Teac W-470 - 1. Specifications and Service Data; Specifications Overview; Service Data and Specifications

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W-470
1.
SPECIFICATIONS
AND
SERVICE
DATA
SPECIFICATIONS
Track System 4-track, 2-channel stereo
Heads Play I: Playback #1
REC/PLAY I: Erase *1, Record/Playback *1
Type of Tape Cassette tape, C-60 and C-90 (philips type)
Tape Speed 4.76 cm/s(1-7/8 ips), 9.5cm/s (3-3/4ips) 3
(Hi speed Dubbing)
Input. (level and impedance)
LINE IN: Specified input level: -9dB (275 mV)/50 kohms
Min. input level: ~19dB (86. 9nV)
Output (level and load impedance)
OUTPUT: Spec. output level: -3dB (548mV)
PHONES: Spec. output level: -19dB (86.9nV)/8 ohms
Equal ization
METAL:- 3180uS+ 70uS
Cr02: 3180 uS+ ‘70uS
NORMAL: 3180 4S+ 120 uS
Head Configuration
1/2-track, 1-channel erase head
1/4-track, 2-channel record/playback head
Motor PLAYI: 1 DC servo motor,
REC/PLAY I: 1 DC servo motor
Bias Frequency 100kHz
Operation Position Horizontal
Power Requirements
120/220/240 V AC,50/60Hz (General Export Models)
120 V AC,60Hz (U.S. A/Canada)
220 V AC,50Hz (Europe)
240 V-AC,50Hz (U.K./Australia)
100 V AC,50Hz (JAPAN)
Power Consumption 12
Weight 4,7kg (10.36 lbs)
Dimensions (WHD)
435%1274262mm
(17-1/8"5"810-5/16")
NOTES:
Improvements may result in SPECIFICATIONS AND SERVI
DATA chanfes.
Value of "dB" in the data refers to 0 dB (©.775 V),
expect where Specified.
SERVICE DATA
MECHAN ICAL
Tape Speed Deviation 3,000 Hz +90,-90 Hz,6000 Hz+180,
-180 Hz
Tape Speed Drift 45 Hz (LOW SPEED),90Hz (HIGH SPEED)
Yow. and Flutter
Playback: 0.30 96 (WRMS)
Pinch Roller Pressure 250 g to 470 g (8.80z to 16.5 oz)
Reel Torque
Take-up: 35 to 70 g-cm (0.49 to 0.97 02-inch)
Supply: 2.5 to 6 e-cm (0.035 to 0.083 0Z-inch)
F.F: 70 to 160 g-cm (0.97 to 2.22 0Z-inch)
REW: 70 to 160 g-cm (0.97 to 2.22 0Z-inch)
Fast Wind Time
125 sec or less for MIT-5511 (C-60)
Auto End-stop Time 5 sec. or less
ELECTRICAL
Frequency Response
See Figs. 5-7 & 5-9
Signal-to-noise Ratio
Playback: NORMAL: 46 dB min.
Record/P layback
METAL, Cr02: 45 dB min.
NORMAL: 44 dB min.
Erase Efficiency
65 dB min. at 1 kHz (measured with input 10 dB higher
than the specified input level).
Channel Separation 30 dB min. at 1 kHz
Adjacent Track Crosstalk 40 dB min. at 125 Hz
Total Harmonic Distortion 2.0 % or less with NORMAL
2.5 % or less with Cr02,METAL