Akai GX-635D Service Manual

I.
TECHNICAL
DATA
TRACK
SYSTEM
REEL CAPACITY
TAPE SPEED
WOW
& FLUTTER
FREQUENCY
RESPONSE
DISTORTION
(1.000
Hz
"0"
VU)
SIGNAL
TO NOISE
RATIO
ERASE
RATIO
CROSS
TALK
CHANNEL
SEPARATION
BIAS
FREQUENCY
HEADS
MOTORS
REAL
TIME COUNTER
FF & RWD
TIME
OUTPUT
JACKS
INPUT JACKS
DIN JACK
DIMENSIONS
WEIGHT
POWER
REQUIREMENT
*
Specifications
determined with
Akai
LN-150-7 or SCOTCH #21
*
For
improvement'purposes'
specifications
and design
are subject
4 lrack
2 channel
stereo/monaural
system
Up
to 10-l/2"
reel
19 cm/s
x0.8%
(7
-l12
ips)
9.5
cm/s
xl.0%
(3-314
ips)
(Pitch
control: more
lhan
t6%)
Less
than 0.03%
WRMS at
19 cm/s
Less
than
0.04%
WRMS at 9.5
cm/s
Less
than
0.08%
DIN
45500
at 19
cm/s
Less
than 0.10%
DIN
45500
at 9.5 cm/s
30
to 27,000
Hz
13
dB at 19
cm/s using
WR
Tape
30 to
21,000 Hz
13
dB at 9.5
cm/s
using
WR Tape
30
to 25,000
Hz
t3
dB at 19
cm/s using
LN
Tape
30
to
19.000
Hz 13 dB
at 9.5
cm/s using
LN
Tape
Less
than 05%
aI 19
cmls
Better
than 62
dB DIN
45500
Better
than 70 dB
(at
1,000 Hz)
Better than
40
dB
(at
1,000
Hz)
Better
than 55 dB
(at
1,000
Hz)
100
kHz
(6):
Two GX
Recording
Heads,
Two
GX
Playback
Heads, Two
Erase
Heads
(3):
One
AC Servo Motor
for capstan
Drive
Two
AC Eddy
current
Motors
for Reel
Drive
Up
to 99
min 59 sec,
Less
than
r1.5%
120
sec
using 550m
(1,800
ft.) TaPe
Line
(2):
0.775V
(0
VU)
Required
load impedance:
more
than
20 kohms
Phone
(1):
100
mV/8 ohms
Microphone
(2):
0.25
mV
Required microphone
impedance:
600
ohms
LINE
(2):
70 mV
impedance
100
kohms
Input 2.0 mV,
impedance
l0 kohms,
O
t
0.3V
440(W)
x 483(H)
x 256(D)
mm,
(17.4
x 19'0
x 10.1")
2l
ke
(46.4
lbs)
100V.50/60
Hz for JPN
120V,60
Hz
for US
& Canada
2201240V,50
Hz for
Europe, UK
and
Australia
1 lO
|
120
|
220
I
24 0V,
5
0/60
Hz internally
switchable
for other
countries
1 tape unless
otherwise
noted.
to change
without
notice.
4

Akai GX-635D Specifications

General

Track system	4-track, 2-channel stereo
Total Harmonic Distortion	0.8%
Outputs	0.775V (line)
Type	Reel to Reel
Heads	3 heads
Motor	2 x reel, 1 x capstan
Reel size	up to 10.5 inch reel
Wow and flutter	0.06% (7 1⁄2 ips)
Frequency response	30Hz to 26kHz (7 1/2 ips)
Signal to Noise Ratio	62dB
Dimensions	440 x 440 x 240 mm (17.3 x 17.3 x 9.4 inches)
Output Voltage	0.775V
Tape speeds	3 3/4 ips, 7 1/2 ips