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HITACHI D-900

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Technic details

Specifications

Type:
Stereo Cassette Tape Deck
Track System:
4 track, 2 channel stereo
Tape Type:
C-30, C-60, C-90 cassette tape
Tape Speed:
4.75 cm / s
Recording System and Bias Frequency:
AC bias, 105kHz

Erasing System:
AC erase
Heads:
1 x Combination record / Playback head
1 x Erase head
Motors:
DC servo motor
Tape Type:
Normal
CrO2
FeCr
Noise Reduction:
Dolby B
Frequency Response:
20Hz to 17kHz / 30Hz to 15kHz, ±3dB (Normal tape)
20Hz to 20kHz / 30Hz to 15kHz, ±3dB (FeCr tape)
20Hz to 18kHz / 30Hz to 18kHz, ±3dB (Cr02 tape)
S / N ratio:
55dB (Dolby B Off)
63dB (Dolby B On)
Wow and Flutter:
0.05% (WRMS)
Total Harmonic Distortion:
1.5%
Input Sensitivity / Impedance:
0.3mV / 300Ω to 5kΩ (MIC)
60mV / 100kΩ or more (Line)
Output:
0.5V (Line)
Semiconductors used:
IC's x 19
Transistors x 57
Diodes x 62
Zener diodes x 3
Power Supply:
AC 120V, 60Hz
Power Consumption:
27W

Dimensions (W x H x D):
435 x 182 x 254mm
Weight:
8.5kg
Year:
1978

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