded
tape,
about
one
second
of
the
previous
recording
cannot
be
erased
when
the
deck
changes
to
reverse.
Please
erase
this
portion
manual-
ly.
*
During
quick
reverse
the
input
signal
is
interrupted
for
about
0.5
seconds.
Nothing
can
be
recorded
during
this
interruption.
Leave
in
the
recording
mode
and
the
direction
will
change
in
about
one
second.
The
position
of
the
Reverse
(REV)
SELECTOR
has
no
effect
on
manual
reverse
operation.
Sensing pin
Sensing tape
Recording side
Lo LET
Lda
SESS SSS
NOL Zed POPP OPI LOLL Lah hhh ddd
RECORDING.
Position of Reverse Selector
Tape Travel
Operation
|
)
Forward
only
REV
SELECTOR
ONE-WAY
ae
—_
Cc
Tape
Travel
_———»
(2)
Reverse
only
2.
When
the
Recording
(REC
@)
and
Reverse
1.
When
the
Recording
(REC
@)
and
Forward
(
»
)
buttons
are
pressed
simultaneously,
re-
cording
in
forward
direction
is
possible.
*The
deck
will
go
into
stop
mode
at
the
end
of
the
tape.
(~@
)
buttons
are
pressed
simultaneously,
re-
cording
in
reverse
direction
is
possible.
*The deck will go into stop mode at the end of
the tape.
a
|
FEV
SELECTOR
aa ra
Only)
CONTINUOUS
(Forward> Reverse
(TT
| ~<«———Tape Travel
+ 4
ay
3.
When
the
Recording
(REC
@)
and
Forward
7
REV
@
(
»
)
buttons
are
pressed
simultaneously,
after
S
SELERMTOR
once
cycle
aati
to
reverse
only)
of
record-
Ey
ing
is
complete
(all
the
tape
is
taken
up
on
one
>
oe
=
1S
reel)
the
deck
will
go
into
stop
mode.
<P
ex
|
niet
*
During
recording,
even
if
the
REV
SELEC-
+
aes
1
i
ra
TOR
is
set
toc,
the
deck
will
go
into
one
$
oe
Eee
cycle
recording
to
prevent
recording
over
of
ceo
[
Wi
|
already
recorded
tape.
3.
When
the
Recording
(REC
@)
and
Reverse
(~~
)
buttons
are
pressed
simultaneously,
recording
in
reverse
direction
only
is
possible.
12

Continuous Playback
Attach two pieces of sensing tape at the two points where the direction
of tape travel is to be changed. When the sensing tape comes in contact
with the sensing pin the direction will change automatically. Thus con-
tinuous playback forward to reverse to forward and so on is possible.
Set the Reverse (REV) SELECTOR to (> and refer to the chart for a
more detailed explanation.
* Recording will take place as in = mode.
* Do not attach sensing tape to any point other than where you want
to change direction for continuous playback.
Sensing tape
Recording side
Pas
SISSSSSSSSSSASSAS LS RRaBa’
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REV
SELECTOR
—_
a Cap
he |e
ONE— ONE-WAY
REV
SELECTOR
— SS «CS
NL 2
I
I
>
e
°
3
is“
&
>
®
«
t
ae]
=
©
3
-
°
~ TWO-WAY
REV
SELECTOR
—_ a (CS)
mae 3
1 if
Lm)
CONTINUOUS
<—_——_Tape Travel
13
. When the Forward ( ») button is pressed,
playback in forward direction is possibie,
The deck will go into stop mode at the end of
the tape.
. When the Reverse ( ~«¢ ) button is pressed, play-
back in reverse direction is possible.
The deck will go into stop mode at the end of
the tape.
. When the Forward ( ™) button is pressed,
after once cycle (forward to reverse only) of
playback is complete (all the tape is taken up
on one reet}) the deck will go into stop mode.
. When the Forward ( » ) or the Reverse ( « )
button is pressed, the deck will go into con-
tinuous playback. Press the stop {@) button
to stop playback.

Absentee Recording
Before beginning:
@ Prepare the timer and make all the necessary connections. Connect
the Power Cord.
@ Check that the timer is set to the correct time.
1. Set the timer to EVER-ON or ON.
* There are differences between the timers on the market so please
refer to the timer’s operator’s manual for the correct procedure
for your timer.
2. Turn on the power to the deck and
the other components connected to
the timer and prepare for recording.
See page 7.
3. Set the REV SELECTOR.
SELECTOR
4. Press the deck's PAUSE ( § § ) but-
ton.
When recording in forward direction
press the Forward ( » ) and REC
{ @ ) buttons simultaneously.
* If recording is to begin in the
reverse direction, press the Re-
verse ( <« ) and REC ( @) but-
tons simultaneously.
RIGHT LINE IN LEFT LINE IN
Speaker
@ Check how long the tape can record.
Set the TAPE SELECTOR correctly for the tape being used.
@ Set the TAPE SPEED selector to the desired recording speed.
5. Depress the stop button ( mm ) to re-
lease recording standby.
6. Set the TIMER START selector on
this deck to REC. Een
REC OFF PLAY
Shae
(i)
7. Set the timer start time and length of recording time, then set the
timer to AUTO or TIMER the deck and other components will be
turned off.
* If this deck is connected to a multi program timer, continuous
recording for a long period is possible.
* All the components will be turned on and the deck will go into
recording mode at the designated time.
@ Once absentee recording has finished the power supply will be
automatically cut to the components but please ensure the TIMER
START selector is OFF before switching on the power to this deck
again.
Power cord
86 GCOO0 9000 00 FN00N00dIVE
AC OUTLET
UNSWITCHED
‘*lomd © |e
le
14
10000 noi © Power cord
Pre/Main Amplifier
Power cord

Timed Playback
Before beginning:
@ Prepare the timer and make all necessary connections. Connect the e@ Set the TAPE SELECTOR for the tape to be played.
Power Cord. @ Set the TAPE SPEED selector to the speed at which the recording fe
@ Check the timer is set to the correct time. was made.
1. Set the timer to EVER ON or ON. 5. Depress the stop button ( mm) to re-
* There are differences between the timers on the market so please lease playback.
refer to the timer’s operator's manual for the correct procedure
for your timer.
2. Switch on the power to the deck and
other components connected to the OUTPUT
timer and prepare for playback. See
page 7,
Adjust the volume from the speakers.
6. Set the TIMER START selector on -
this deck to PLAY.
REC OFF PLAY
ap All ae
3. Set the REV SELECTOR.
REV
selec Ton CoM
— «s SC
7. Set the timer start time and the length of playing time and then set
the timer to AUTO or TIMER the deck and other components will
be turned off.
. 8. The deck is now ready for timed playback.
4. When playback is to begin in forward
direction, press the forward button
{ ™ ) and check the tape is travelling
forwards.
* If playback is to begin from the
reverse direction, press the reverse
button (~ ) and check the tape
is travelling in the reverse direc-
tion.
Power Cord zi
BB 0000 C000 00 00000000000 ta
Power Cord
RIGHT LINE OUT RIGHT PLAY
J |
LEFT LINE OUT LEFT PLAY SBS ee ee /
bs 10000 nont ©)
Pre/Main
Amplifiers
[2] Power Cord
|
= |
|
Speaker
15

Tape
Dubbing
ollow
the
procedure
outlined
below
to
make
an
exact
copy
of
a
re-
Dubbing
From
The
GX-77
To
A
Cassette
Deck
sorded
tape
or
to
edit
and
change
the
order
of
programs
recorded
from
e
Connect
an
additional
cassette
deck.
=M.
e
Refer
to
the
connections
diagram
on
page
3
or
the
one
below.
e Switch on the power to all the components.
PLAYBACK DECK RECORDING DECK
Place the recorded tape on the GX-77 to be
used for playback.
2 Load a blank tape on the deck to be used for
recording.
3 PERE
Set the other deck to recording standby. If a
4 3 head deck is used for recording, set it’s Moni-
tor switch to Source.
’ Set the GX-77 to playback.
Set the GX-77's OUTPUT control to maximum. [By
rome ©
Wind the playback tape back to the beginning 7
of the selection.
ee :
Put the GX-77 into playback mode.
See respective instructions for pausing.
Adjust the other deck’s recording level.
* Watch the deck’s level meters to check that
0 dB is not exceeded.
Take the deck out of recording standby into
recording.
* Monitor simultaneously if the deck of a
3-head type. (Please refer to the deck’s
operator’s manual for details.)
LEFT
LINE
IN
raps
po
=
“
,
oO
RIGHT
LINE
IN
4
®
i:
09
e¢O
Bee
LINE IN
med oe
le
10000
11t
©)
Pre/Main Amplifiers
__3
Connect
as
inside
the
box
when
using
a
pre/main
amplifier.
16

Tape Editing
This is a 4 track deck but please follow the procedure below for editing
a tape which has a recording in only one direction. If you intend to
splice a tape which has recordings in both directions, please remember
that the cut on one side will affect the other’s recording continuity.
Marking The Beginning Of A Program
Please raise the head cover during this operation.
1.
Playback
the
tape
and
monitor
through
headphones
or
speakers.
Press
the
PAUSE
(@ B)
button
at
the
desired
point.
2. Press down the CUE/REVIEW lever.
3.
Turn
both
the
reels
by
hand
until
the
blank
portion
between
songs
is
reached.
4. Once the correct position has been reached, take the portion of tape
at the middle of the playback head and mark it with a dermatograph
available on the market. This is now the beginning of the program.
* Please do not mix up the forward and reverse playback heads.
®
CuCcsmavieew
Playback
Sensing
pin
GX
head
Erase head
Recording Recording
GX head GX head
Playback GX head Erase head = Sensing pin
(ee
Reverse Forward
Tape Splicing
1. After marking the position place the marked portion into the
groove on the standard accessory splicing block.
* The marker should be over the center of the slanted groove.
2. Place the tape to be connected over it and cut into the groove as
shown.
3. Remove the excess tape and affix the splicing tape. Rub firmly
with a finger to prevent the splicing tape from coming off.
* Only use splicing tape for joining tapes.
4. Remove the tape from the block and remove the excess splicing tape.
@
When
a
recorded
tape
has
broken
match
the
ends
and
repair
With
splicing tape.
*
The
tape
may
be
cut
with
scissors
but
it
will
adversely
affect
the
recording if magnetized scissors are used.
17

Maintenance
Cleaning
Please use Akai’s cleaning kit HC-550P, sold separately.
© Poor high notes \
Dropout Please clean the recording, playback heads
°
oO Non recording | and capstan.
Oo Partialerasure..... Please clean the erase heads.
o Unstable taperun. . .Please clean the loading roller, pinch roller,
guide roller, capstan, tension arms and tape
guides.
It js particularly important that the parts which come in contact with
the tape, like the recording, playback and erase heads, capstan, tension
arms, tape guides and loading roller be cleaned for auto reverse record-
ing using sensing tape.
Method
Please
clean
with
cotton
swab
sticks
dipped
in
the
cleaning
fluid.
See
picture.
The
pinch
and
guide
rollers
are
easily
cleaned
with
a
cloth
wrung
out
in
cleaning
fluid.
;
Please
use
a
cleaning
fluid
suitable
for
rubber
for
the
pinch
and
guide
rollers.
*
Do
not
use
chemicals
such
as
chlorothane,
etc.
for
head
block
clean-
ing.
Demagnetizing (Turn off the Power Switch.)
Please
use
Akai’s
demagnetizing
kit
AH-15,
AH-20,
sold
separately.
©
Poor
high
notes
}
Please
demagnetize
the
recording
and
play-
o Noise { back heads.
*
Demagnetize
the
capstan,
tension
arms
and
tape
guides
at
the
same
time.

Troubleshooting
The conditions listed below do not indicate mechanical failure of your
deck. If your deck exhibits any of these conditions, check for trouble
as indicated.
Symptom Cai Remedy
use
No power although the power : :
ecedGe inserted. 9 P Not properly inserted. ma Insert until the power comes on.
No power ey Switch on power.
Tape incorrectly loaded. = Correctly reload.
TIMER START selector set to REC or .
PLAY. =» Switch OFF.
Warped reel. = Change.
Tape incorrectly loaded. ap Reload correctly.
Tape travel is not smooth.
Tape will not run even if the
operation buttons: are pressed.
Tape travels forwards or in re-
verse. when the power is’ switch-
ed on.
Dirty tape. = Change.
Dirt or grease on the pinch and loading rol- my Clean.
lers.
Erase heads dirty. => Clean.
_Incomplete erasure of previous
recording during recording.
Not in recording mode. = Put in recording mode.
Poor playback quality. - :
Recording heads magnetized. = Demagnetize.
.
Incorrect
TAPE
SELECTOR
setting.
mp
Correct.
.
Old
tape.
=
Change.
gi pias pais » iis
Recording level too low. Po Adjust.
Recording level too high. = Adjust.
Should
there
be
a
problem,
write
down
the
model
name,
serial
num-
Akai
Service
Station
or
the
Service
Department
of
Akai
Company,
bers
and
all
pertinent
data
regarding
warranty
coverage
as
well
asa
clear
©
Tokyo,
Japan.
scription of the existing trouble and contact your nearest authorized
19

SPECIFICATIONS
Track
System
.........--5
4
Track
2
Channel
Stereo
System
Reel
Capacity
.........-...
Up
to
7”
reel
Heads...
..--...0022
08s
GX
head
for
recording
x
2
GX head for playback x 2
Erase head x 2
Motors...
.
2.6.2.2.
0505
FG
Servo
D.C.
motor
for
capstan
drive
x
1
D.C.
motor
for
reel
drive
x
2
Tape Speed ...........-.- 19 cm/s +0.8% (7-1/2 ips.)
9.5 cm/s +1.0% (3-3/4 ips.)
Wow
&
Flutter
..........-.
Less
than
0.03%
WRMS,
0.07%
DIN 45500 at 19 cm/s
Less than 0.04% WRMS, 0.10%
DIN 45500 at 9.5 cm/s
Tape
Winding
Time.
.......-.
80
sec.
using
370
m
(1,200
ft.)
Tape
Frequency
Response........
25
to
33,000
Hz
+3
dB
(—20
VU)
at
(Using
a
EE
tape)
19
cm/s;
25
to
26,000
Hz
+3
dB
(0 VU)
25 to 25,000 Hz +3 dB (—20 VU) at
9.5 cm/s; 25 to 15,000 Hz +3 dB
(0 VU)
Signal
to
Noise
Ratio.
.......
Better
than
63
dB
at
19
cm/s
DIN
45500
Harmonic
Distortion.
.......
Less
than
0.5%
at
19
cm/s
[Osseo
Scales
cepts
Tae
ech
eee
too
Required
microphone
impedance:
600
ohms
Line:
70
mV
(input
impedance
47
kohms)
OUTBUT os 8 hie ig ene Gh Line: 0.775V at O VU
Required load impedance:
more than 20 kohms
: Phone: 1.3 mW/8 ohms at 0 VU
DIN Mo Bie AB eee {nput: 2.0 mV
(input impedance 10 kohms)
Output: 0.3V
Required load impedance:
more than 20 kohms
Power Requirements........ 120V 60 Hz for U.S.A. & Canada
220V 50 Hz for Europe except U.K.
240V 50 Hz for U.K. & Australia
110V/120V/220V/240V, 50/60 Hz
switchable for the other countries.
Dimensions ............. 440(W) x 244(H) x 227(D) mm
: (17.3 x 9.6 x 8.9 inches}
Weight... ......0..00 00 17.0 kg
(37.5 Ibs)
STANDARD ACCESSORIES
Sensing Tab Kit... ee tt te eee wes 1 set
Connection Cords... 2... 2. ee es 1 set
Empty Reel . 0... 0... eee ee ewe eee te eee wees 1
Operator’s Manual. 2... 2 1
*
For improvement purposes, specifications and design are subject to
change without notice.
20