The ultimate innovation in cassette technology - precise, fully automatic playback head azimuth adjustment. Optimum reproduction quality in both forward and reverse playback modes.
In a slightly different genere than the luxurious 1000ZXL, the Dragon is undoubtedly the finest cassette deck available. It represents the culmination of Nakamichi's vast technical resources and experience, retaining the basic uncompromising Nakamichi standards of performance through use of such innovations as an Asymmetrical, Dual-Capstan Double-Direct-Drive Transport, a Discrete Three-Head configuration, very high quality record/playback amplifier circuitry and, of particular interest to perfectionists, our unique NAAC (Nakamichi Auto Azimuth Correction) for the ultimate in playback performance from both sides on any tape.
Proper azimuth alignment is one of the most important factors in achieving the best possible cassette reproduction quality. For this reason, several Nakamichi cassette decks offer either automatic or manual adjustment of record head azimuth. Ideally, however, playback head azimuth should be adjustable so that even tapes recorded on other decks will be reproduced with the recorded frequency response and sound quality fully intact. Commercially available music tape, tapes borrowed from a friend, tapes in which the shell has warped slightly (a common occurrence) - all actually require some degree of playback head azimuth alignment to provide the best possible reproduction quality. Further, inaccuracies in cassette shell symmetry result in completely different azimuth alignment requirements in forward and reverse on auto-revers decks, often causing a significant variation in sound quality. All these points and problems LED Nakamichi to the development of the world's first fully automatic playback head azimuth alignment system NAAC, and its incorporation into this fine deck.
The Dragon's unique double direct drive system employs two Nakamichi quartz PLL servo Super Linear Torque DD motors (one for each capstan) so that wow and flutter are essentially eliminated while maintaining perfect transport stability in both forward and reverse directions. Auto reverse operation has been made available only in the playback mode so that the superb performance of the Discrete Three-head System is not compromised. Of course, full provision is made for left and right channel bias and record/playback level adjustment. All the Dragon's performance features also mean that the built-in Dolby C-type noise reduction system operates under ideal conditions for the best performance. Likewise, heads, mechanism and amplifiers are all the best available, as are features such as the microcomputer-controlled, real-time mechanism control system proven in other Nakamichi decks. Convenience features include Auto Rec Pause, where the deck automatically enters the pause mode during recording if a blank interval of 30 seconds or longer is detected in the source, switchable MPX and subsonic filters, easy cueing, and a dual-speed auto fader function, for customized recording with professional fade-in/fade-out results.
Specifications
System Configuration: 4-track, 2-channel stereo
Heads: 3; erase head x 1; record head x 1; 4-track, 4-channel playback head x 1
Motors Transport :
Two Quartz PLL DC brushless, slotless coreless Super Linear Torque DD Motor for Capstan drive
one DC Motor for reel drive
Auto Azimuth Correction : DC Motor
Mechanism : DC Motor
Tape Speed: 1-7/8 ips (4,8 cm/sec)
Wow and Flutter: less than 0,019% WTD RMS; less than ±0,04% WTD Peak
Frequency Response:
20 Hz - 22,000 Hz ±3 dB (recording level -20 dB , ZX tape)
20 Hz - 21,000 Hz ±3 dB (recording level -20 dB , SX, EX II tape)
Signal-to-Noise Ratio:
Dolby C-Type NR On [70 µs, ZX tape] : better than 72 dB (400 Hz, 3% T.H.D., IHF A-WTD RMS)
Dolby B-Type NR On [70 µs, ZX tape] : better than 66 dB (400 Hz, 3% T.H.D., IHF A-WTD RMS)
Total Harmonic Distortion : less than 0,8% (400 Hz , 0 dB, ZX tape)
Less than 1% (400 Hz, 0 dB, SX, EX II tape)
Erasure: better than 60 dB (100 Hz, 0 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 Sensitivity/Impedance : 50 mV/50 k Ω
Output Level/Impedance
Line : 1 V (400 Hz, 0 dB, output level control at max.)/ 2,2 k Ω
Headphone : 45 mW (400 Hz, 0 dB, output level control at max.)/ 8 Ω
Black Box Series DC Output: ±10 V, 125 mA max.
Power Requirements: 100,120, 220, 240 V AC 50/60 Hz
Power Consumption: 45 W max.
Dimensions (W x H x D): 450 x 135 x 300 mm (17-3/4" x 5-5/16" x 11-13/16"
Weight: 9,5 kg (21 lbs)
No comments:
Post a Comment