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TECHNICS RS-678U

Technic details

Specifications

Type:
Stereo cassette deck
Track System:
4-track, 2-channel stereo recording and playback
Tape Speed:
4.8 cm/s
Head configuration:
Recording / Playback combination head x 1 (HPF)
Erase head x 1 (Double gap ferrite)
Motor used:
For Capstan drive x 1 (FG servo DC motor)
For Reel table drive x 1 (DC motor)
Tape Type:
Normal, CrO2

Fast forward and rewind time:
Approx. 90 sec. (With C-60 cassette tape)
Noise Reduction:
Dolby B
[Frequency characteristics]
Normal tape:
20Hz to 16kHz
25Hz to 14kHz (DIN)
30Hz to 13kHz, ±3dB
CrO2 tape:
20Hz to 18kHz
25Hz to 15kHz (DIN)
30Hz to 14kHz, ±3dB
S / N ratio:
Dolby Off: 52dB
Dolby On: 10dB improvement over 5kHz
Wow and flutter:
0.06% (WRMS)
±0.15% (DIN)
Input sensitivity / Impedance:
Mic - 0.3mV (-70dB) / 600Ω to 20kΩ
Line- 60mV (-24dB)
DIN - 16mV / 2.2kΩ
Output level / Impedance:
Line - 420mV (-7.5dB) / 10kΩ or more
DIN - 420mV / 2.5kΩ
Headphone - 65mV / 8Ω
Semiconductor used:
Transistors x 49 pieces
FET's x 2 pieces
Diodes x 33 pieces
Other semiconductors x 4 pieces
Features:
3-Digıt Mechanical Counter
Analog Needle Meters
Manual Tape Equalization
Chrome Tape Capabılity
Normal Tape Capabılity
Manual Tape Type Selection
19" EIA Rack Mounting
Front Loading
Output-Level Control
Memory Stop
Soft Touch Transport Control
Timer Recording/Playback

Power supply:
AC 100V, 50 / 60Hz
Power consumption:
About 20W
External dimensions (W x H x D):
450 x 173 x 341mm
Weight:
10kg
Year:
Around 1976

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