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A
This GX
Playback
Surround Stereo
Head Ouadra-Sync 4-Channel
performance!
(a\1
4-Channel/2-Channel Mode
A
2-Channel
or
fus
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Stereo.
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Tape Dect< marks the
Selector Switch
tape speed.
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instantly converts
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of
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the unit for 4-Channel
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GX HEAD FOCUSED
FIELD
RECORDING
SYSTEM ASSURES LASTING N
MACHINE PERFORMANCE
The GX400D-SS
recording/playback heads
formance.
The cores
ferrite) Heads
which has
proven
core materials.
single
crystallized element is
thus, there
eventually cause cracking or
Gap environs
."-
*
employs GX
of these GX
are made
of
far superior
composite
Unlike
can be no material
of
Single Crystal Ferrite
-1:
4-CH
for
incomparable
(glass
low
noise
to conventional
non-pourous
chipping of material
i';t'.-'.'P.'
r
After equal
actual
size.
ure/Enlarged
to 800
EW
2-CH
and
per.
and crystal
ferrite
crystal
materials, this
head
and,
separation
Head
aa
times
from
the head
magnetic
properties
utilized for
resulting
istics.
The
to
an
head-to-tape
only
magnetic field
to
the elimination
in
nature
construct a
acute angle head
to the
GX Head is
same
extraordinary
surface is
particles,
lasting
NEW
always kept free
thus assuring
new machine
OUADRA-SYNC R ECORDI
TECHNIOUES FOR
SYNCHRONIZATION
This
model incorporates
Ouadra-Sync recording
figure,
on
through headphones
head. Therefore,
several kinds
causle
the short
of
travel from
head,
sound synchronization
However,
sound
head,
switched
Track
SWITCHES
another track.
can
the 3
rehearsals
man
The
as
with Akai's
monitored
i.e.,
any of the recording
to
1,2,3,
perfectly
be
remaining
or
combo
uses to
unlimited
surface. This
peculiar
high
electronic conversion
better high
of this
perfectly
contact
part
range
material
lineal
surface
wherein
of
the head's sharply
for
improved
enabled Akai
of sound drop-out.
mounted
and set in
hardness
of
wear-free
performance.
PERFECT
Akai's neur
conventional
system.
units,
comes from
to
date,
of multiple
eventhough there
recording
time
necessary for
the recording head
was impossible.
new Quadra-Sync
produced
is
playback
for
or a
mode
4
&
OUADRA-SYNC
monitoring
program
Thus,
synchronized
tracks. Use for
recording
quartet
at will
sessions,
with
which Ouadra.Sync
at the
imagination
also means
to
frequency
shallow head
countour for
the tape is
head
pure glass
so
dust
characteristics
that the
ferrite
can be
capabilities
character-
engineers
gap
perfect
exposed
focused
sensitivity
The
core
of the
that the head
and magnetic
NG
SOUND
and unique
As shown in
sound monitored
playback
the
systems,
the tape
playback
to
the
the recording
head
tracks
by means
system,
can be
of the
SELECTOR
from
during recording
material
on one
with
any or all
professional
or to form
a single voice,
can be
applied
the
of
operator.
of
were
track
split
one
a
etc.
CONVENTIONAL
and
and
the
for
the
be-
to
AKAI'S
DUAL
NEW
MOTOR
the
TAPE TRAVEL
REDUCES
rymmetrical
A completely
on
dual capstan
tape
of
reverse
elsctronic
Akai's
are
employed in
system, the voltage
UNIT
Playback
(time
gap
between recording
and
playback
OUADRA.SYNC
CAPSTAN
DRIVE
SELF.LUBRICATING
GUARANTEES
AND DRASTICALLY
WOW
AND
FLUTTER
head
symmetrical head
system
travel
and
playback
govorning
exclusive inner-rotor
this
layout
bloik
provides
identical
characteristics.
model
2-channel forward
circuit
. . .
for
capstan drive.
supplied to
Head
headf
SYSTEM
SYSTEM
AC SERVO
FRICTION
.
. .
layou
block
smooth,
AC
the
frictior,
Servo
stator
AND
FREE
Motor is
With
winding
and
rhis
i
.c
a
,r-
i't{*e+t..}t.
F'
L"
ar-..iuifr::.
l&,
L'
rsldIi'C*il;,
dliir*,ii{iei
K.4:J*
vLt
pulse
is
maintaining completely
tions.
circuit not
unaffected by
ideal torque is
protection
tape speed
rclf-lubricating . . .
Further,
self-lubricating.
with cellulose
rior of the motor. While
revolutions are
circulating speed is
rrttor
trouble
does
oil
The cellulose
qril
{
lv-. r16llC€.
Two 6-pole eddy current
motors
motor drive
The
espstan
und
detected and
The use of this
only
external
from
fluctuation
this
outstanding motor
fibers
revolutions
resulting from
not occur.
purified
in deaning
fibers
clean
during the circulating
fvolutionary
prevent
vibration to
system.
combination of
drive
system also drastically reduces
flutter.
powerful
means
attained,
superfluous
is
Two
oil
are installed
always
naturally adjusted
and temperature.
process
also
long lasing
this
-\j.#""
'L\,w.
"li,bi;*"u"
precisely
stabilized motor revolu-
that
load
practically
circulating mechanisms
the
smooth and
oil
act as
AC
controlled for
electronic
proper
conditions as
but also that
governing
revolutions
wel
perfect
hum is realized
non-existent.
is
completely
within the inte-
is
oil
circulating,
shaft
stable.
according to
Therefore,
circulation suspension
.
. .
filters
to keep
process,
adding to
new machine
inner rotor
complete
Servo
Motor
reel
the
and dual
drive
perfect
wow
VL'
1. :6riTlF,{ryl!t.l
per-
1::tiilFs?{lrt{?"tq*TYirrp4r,
AKAI'S
DAMPED
TAPE
I
as
and
1O-1/2"
recording
cient
to
Oil
and even
the
prevent
of
When
ordinary
air-damping
the
tape from
only
not
normal
is
no
around the flange,
vents
take-up.
r
ri{rr
EXCLUSIVE
TENSION
reels
are often used fbr
playback.
and
had
care
prevent
possibility
to
tape damage
then, there was
of an
this,
the
GX-400D-SS is
Akai's One-Way
levers
these
pressure,
mechanism is
sudden tension.
in
the
case
of
applied when the
pressure.
slack and an
danger of
Consequently,
operating key is
the
the tape.from
t;4+rir:"
ONE-WAY AIR
LEVERS
However,
be
exercised
on
concern when
accident during tape travel.
Air
Damped
drop, they are lowered
but when
activated to
suddenly
tension
tape
being
Further,
etc.
slanting,
PROTECT
{
I
professional
to date, suffi-
in
handling
the
take-up reel side,
equipped with two
Tension
tension is
This
applied
applied,
protect
airdamping
tension and
arrn is lifted
even when the tape
depressed, there is
broken,
tlris
system
assuring even
"r
VlJ
15 ips
the tape
it came to
Levers.
with
the
the
works
with
or wound
pre-
tape
'{-t1i*il
DIVERSI FI ED AUTOMATIC
AND
REVERSE
This
modet is
REVERSE
provides
ra^rind,
continuous
or
recofd/reverse
back.
4-CH
single
continuous
DIRECT FUNCTION
SYSTEM
the
control system of this unit is
function
direct
ing
design
for
The necessity
changing
one-way airdamped tension levers,
damaged.
SOUND
Four
jacks
phone
level
Quadra-Sync recording
desired.
TAPE
To
USE OF LOW NOISE
This
recording time
The
frequency
modes
MIXING
each
and controls facilitate
mixing techniques. Professional
controls can be varied
SELECTOR SWITCH FACILITATES
circuit varies the
use of low noise
response.
CUE SWITCH
is
PRECISION
When
the
forward
touch
or
the
playback
on the tape
editing.
Pause
suspension
The GX4OOD-SS
Control
during
equipped with
SELECTOR which
single
record/rewind,
playback
repeat
forward
play,
FOR
SPEEDY
change
smooth
of depressing the
is
eliminated and because
separate line
according to the tape
AND PAUSE
CUEING
Cue Switch
rewind mode,
head
are easily
facilitating
recording
ltu
l:i;l*;,.
r,:,.,:.r:
:l
"':*'"
'-
l'..d
iil3
tQ:.t
$
REPEAT
REPEAT/
a
by a simple setting
continuous
or
or record/rewind/
as well as
reverse
and
record/continuous
or
CHANGE
MODE
system of
and speedy mode
and microphone
varied line
for
equalizer
tape will improve high range
located for
during
special
TAPE
peaking
CONTROL FOR
TAPE
AND
is depressed
the
tape
surface.
is
also equipped
momentary tape
playback.
or
playback/
2-CH single
playback,
single
play-
CONTROL
SELECTION
a one-touch
superior
engineer-
selection.
Stop Key before
of the
the tape is
input
and micro-
type input
regular
sound
effects as
volurne
being used.
EDITING
during fast
positioned
is
Thus,
recordings
faster
and
easier
with
travel
not
or
at
to
AUTOMATIC
Perfect operating
matic stop
At the end of the
model.
ir
circuit
.ffect automatic
unit),
entire
to
Switch
REMOTE
All operating
controlled
remote
RC-l7.'Plugs
unit
panel.
rear
OTHER FEATURES
lndividual
'
trols, lnputs,
*
Front and
Reel Size Selector and
'
Reel Hub Adapters
r
Din Jacks with
STANDARD
EmptyReel
15 ipsReel
STOP AND SHUT.OFF
and
automatic
activated
shut-off
simply
position.
ON
safety is
to stop
set
shut-off
tape, an
(to
the Automatic
with the auto-
assured
functions
automatic
reel movement.
the
cut
CONTROL
ftrnctions
by
into remote
this model can be
of
Akai Remote Control
using
control
INCLUDE
and
lndicator
Highi
precise
Headphone
standard
lnput
Low
VU Meters, Con-
Lamps
accessory
Selector
large
and
Rear Channel
ACCESSORIES
."... .........1
HubAdapters ........2
Connecttioncords
Fuses .1 set
Spare
Operator'sManual
power
Shut-Off
socket on
Jacks
.........1
this
of
stop
of
15 ips
....2
OI L CIRCULATING SELF-LUBR
MOTOR
complements
. .
.
perforrnance.
Felt
To
the
Cellulose
.!!
f iber
GX Head
ICAT!NG
policy
Akai's
even in a single
general performance
The
influenced
motor
the
depend
ance
shaft.
Thus,
selected
perience
as strict
not spared
outstanding
Such skill, aside
irrside
with
a
0.1Op
Further,
in
surface roughness of
a
smoothest
performance.
motor
by
shaft. Smooth
greatly
is the case of
as
materials were used and our
newest engineering
and
quality
in the design and development
motor.
page,
resulted
hardness
60o
(10/100,000
ultra
an
ever in motor.
of consistent
Motor
Shaft.
of
capability and
revolutions and
upon the
all Akai
control and
from
precise processing
features
the
in
motor shaft structure
a
(Rockwell
mm) degree of
polishing process
precise
less than 0.05p
revolutions
qu.ality
a'Tape
quality
parts,
techniques as
outlind on
C
is evid
greatly
is
Deck
especially
endur-
Inotor
of the
carefully
vast
of
Scalel
and a
roundness.
resulted
for
and endurinE
-\
)
by
ex-
w'ell
were
this
the
the
TECHNICAL DATA
Track
System
Reel
Capacity . . Up to 1o.112" reel
Tape
Speed . . .
$low & Flutter
Equalization .
Frcquenry
.
.
Response
Distortion
Signal to
Erase
Noise Ratio
Ratio .
Gross-Talk
..4 track
15,
.
. Less than 0.035% FIMS at 15
Less
Less
Correct equalization
recorded to
.2O Hz
.
20 Hz to 26,000
30
20 Hz to 26,000
20
30 Hz to
Less than 1%
. . Better
.
.
. Better
Better
EiarFrequency .. .... 10O kHz
Heads . . .
(41:
4
channel stereo system
and
7-112
than
than
Hz to 18,000 Hz
Hz
One
3-3/4
0.05% RMS
0.08% RMS at 3-3/4
NAB curve.
to 27,000 Hz
to 24,000
than 52
than
than
Hz
Hz
Hz
16,000 Hz
(1000
d8,55
70 dB
40
dB
4chl2ch
GX
ips
(t3
(t3
(t3
(t3
(t3
(t3
Hz
for
ips.
7-'l
12
playback
(Low
dB)
(Low
dB)
(Low
dB)
(Regular
dB)
(Regular
dB)
(Regular
dB)
"0"
VU)
using
ips.
ips
Low Noise
at
dB
Recording Head,
tapes
of
Noise Tape),
Noise Tape),
Noise
Tape),
Tape),
Tape),
Tape!
Tape
.
One GX
One
fVbtors . . .
Forward
Fast
(3):
2er!d,r'current rnotc!.s
& Rewind Time . . . . 75/90 secs. using a 120O
Output Jacks
lnput
.
Jack Microphone(a):
at
. . Line(2): 1.23
impedance more than 20 kO),
Phone(1): 50 mV/8
Line(4):
Jack
Din
Semi-Conductors . .,.. Transistors: 95, Diodes: 88
lntegrated
Power
Power
Circuits
Requirements
Consumption .. ..
Dimensions
Weisht
.......
.
.. 160
.. ..457(W)
. . . 31.2 kg
. 0.6 V/60 mV
100
118
4ch/2ch Playback Head,
rear
each
AC Servo Motor
60/50
V to24O
W
x23.2 x 9.5")
ch and
Hz
("0"
V
0.5 mV/4.7 kO,
100 mV/50 ko
(hish)/1O
V
A.C.,50/60
x
590(H)
(68.7
lbsl
front ch
for
for
VU)
a
mV
x
240(D) mm
Heads
Erase
Capstan drive,
reel
Cri,re.
ft.
Tape
(Required
(low)
Hz
J
load
For improvement
"Surround
Stereo" used
purposes,
with
specifications and design
permission
Vangard Records.
of
subject to chango
wlthout notice.
co4M7406277
DISTRIBUTED BY
AKAI AMERICA, LTD.
E. Del Amo
2139
Compton, Calif.,
TELEPHOI'IE
TELEX:67-7494
Printed
Blvd.,
SO22A, U.S.A.
:
537-3880
{213}
Japan
in
)
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