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| NEC CD-816 |
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| 69,800yen(around the 1989 time) |
The compact disk player which supplied the
technology acquired by compact-disk-830DS and was developed.
It is
carrying 16fs T.F.C. (Transversal Filtering Circuit) and carrying out the
upshift of the sampling frequency to 705.6kHz, 16 times, by a high precision
digital operation,The digital noise was shifted to the super-high region, and
the smooth wave has been obtained.
Thereby, the latter analog filter became a passive type of the simple sub- compared with the former, and has realized the
extensive modification of an expansion of a passband, element distortion, and
phase distortion.
The 4DAC B.S.S. (Balanced Summing System) balance
type-conversion circuitry is adopted as a D-A-conversion part.
This consists
of balance type-conversion circuitries in which each two Lch-Rch uses the
digital analog converter specially chosen in the precision at the time of small
level out of DAC chosen by the merit of the linearity. The dynamic range on
Hearing impression is expanded by this, and an exact representation and the
silent clear feeling of a pianissimo are raised.
Moreover, simple-ization of
the signal path of an analog part, such as making a coupling capacitor
unnecessary, is realized by carrying out the balance operation of the method DAC
of an unipolar.
Adopted the large-sized transformer and the OFC power
cord as the power circuit, and the outstanding regulation was obtained, and also
the digital system and the analog system were separated and noise mixing is
prevented with constituting a filter by a good capacitor.
The base with picking of the mechanism of a chassis consists of materials
which were excellent in rigid high & vibration-proof property. Moreover,
the sole plate of the dual structure which added the 1.6-mm-thick griddle
to the sole plate with a usual thickness of 1mm is adopted, and the oscillation
from the interior and the visitor oscillation are reduced.
Moreover, the sintered alloy foot
(phi63.5mm) is adopted as an insulator, and an interview place and a
three-position shorted to ground are possible.
Furthermore, the key point
has a structure dumped by special vibration proof material.
It is
possible to carry the absolute phase (signal polarity), to be able to switch a
selection and to unite the signal polarity of compact disk with the polarity of
a systemwide.
The digital output (a coaxial/light) is carried.
Performance time edit functions, such as a digital fadeout functionality,
an auto edit function and a manual edit function, an auto space functionality,
and a music window within residual time, are carried. Otherwise, it is
a deletion special-NetWare-program play, random play, and intro scan,Functionalities,
such as 24 music random program memory, 3 mode repeat of all songs / special
NetWare program / A-B, a time search, a track search, an index search,
2 speed music search, and a power-on start, are carried.
The large-sized-with
music calender display device in which a luminosity is changed to three steps is
carried.
The headphone jack with a volume is carried.
Wireless
remote control is attached.
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| Form |
Compact disk player |
| Frequency characteristic |
5Hz-20kHz±0.5dB |
| THD |
0.0018% or less |
| Dynamic range |
98dB or more |
| S/N ratio |
105dB or more |
| Channel separation |
103dB or more (1kHz) |
| Wow and flutter |
Below a limit-of-measurement value
(quartz-crystal oscillation precision) |
| Output voltage |
Analog: 2.5Vrms
Digital: 0.5 Vp-p/75ohms
(Coaxial) |
| Power source |
AC100V, 50Hz/60Hz |
| Power consumption |
19W |
| Dimensions |
Width 430x height 110x depth of 290mm
Width 430x height 129x depth of 306mm (maxima) |
| Weight |
8.5kg |
| Adjunct |
Wireless remote control AR-816 |
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