Akai GX-370D User Manual

Gi
STEREO TAPE
DECK
REVOLUTIONARY GLASS & CRYSTAL
AUTOMATIC
Heads
unique
both normal and
brings out epoch-making
this
stability and reduced
level control and realistic sound reproduction. Sound unlimited
many
and one GX
symmetrical arrangement
the maximum response
model
for
variety
outstanding
& MANUAL REVERSE RECORDING & PLAYBACK
of
of
three
these
GX
combination
performance
high
Glass &
employs
Playback Head, for the finest
reverse directions. The
direct capstan drive Servo-Control Motor
the completion of an ideal drive mechanism.
wow
of recording techniques.
features of this
flutter. A real Compute-O-Matic
and
Dub-Sync
quality
MANUFACTURED
stereo
& DISTRIBUTED BY AKAI ELECTRIC
Crystal
in recording and
heads
and mode change Remote Control Socket is
tape deck.
FERRITE
Ferrite
provides
these outstanding heads
of
low
noise tapes for
two
and
Moreover,a
Mixing,
HEADS
Heads
playback quality
identical
eddy-current Outer Rotor recording level
Sound-On-Sound, Sound-With-Sound
recording and
stout lmpedance
LTD./AKAI TRADINC
CO.,
including two
and
and a
startling
progress
control
Record/Erase
endurance. Further,
playback
Tape
in sound
Motors
Roller
CO., LTD.
provides
for
completely automatic
OHTA-KU, TOKYO,,IAPAN
GX Combo
characteristics in
Selector
quality.
are employed
also one of the
Switch
tape
speed
provide
the
An
in
an
IIllW THE
NEGllNililO
tEUEt GA]II
BE
SI
you
Are
classical music? That's high range high
noise
finding
notes
frequency
ln
tape.
today's
and
signals
order
because today's modern
with tape
was
record the high
to
recording level had to be tremendously
Akai has
Crystal high range 20,000H2
words,
other
can be
dynamic
THE SECRET
cessing technique and
the
GX
glass.
The superior
structure of the
oblong
frequency
dynam
poor
solved the
Ferrite)
Head. With
frequencies can
with low
with
accomplished
range
and
of this success
Head is made
head
radius. This
loss,
eliminates
ic
range.
signal-to-noise
problem
noise
completely
this
over the
excellent
the
of
h igh range characteristics
gap
focused-field
modern
music more
difficult to
music contains
recorders
problem
a
lowered
to around
tape decks to date,
and
even with high
range notes in
-10d8
ratio.
"single
in a
new
the
be
tape
GX
recorded
even while
new
entire
signal-to-noise
in
lies
swoop"
Head
in
all their
GX
frequency
the head
with the
employed in this
true
recording
high fidelity recording
Head,
spectrum
ratio.
materials,
focused-field recording system.
single
which
undue
crystal
focuses
recording
equalization
ferrite
the
mounted and set
is
and
contributable
are
magnetic
system
and
record than
loss
performance
fidelity,
true
resulted
which
(Glass
GX
model,
fidelity
at
OdB
for
covering
level. ln
a
superior
The core
to
field into
minimizes high-
achieves wider
a sharp
more
low
the
wide
pro-
the
Recording Tape:
of
in
&
OVU
-2
-4
-10
co
!
-12
o)
-14
0)
O)
c
U
-20
0)
t
-22
-24
(dB)
levels
AKAI SRT
high-frequency
and
noise
low
a-
I
-''r2
ot3
a-
characteristics
tape, distortion
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t
10
15
less
O.7%
than
llkHz'0'VU)
machine
GX
-oIt-a-a-a-a
Conventional machine with switch-over
-r----
Conventional
-
with switch-over bias
machine
speed: 7-1l2ips
Tape
Frequency
(kHz)
permalloy
-
-
-
permalloy
head
equalizers
head
of
in
Recordi
ng equal
izer
characteristics
machine's
GX
for low noise
------
GX
for standard tape
la-a-a-a-
Equalizer f or Conventional permalloy
equalizer
tape
machine's equalizer
head
THE BEST SOUND
has
It
become
the demanding
wear
and
question
The
examining the distinguishable
experiments
actual
for
ously
particles
that this situation
ln the
phenomenon
this
single
only a
was
Akai
audible
crystal
single absolutely
free
characteristics
feature coupled
This
the ability
revolutionary GX
the
performance
range
well
characteristics
magnetic loss
was
poly-ferrite
difference
period
a
eventually began
would
case of
the single
was
crystallized
reduce the
to
able
level. Due
ferrite
not
does
retain the
to
FOR A LIFETIME
that
ferrite
known
of audio
is
small.
"wh
wherein
of time,
to the
adhere
are obtained.
permanently.
f
ich
errite
the
and
hardness. However, as a
in
poly-ferrite
it was discovered
separate.
to
gradually
crystal
non-existent.
element, through a
plus
with
excellent
Head
ferrite,
noise
nature of
glass
of the
tcl the
no loss
first
promises
most
is the
head material;
perf
is
single
ectly
crystal
suitable
ideal
ferrite,
result of
was used over and
that
Thus, Akai
lead
worsen
and
however, Akai discovered
Further, because
peculiar
head
to
material construction
the
same
surface,
h igh
of
period
low
distortion,
to
engineering
unique
ferrite
to
characteristics),
wear
thus
f
requency capabilities.
for
not
merely
was
numerous
continu-
i.e.,
?".
substance
it does
From
there
over
minute composite
gap
realized
damage.
engineers
head
that
is
it
cornprised
process,
completely
a
(noiseless
dust
preeminent
signals
That
wide
and
wear-
results
is
say,
to
dynamic
no
of
in-
I
i
Tape
Speed:
7-112
,!r'
/./
Frequency
environs
Gap
in
of Single
Crystal Ferrite
ips
(kHz)
Head
Gap
*
After equal use/Enlarged
environs of
to
800
Poly-Ferrite
times
actual size
Head
$;ET
HIflHru
HffiHEM
AUTOMATIC
MANUAL
&
RECORDING & PLAYBACK
Automatic
playback
necessity
nuous
reverse
effected
foil
at
desired
passes
foil
manual
and
f eatures complet6ly
inverting
of
reverse recording
reels.
between two
by simply affixing a
reversing
the sensing
points.
poles,
The Akai reversing system
reversing
effected, the rates from
ment
correct
systems
until the exact
tape
always accurately
noise
el
A
your
The unique
as
im inated.
manual
convenience.
the
reverse key has
head block
eiiminates
ly
accurate tape speed- The
metr,icity
the
and Further, the Recording/Erase
are problem.
of
guides
tape
playback
stationary
in
that
pinch
while
wheel automatically
the capstan, suspending
motor revolutions f
is
speed
reached.
Thus, tape speed
maintained,
[:i
1.,
:
i-'r
i
I i:'i..i:,, li\
a
block
the
also been
)
|
il,i]
il
[:itJ
arrangement
short
smooth
identical
in
alignment
direction of
and symmetrical
provides
tape friction for
head
the
guarantee
characteristics
that head
so
REVERSE
eliminate
way or conti-
One
points
of
can
sensing
piece
As the sensing
reverse is effected.
from
differs
reverse is
other
being
sepa-
reel move-
and
annoying
is
tape
changed
provided
,iir
equi-distant sym-
lay-out
GX
[:,
lXr
E$li
tape
both
Combo
V
li A
B,l1\
of
path
precise-
and
well
as
recording
directions.
Heads
is
never
the
and
and
the
for
q*]
as
Model 3-motor
important making
Motor
be
the
detecting
ture mechanism.
devices
are eliminated
Because
trical
perfectly
or
speed and reduced
The two
is
supply
stretch
is
starting
t.l,i)lVil FIU
ll*-
Model
known
use
input
automatic
avoid troublesome
ment system
cult to
distance
The Akai
trol system
system mum
other
ln
other
Button is
stops
colnes
ately
The Tape
ed
on
signal
a
made. A simple
(for
ing
immediate indication
convenient
provided
Sound-on-sound recorded
accumulating
single
professional purposes.
Sound-with-sound
on one
material
language
GX-370D employs
drive mechanism.
capstan
direct
capstan
which combines'
ordinary
eddy-current
toothed
cog-wheel
Thus,
such
as drive
and tape
of the speed-adjusting
control
when
level
was
circuit, revolutions
adjusted for
eddy-current
and
take-up
and
allow
torque.
-O^
I
ffi
ilM
GX-370D
Akai
Compute-O-Matic
automatic
is
desired.
gain
control
popu
very
produced
only flat
wow
smooth
A-$- [i
is
distinguish voices
from
or
close
Compute-O-Matic
is
real
a
which
automatically
level
sound
levels
at
"O"
adjusted.
front
input
monitoring recording
to
are then
words,
when the
depressed,
maximum.
VU,
and
and Source Monitor
panel
enable
and the actual recording
switching to
source)
instant it
the
panel
front
for monitori
is
material
track
track
on
training, etc.
from
many individual
as
is
as
is
while
the
opposite
a The
motor
drive
drive
the
winding
motor
into
the
usual instrumental
idler,
belt,
speed
extremely
flutter.
and
outer rotor
reel
drive
tape
C
equipped
adjustment
Formerly,
which
man
lar.
was developed
input
ual
However,
sound, it
recorded
range.
recording
automatic
be recorded
adjusts the
adjusted
Compute-O-Matic
the recording
This
maximum
levels.are
other
instant
and
and TAPE
is
of recording
headphone
ng.
the
transfer
one track
desired.
the recording
Use for fun
monitoring
track.
f irst
quality
rate
most crucially
is
an epoch-
Servo-Control
control
and
speed
a
single
a
struc-
flywheel,
is
completely
etc.,
stabilized.
elec-
are always
accurate
eliminate
travel
tape
motors for
tape
and ideal
with the well-
system for
of recording
d system
level
adjust-
because
was
called
th is
diffi-
from
level
and
"o"
to
proportionately.
con-
efficient
maxi-
VU
and
indicator
level
proportion-
Switches
made)
provid-
comparison
f rom
SOURCE
(for
monitor-
provides
being
quality.
jack
is
also
previously
of
to
another,
recordings
on
of material
pre-recorded
Convenient for
Set
be-
BUILT-IN
Another
built-in
pendent
of
controls
microphones
be blended
tape.
accompanied
PROFESSIONAL
to
Two large
Meters are
accuracy
back
a
When
stop
lf the
the
the end of the utilized
:
This
control system for
necessity
chanEing modes is
controls
lights
of
With
A
modbs
control socket control
equipped
the handy extra
for connecting
is inter-connected
automatic shut-off
mach ines.
a
or
include
Counter with Reset
locating
ctor f
nections,
SOUND MIXER
important
microphone-line
line
and input
and
and signals
recorded
and imagine
Just
by
your
ffi
independent
positioned
in
checking the recording
levels.
the
tape comes
is
circuit
power
,,
',1
model
which
optional
or world-wide
activated to stop
Automatic
the
of
tape.
the unit is left
when
lt,,.l'..'t.',,
''i
employs
of
depressing the
are equipped
indicate
accessory
can
remote-controlled.
be
can also
dubbing from
with the same
outlet on the rear
to
Pause
Control for
recordings,
of
etc.
feature
of this
mixing
microphone
jacks
from
simultaneously
recording
favorite
circuit.
recording
enable
other
your
orchestra.
TVPE VU MIETERS
illuminated
and
panel
front
on
to
the end,
Shut-Off
entire
Button is
unit
will
the
reel
A convenient
unattended.
''.'
mode
function
selection.
a direct
speedy
Stop Key
eliminated.
with
each
operating mode.
individual
RC-16,
Further,
all operating
be used f
another
type socket.
the
other machine,
with
can
Button
Universal
operability,
tape recorder
the
Shut-Off
be effected
editing,
tape
for
easy
Voltage
in
D
is
model
lnde-
level
signals
from
sources
on the
voice
own
provide
to
play-
and
automatic
movement.
depressed,
be cut
off at
feature
to
,,,-,1,',..'
change
The
before
colored
Th is remote
remote
or
Further, if
panel
is
used
because it
Switch,
on both
lndex
and speedy
Sele-
Jack con-
the
to
VU
be
the
STANDARD
ACCESSORIES
ConnectionCord..
EmptyReel
SensingTape
TECHNICAL DATA
Track
System .
Reel
Capacity
TapeSpeed
Wow
&
Equalization
Frequencv Response
Distortion
Signal-To-NoiseRatio...
EraseRatio ... BetterthanT0dB
Bias Frequency 10O kHz
Heads
Motors . ......
Flutter
..
. ....1
4-track 2-channel stereo/monaural Fast Forward
.
UptoT"reel
..
...7-1l2and3-3l4ips(1O.5%l
Less than O.O7% RMS at 7-112 ips Less than 0.10% RMS
. . . Correct equalization for
recorded to NAB curve.
i;-:,'rH#.oJ3i
dB) at3-3/4ips(Akai SRTTape),30H2 to DinJack
24,OOO Hz
Tapel, 30 Hz to
ips(RegularTape)
Lessthanl.5%{1,OOOHz,,O,'VU}
....
Betterthan50dB
(3):
TwoGXcombinationrecording&erase
heads, one
(3):
2-speedservo-controlouter-rotormotor
for
direct
eddy-current
supply and take-up reel
3; ,l:t"til,$.t;1','S
(t3
dB) at
19,000 Hz
GX
capstan
outer rotor motors for
......
33/4 ips
at
playback
7-1
playback
drive, and two Gpole
of tapes
ips
12
(+3
dB) at 3-3/4 Diodes: 49
head
drive.
1 1
(Regular
SpareFuse Operator'sManual
&
...lset
.....1
RewindTime.......60l75sec.usinga1,200lt.tapeat6O/50H2
RecordingCapacity..... Twohoursstereorecordingusingal;200ft.
Output Jacks. . . Line
rnputJacks
...... O.4
tape at load impedance: more than
Phone
y,Hi!i:i'3J'*"iit
V/70mV(high)7mV(Low),68S-1,
ips.
3-3/4
1.23 V("O" VU)/1O0 $l, required
l2l:
(1
):
30 to 40
mV/8
O
t
TYf
20
-"
kO
Semi-Conductors....... Transistors:65
lntegratedCircuits .....2
PowerRequirements....
10OVto24OVA.C.,50/60H2
PowerConsumption.... 130W
Dimensions ....445(W)x5O3(H)
Weight.
'."..25'5kg(56
l'18'2x2O.5
x252{D} mm
x 10-3")
lbs.)
*For
improvement
purposes,
specifications
and
design are
subject to change
without
notice.
MANU
AKAI AKAI
l Z. 1
02672ADM1
FACTURED
&
ELECTRIC
TRADING
2.chome,
4,
Ohta.ku, Tokyo,
Printed
Higashi-Kojiya,
in
Japan
1/D1M1172
DISTRIBUTED
CO.,
LTD.
CO.,
LTD.
Japan
BY
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