Akai-GXC-325-D-Owners-Manual
GXC-325D
CASSETTE STEREO TAPE DECK
OPERATOR'S MANUAL
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CEE, CSA, UL, and LA standard models are not equipped with a Voltage Selector.
[herefore, 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: 220Y, 50 Hz
CSA Models: 120V, 60 Hz
UL and LA Models: 120V. 60 Hz
To prevent fire or shock hazard, do not expose this appliance to rain or moisture.
AKAI
MANUFACTURED & DISTRIBUTED BY AKAI ELECTRIC CO. LID. AKAI TRADING CO., LTD. AKAI AMERICA LTD.
CONTROLS
OPERATE PRECAUTIONS
E
Operate this machine in a level horizontal position
only.
Avoid setting this machine on a vacuum tube
amplifier, etc. which generates heat, or operating
the unit in extremely hot or cold places. Also
avoid blocking the ventilator.
Heads should be kept clean and demagnetized at
all times.
This machine is designed for utilization of low
noise tape as standard. The use of ordinary tape
will result in inferior performance.
Before using a cassette tape, check to confirm
whether tape slack exists. As tape slack causes
the tape to twist or tangle around the pinch wheel
and capstan, take up slack if necessary.
As the base of C-120 tapes are thin and easily
damaged, they are not recommended for use with
this machine.
Recording cannot be made on the leader tape.
Therefore, when using a new cassette tape, be sure
to forward the tape slightly so that the leader
tape is not in the head path.
Tapes which have been stored in a hot moist place
for a period of time or cassette tape with bent
cases should not be used. Such tape may curl or
have greasy places on the tape altering tape speed
and preventing proper performance. Always store
tapes in a cool, dry place,
Do not touch the tape with your fingers as high
frequency signals cannot be recorded in places
which are not clean on the tape,
When using a tape recorded with the Dolby process,
it is necessary to depress the Dolby NR Switch
at playback time also. Keep the Dolby NR Switch
at OFF position at all times except during Dolby
recording or playback.
Cassette tapes are equipped with a break-out tab
for both A and Bsides. When these tabs have been
removed to protect an important recording, no fur-
ther recording can be made on the tape unless
the cavities are plugged or covered with a piece
of tape.
PEAK LEVEL INDICATOR и E
At normal recording, VU Meter response is usually accurate, but when
pulsive signals enter, such as signals from percussion instruments, etc.,
response is slow and lower than actual volume is registered. This peak
level indicator acts as a warning device by lighting а! excessive input.
Because, for recording with the least noise possible, il is advantageous
to keep the recording level as high as possible not to exceed the level
at which distortion occurs due to excessive input, for best recording
results, the level range in which this light flickers at largest input parts
only E most ideal
(This indicator lights at +7 dB above “O VU),
TAPE SELECTOR SwIICHES > —
Depress LOW NOISE Switch when using low noise tape and depress
CHROME Switch when using chromium dioxide tape.
* Depressing these two switches simultaneously facilitates the use of
new Вест tape.
* Low noise tape is standard for this machine. The use of ordinary
tape will result in inferior performance.
RECORIMNG INDICATOR LAMY
Lights when REC Key is depressed.
OUTPUT LEVEL CONTROL— —
Adjusts output Yolume at playback time.
LEFT MIC/LINE RECORDING LEVEL CONTROLS =
Controls left channel recording input level, Adjust while observing lel
VU Meter.
CASSETTE RECEPTACLE LID (with Tape Yiew Window) ——— —
Opens wher Eject Button is depressed. To load a tape, depress Eject
Button and insert cassette with tape facing the heads (toward front of
machine) and close lid. When properly positioned, pressure from lid will
sel cassette.
EJECT BUTTON- —- —
Depress to eject cassette tape. Because the Eject Button will nol operate
during recording or playback mode, first depress the Stop Rey and
then the Eject Button.
MICROPHONE JACKS (Left/Right) —
HEADPHONE JACK
Accomodates stereo headphones of BL impedance for monitoring or
private headphone listening.
RECORDING KEY —
Depress this key and the Play Key simultaneously to effect recording
mode.
REWIND KEY—
Rewinds tape at high speed.
STOP KEY — ——
Depress to stop tape travel.
PLAY KEY
kúances tape for May back-or Tecort me Tit
FAST FORWARD KEY
Advances tape al high speed.
AL CORD
VOLTAGE SELECTOR (CEE, CSA, UL and LA Models not equipped —
with this facility)
See VOLTAGE CONVERSION procedure.
LEFT YU METER —=
Indicates left channel recording and pla back levels.
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—RIGHT VU METER
Indicates right channel recording and playback levels.
—_— FAUSE INDICATOR LAMP
Lights to indicate Pause mode,
LIMITER SWITCH
Sel this switch to ON position to limit recording input level and
prevent over-recording and cut distortion when recording at a high
volume level, Especially effective when recording from microphones at
close range.
—DOLBY NR SWITCH AND INDICATOR LAMP
Setting the Dolby NR Switch to ON position activates the Dolby circuit
to raise low level signals before they are recorded and lowers them
by preciesly the same amount during playback, thus reducing the ex-
trancous and superimposed noise, resulting in the reduction of tape hiss
to a completely inaudible level,
* When using a tape recorded with the Dolby process, it is necessary
that the switch be set lo ON position at playback also.
* “Dolby” and the Double D symbol are trademarks of Dolby Labora-
tories, Ine. (Under license from Dolby Laboratories, Inc)
TAPE MONITOR SWITCH
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—DIN JACK
Enables inter-connection with an external amplifier through
the use of a single Din connection cord,
* Monitoring through a speaker system during recording
cannot be accomplished when using the Din Jack;
however, monitoring using heapnones can be accom-
plished.
INPUT JACKS (Left/Right)
Connects to tape outputs of external source.
OUTPUT JACKS (Left/Right)
Connects to tape inputs of external amplifier or tape
recorder.
To monitor recorded signals or for playback, set to TAPE position,
and to monitor program source, set to SOURCE position. Switching to
and from TAPE and SOURCE positions during recording enables the
operator to compare signals just recorded with the program source (dual
monitoring) for a more professional recording.
* Monitoring through a speaker system during recording cannot be
accomplished when using the Din Jack; however, monitoring using
headphones can be accomplished.
\
—— RIGHT MIC/LINE RECORDING LEVEL CONTROLS
Controls right channel recording input level. Adjust while observing right
VU Meter,
-TAFE RUN INDICATOR
This directional signal indicates tape direction and speed, Thus, confir-
mation of Play, Fast Forward, Rewind, or Stop mode can be determined
at a glance,
MEMORY REWIND BUTTON
Set Index Counter to “000 and depress the Memory Rewind Button
for automatic stop from Rewind at any place on the tape.
POWER SWITCH
INDEX COUNTER AND RESET BUTTON
Tape indexing is made easy with this 3-digit Index Counter. Provides
an easy reference for quickly locating positions on the tape. To reset
to “000”, depress Reset Button.
PAUSE BUTTON
Depress to momentarily suspend tape travel during recording or playback.
Convenient for editing tape. Simply depress when a certain portion of
the program is not desired. Depress again to release.
DIRECT FUNCTION CHANGE CONTROL SYSTEM
This model employs full direct function change control
for speedy mode selection. The necessity of depressing
the STOP Key prior to changing modes is eliminated.
INTRODUCTION
Your new GX Head unit is made of the very finest
CASSETTE TRACK SYSTEM lt is important for the heads and the head block
area to be kept clean at all times as dust adhering
materials and incorporates the very latest in recording HEAD to these parts deteriorate sound quality. This model
and playback techniques. In addition to the features Ё + is equipped with GX recording and playback heads
outlined in this manual, AKAI's superior A.D.R (auto- SIDE B | TRACE à | and, while GX Head cleaning is not normally neces-
matic distortion reduction) System which changes | sary, if old tape or splicing tape, etc. is used
the recording equalizer characteristics according to es NE | TRACK 3 |(R) GX Head cleaning is also recommended.
the signal level of a certain frequency band to achieve SIDE A | N Core TRACK 2 | (R) ==
low distortion over an extended frequency range is SIDE A i Core TRACK 1 | CL) x —
also incorporated in this model. This together with `
/
many other outstanding features including a 3-head
system featuring AKAÏ's wear-free GX-Heads combine
to bring you the finest in cassette recording and
playback, We, therefore, urge vou to READ THIS
MANUAL THOROUGHLY BEFORE ATTEMPTING
OPERATION
VOLTAGE CONVERSION
Your machine is equipped with a Voltage Se-
lector which can be set to 110-120V or 220-
240V AC. This Selector is preset at the factory
|. Remove Switch Holding Plate Screws and set
switch to proper position according to area
voltage,
1, Re-position Switch Holding Plate and re-install
screws (plate covers voltage not in use).
Caution: CEE, CSA, UL and LA Models not
equipped with Voltage Selector.
This model employs a 4-track recording/playback sys-
tem. The first hart of the stereophonic recording or
playback takes place on tracks | and 2. The second
halt takes place on tracks 3 and 4 after the cassette
tape has been inverted. Recording and playback de-
pends upon the length of the tape (C-30, 30
minutes; C-60, 60 minutes, etc. ). Monaural and stereo
recorded tapes can be played back on either stereo
or monaural cassette recorders without any loss in
right channels together. This results in automatic
mixing of left and right channels from the stereo tape
tor monaural reproduction.
HEAD CLEANING
4
Turn off Power Switch.
. Remove cassette from receptacle and depress
cassette holder to flat horizontal position,
: eH ея quality. Because i ack wi : € ; A :
according to destination. However, the operator o ht ¿Meer ma RR is ¢ | o of НЫ ge ae 3. FAST rp i WHER FRAN pb A
is requested to reconfirm setting and, if necessary, rE M ee | CARTES 4) Es MS MODE toward front ©
réest ae followe: when a stereo cassette is played on a monaural machine and lifting upward.
| | recorder, the playback head will scan both left and 4. With Play Key depressed, clean recording/play-
back and erase heads with a cotton swab stick
dipped in Akai Cleaning Fluid (from Akai Head
Cleaning Kit HC-500). Also clean pinch wheel
and capstan and other parts over which the tape
travels, (Heads are most accessible when facing
the rear panel of the recorder)
If 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 heads as well as parts over
which the tape travels become slightly magnetized
and as a result, the tape is partially erased at high
frequencies. Therefore, head demagnetizing is recom-
mended periodically.
Turn off Power Switch.
2, Remove cassette from receptacle and depress
holder plate to flat horizontal position.
3. Remove cassette lid (tape view window) from
cassette lid frame by bringing toward front of
machine and lifting upward.
4. With Play Key depressed, demagnetize heads and
other parts which the tape contacts with a bulk
Head Demagnetizer by bringing the prongs of
the demagnetizer close to the heads and mak-
ing small circular motions over the entire head
block area. (Heads are most accessible when facing
the rear panel of the recorder).
+ Do not bring the demagnetizer close to the VU
Meters.
TAPE ERASING
Any signals previously recorded on the tape will
be automatically erased as a new recording takes
place, For erasing only, no plugs should be connected
to the input jacks and Recording Level Controls
should be kept at minumum, For quick and complete
erasure, a bulk tape eraser is recommended.
LUBRICATION
Although the Motor of this model is sufficiently
olled for prolonged use, for maximum service and
optimum performance, please take your machine to
your local authorized AKAI agent for occasional
lubrication.
TROUBLE SHOOTING CHART
The conditions listed below do not indicate mechanical failure of your unit. If your machine exhibits any of these conditions
check for trouble as indicated.
SYMPTOM
TROUBLE
REMEDY
Recording Key will not Func-
tion,
x
Tape will not run.
Noisy sound.
* Cassette is not loaded.
+ Cassette break-out tabs are removed.
*Plug or cover cavities,
* Power is not being supplied.
* Tape slack.
* Heads are magnetized.
* Heads are dirty.
* Connections are incorrect,
* Tape Selector Switch is set incorrectly.
* Check power cord and Power Switch.
* Take up slack as mentioned in OPERATING
PRECAUTIONS.
* Demagnetize heads following head demag-
netizing instructions.
* Clean the heads following head cleaning in-
structions.
* Set to CHROME position when using chro-
mium dioxide tape, and to LOW NOISE
position when using low noise tape. Depress
both switches simultaneously when using
FeCr tape.
Previous recording will not
Era,
Distoried sound.
* Erase head dirty.
* Clean heads following head cleaming instruc-
tions,
Playback cannot be effected.
« Recording level is 100 high.
* Connections are incorrect.
* Controls are not properly adjusted or po-
sitioned.
* Pause Button is at depressed position.
Recording will not take place.
* Dirty recording head.
* Connections are incorrect. 7
* Controls are not properly positioned or
adjusted. ия
* Pause Button is at depressed position,
* Use peak level indicator as explained under
CONTROLS.
| * Check external amplifier controls,
* Release
* Clean head following head cleaning instruc-
tions
* Check external source controls,
* Release
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,
CONNECTIONS FOR PLAYBACK
PLAYBACK
Make the necessary connections as shown in CONNECTIONS FOR PLAYBACK.
. Connect power cord and turn on Power Switch.
Depress Eject Button and load a pre-recorded tape.
Set Tape Monitor Switch to TAPE position,
. Depress PLAY P= Key to begin playback.
. Adjust Output Level Control and external amplifier controls.
Automatic Stop will be effected at the end of the tape. To stop tape
travel during performance, depress STOP IH Key.
К пон»
The Din Jack can be used instead
of the Line Jacks. This enables
recording or playback with a sin
gle Din Cord.
STEREO AMPLIFIER
CONNECTIONS FOR RECORDING
When using the Din Jack, recording input level
15 adjusted with Microphone Recording Level
Controls,
When using the Din Jack, monitoring through
the speaker system cannot be accomplished;
however, monitoring using headphones can be
accomplished,
Connect desired source with
RCA/RCA connection cord.
STEREO AMPLIFIER
TURNTABLE WITH
MAGNETIC CARTRIDGE
ET OJ"
"000 © 0000
STEREO TUNER
RECORDING
Connect desired program source to appropriale inputs as shown
lee КО РУ СО ВЫ ГЫ:
A. Connect power cord and turn on Power Switch.
B. Depress Eject Button and load a tape (new tape gives
best results),
Set Tape Monitor Switch to SOURCE position.
Set Index Counter to “000”.
Depress Recording (REC) Key,
Adjust and balance recording input level with appropriate
Recording Level Controls while observing VU Meters,
When an optimum recording level has been determined,
while holding the Recording (REC) Key at depressed po-
sition, depress PLAY P Key to begin recording.
* Automatic Stop. will be effected at the end of the tape.
To stop tape travel during recording, depress STOP E Key,
* Dual Monitoring(comparing signals just 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 прог level for professional
recording results.
"DO
=
MICROPHONE/LINE MIXING
Recording from two separate sources can also be accomplished
with this machine, For this operation, connect microphones to
Microphone Jacks and other source to Line Input Jacks.
Follow above procedure, adjusting microphone input with
Microphone Recording Level Controls and line input with Line
Recording Level Controls,
* Mixing can also be accomplished by using the Din Jacks
and the Line Input Jacks. In this case, the Din input level
is adjusted with Microphone Recording Level Controls,
STEREO TAPE
RECORDER OR TAPE
DECK
RECORD PLAYER WITH
CRYSTAL OR CERAMIC
PICK-UP
TECHNICAL DATA
Track System ... seca Y track 7 channel stereo system
Tape Speed... . 1-7/8 ips
Wow and Flutter . empre 0.055% WRMS
Frequency Response ... ve J) HZ to 15,000 Hz £ 3 dB using Low Noise Tape;
30 Hz to 16.000 Hz + 3 dB using CrO, Tape;
30 Hz to 19,000 Hz + 3 dB using Fe-Cr Tape
Distortion ..........e-== ww... Less than 1% (1,000 Hz 0 YU)
Signatto-Noise Ratio .............. Better than 51 dB (measured via tape with peak re-
cording level of + 5 YU).
Dolby Switch ON: Improves up to 10 dB above 5
KHz,
Erase Ratio .. ve Better than 70 dB
Bias Frequency … van LUD. KHZ
Heads .. sonsosacanvesmneuseusacccaneuss LA} : Three head system includes One Glass and
Crystal Ferrite REC/P.B. combination Head,
and One Ferrite Erase Head
MOLOIS ...……i…vcconeseumenvassurerenresssausens (1): A.C.Servo outer rotor motor.
Fast Forward and Rewind Time.. 75 sec. using a C-60 Cassette Tape
Output Jacks ..............resosnenncieres Line (2): 0.775 Y (O VU) Required load imped-
ance: more than 20 K ohms
Phone (1) : 30 mV/8 ohms
Input Jacks... Microphone (2): 0.3 mV/8 K ohms
Line (2): 70 mV/100 K ohms
Din FNCÉ …cccorvansavocacnssscnesscaevsees 0.775 VI? MY
Semi+Conductors ....... e... Transistors 60, Diodes 51, FETs 4, 1C 1
Power Requirements .................. U.S.A, and Canada (CSA, UL, and LA) Models: 120
Y, 60 Hz only.
CEE Models: 220 V, 50 Hz only.
Other Models: 110 to 120 V/220 to 240V, 50/60
Hz (Switchable).
Power Consumption ......—.=.===—.... 30 W
Dimensions air PAI20WO x 142(H) x 301 (D)mm
(17.4 x 5.6 x 11.9")
Weight -...--== ==. error 0a 0 KE (18.9 Ibs)
* For improvement purposes, specifications and design are subject to change without
notice,
STANDARD ACCESSORIES
DE EE IE land re 1
Orerators ERIN +i ero mó ao ar e |
MANUFACTURED & DISTRIBUTED BY
AKAI ELECTRIC CO, LTD.
AKAI TRADING CO. LTD.
12-14, 2-chome, Higashi-Kojiva,
Obra-ku, Tokyo, Japan
AKAI AMERICA LID.
2139 E. Del Amo Blvd, Compton, Calit… 90220, USA.
TELEPHONE:(213) 537-3850
TELEX: 67-7494
Printed in Japan
M11A7540775D1
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