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Nakamichi DR-1

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Technic details

Specifications

Type:
Cassette deck
Heads:
Erase head x 1
Recording head x 1
Playback head x 1
[Motors]
Tape transport:
DC servo motor (For capstan drive) x 1
DC motor (For reel drive) x 1
Mechanism:
DC motor (For cam drive) x 1

Wow and flutter:
Less than ±0.06% WTD Peak
Less than 0.035% WTD RMS
Tape speed:
4.8 cm / s, ±0.5%
Tape type:
Type I
Type II
Type IV
Fast winding time:
Approx. 95 sec. (With C-60 cassette)
Frequency characteristics:
20Hz to 21kHz, ±3dB (Recording level -20dB, Type I / II / IV)
Noise reduction:
Dolby B
Dolby C
[S / N ratio]
Dolby C-type NR On (70μs, Type IV): 72dB or more (400Hz, 3% THD, IHF A-WTD RMS)
Dolby B-type NR On (70μs, Type IV): 66dB or more (400Hz, 3% THD, IHF A-WTD RMS)
Total distortion rate:
0.8% or less (400Hz, 0dB, Type IV)
1% or less (400Hz, 0dB, Type I / II)
Channel separation:
37dB or more (1kHz, 0dB)
Crosstalk:
60dB or more (1kHz, 0dB)
Erasure:
60dB or more (100Hz, +10dB)
Bias frequency:
105 kHz
Input terminal:
Line - 50mV / 40kΩ
Output terminal:
Line - 0.5V / 2.2kΩ (400Hz, 0dB, maximum output level volume)
Headphones - 5mW / 8Ω (400Hz, 0dB, maximum output level volume)

Power supply:
AC 100V, 50 / 60Hz
Power consumption:
25W (Max.)
Dimensions (W x H x D):
430 x 100 x 320mm (Not including protrusions)
Weight:
Approx. 5.4kg
Year:
1993

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