Akai X-165D Service Manual

l. SPECIFICATIONS
RECORDIING SYSTEM
Cross-Field Head recording system.
PLAYBACK SYSTEM : In-Line 4 track stereo/monaural play-
back system.
TAPE SPEED 1-7/8, 3-3/4, 7-1/2 ips (15 ips op-
tional)
TAPE SPEED DEVIATION
Within + 1.5% at all tape speeds.
WOW AND FLUTTER : Less than 0.15% r.m.s at 7-1/2 ips.
(Playback only) Less than 0.20% r.m.s at 3-3/4 ips.
Less than 0.30% r.m.s at 1-7/8 ips.
FREQUENCY RESPONSE
30 to 22,000 Hz at 7-1/2 ips. (+3 dB)
30 to 18,000 Hz at 3-3/4 ips.
30 to 9,000 Hz at 1-7/8 ips.
SIGNAL TO NOISE RATIO
: Better than 46 dB
DISTORTION With in 3% at 1,000 Hz OVU recording.
CROSS TALK Less than —65dB (Monaural)
Less than —43 dB (Stereo)
ERASE RATIO Less than —70 dB for all tracks
EQUALIZATION Correct equalization for playback of
tapes recorded to the NAB curve.
RECORDING BIAS FREQUENCY
: 60kHz +5 kHz
1.228 V (+4dB) at using 250 Hz
OVU recorded tape.
Required Load Impedance...
More than 25 k-Ohms
OUTPUT (LINE)
DIN OUTPUT 0.4 V (—6 dB) using a 250 Hz OVU
recorded tape. Impedance 10 k-Ohms.
Required Load Impedance...
More than 50 k-Ohms
INPUT LEVEL Line...20mV (—32dB) to 2.5 V
(10 dB)
Impedance .. . 390 k-Ohms
Mic 0.5mV (—64dB) to 50mV
(—25 dB)
Impedance... 50 k-Ohms
High ...more than 20 mV (—32 dB)
Impedance .. . 390 k-Ohms
Low ...more than 5 mV (—44 dB)
| Impedance .. . 68 k-Ohms
F.FORWARD AND REWIND TIME
90 seconds using a 1,200 ft. tape at
50 Hz, 75 seconds at 60 Hz
HEAD PHONE OUTPUT
30 ~40 mV
Impedance 8 Q
100 to 240 V AC, 50/60 Hz
DIN INPUT LEVEL
POWER SUPPLY
POWER CONSUMPTION
S55 VA
INSULATION RESISTANCE
More than 50 M-Ohms
In-Line 4 track stereo/manaural
MOTOR
Hysteresis
synchronous
2
speed
motor.
Horse
Power...
1/100
HP
Power
Ratio...
85%
Revolution
...
3,000
and
1,500
r.p.m.
at
50Hz.
3,600
and
1,800
r.p.m.
at
60
Hz
Condenser
capacity
...
2.8
uF
at
50
Hz
2.0
uF
at
60
Hz
HEADS
Recording/playback
head
4 Track Gap 2 microns
Impedance ... 1.2 k-Ohms at 1,000 Hz
Bias head
4 Track ... Gap 0.2 mm
Impedance ... 500 Ohms at 60 kHz
ERASE head
4 Track ... Gap 0.2 mm
Impedance ... 500 Ohms
RECORD LEVEL INDICATOR
: Vertical indication Model ‘‘A”’
VU meter x 2
TRANSISTORS USED : 2SC650 (A) x 4
2SC281 (B) x 4
2SC458 (B) x 2
28C971 (2)(3) x 2
DIODES USED IN34A x 2
SW-05-02 x 2
STYLE Portable
DIMENSIONS 13-1/2" (H) x 13-1/2” (W) x 9" (D)
(340 H x 340 W x 230 D mm)
WEIGHT 30.8 lbs (14 kg)

Akai X-165D Specifications

General

Brand	Akai
Model	X-165D
Category	Tape Deck
Language	English