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Pioneer CT-4

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Technic details

Specifications

Type:
2-head, single compact cassette deck
Track system:
4-track, 2-channel stereo
Tape speed:
4.76 cm / s
Heads:
Recording / Playback combined - Hard permalloy head x 1
Erasure - Ferrite head x 1
Motors:
Electronics control DC-motor (Generator built-in) x1
Fast forward and rewind time:
85 sec. or less (C-60 cassette tape)

Tape Type:
Type I
CrO2
Metal
Noise Reduction:
Dolby B
Dolby C
Rotation unevenness (WRMS):
0.08% or less
[Frequency characteristic]
Type I tape: 30Hz to 14kHz / 40Hz to 13kHz, ±3dB
CrO2 tape: 30Hz to 16kHz / 40Hz to 15kHz, ±3dB
FeCr tape: 30Hz to 16kHz / 40Hz to 15kHz, ±3dB
[S/N ratio]
Type I tape: Dolby Off:
52dB or more
Dolby On:
62dB or more (5kHz or more)
At the time of a chromium tapes using:
The improvement in 4.5dB (5kHz or more)
Distortion:
1.7% or less
Input sensitivity / Maximum permissible input / Impedance:
Mic. - 0.23mV / 80mV / 23kΩ (The conformity mic. impedance 250Ω - 30kΩ)
Line - 64mV / 25V / 100kΩ
DIN - 10mV / 3.6V / 2.2kΩ
Output level / Maximum level / Impedance:
Line - 450mV / 800mV / 50kΩ
DIN - 450mV / 800mV / 50kΩ
Headphone - 60mV / 107 mV / 8Ω
Semiconductor used:
Transistors - 49 pieces (For motor electronics control x 3 pieces)
FET's - 4 pieces
Diodes - 38 pieces (For motor electronics control x 1 piece)
Zener diodes - 3 pieces
Light emitting diodes - 3 pieces
Included:
Stereo connecting cord x 2
Head cleaning-kit

Power source:
AC 100V, 50 / 60Hz
Power consumption:
15W
Dimensions (W x H x D):
380 x 150 x 316mm
Weight:
7.5kg
Year:
About 1976

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