Nakamichi CR 4
Track Configuration: 4 tracks 2 channel stereo
Heads
Erase head x1
Record head x1
Playback head x1
Motors “Tape Transport”
CR-4: FG servo brushless, slotless, coreless DD motor (capstan drive) x1
DC motor (reel drive) x1
Wow-and-Flutter
Less than ±0.048%
Less than 0.027% WTD RMS
CR-4: 20 Hz-21,000 Hz ±3 dB
Signal-to-Noise Ratio
Dolby C-Type NR on <70 μs, ZX [Type IV tape]
Better than 72 dB (400 Hz, 3% THD, IHF A-WTD RMS)
Dolby B-Type NR on <70 μs, ZX [Type IV tape]
Better than 66 dB (400 Hz, 3% THD, IHF A-WTD RMS)
Total Harmonic Distortion
CR-4: Less than 0.8% (400 Hz, 0 dB, ZX [Type IV] tape)
Less than 1.0% (400 Hz, 0 dB, SX [Type II], EX II [Type I] tape)
Erasure: Better than 60 dB (100 Hz, +10 dB)
Separation: Better than 37 dB (1 kHz, 0 dB)
Crosstalk: Better than 60 dB (1 kHz, 0 dB)
Bias Frequency: 105 kHz
Input (Line): 50 mV/30k ohms
Output (Line): 0.5 V (400 Hz, 0 dB, output level control at max.); 2.2k ohms
Headphones: 5 mW into 8 ohms (400 Hz, 0 dB, output level control at max.)
Fast-Wind Time: Approx. 80 seconds (with C-60 cassette)
Power Source: 220 V 50/60 Hz
Power Consumption: CR4: 38 W max
Tape Speed: 4.8 cm/sec. ±0.5%
Dimensions: 430x100x265 mm
Weight: CR-4: 5.9 kg