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| Pioneer PD-8030 |
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| 89,800yen(1986 release) |
The compact disk player which put absent-resonance
thought into practice, and also adopted the copper plating chassis.
A
magnetic distortion is reduced by carrying out the copper plating of the whole
chassis.
Furthermore, compared with the case where only a single metals is
used, the amount of periodic damping is large because it will be in a different
pasting status of metalses.
The digital filter is adopted as an audio
circuitry.
The digital signal sampled with the sampling frequency of 44.1kHz
will be seemingly attracted and raised to 88.2kHz, twice, and the unnecessary
signal near 44.1kHz will be removed,Since the necessity of using the low pass
filter which has a steep property by this is lost, the audio property of the low
distortion with few circumferences of a phase has been acquired until it reaches
the high region which is 20kHz.
In order to press down an unnecessary
oscillation of a disk and to obtain exact signal reading, the enhancement was
added to the conventional disk stabilizer and the good special resin of a
periodic-damping property is adopted.
The pickup which carried out
proprietary is adopted as a pickup.
By adoption of the aspheric surface
objective lens and the compounded type lens, the propagation loss of a laser
power is reduced and the exothermic of laser diode is suppressed.
Furthermore, the linear servo system was adopted, the basic property of a
pickup has been improved further, an unnecessary vibration and crosstalk of the
actuator fraction were eliminated, and skipping is prevented by a suitable servo
property and gain control.
The scheme which processes synchronously the
digital signal processing processed by two or more LSI with one master clock is
adopted.
By being processed by the high order accuracy by this, it prevents
includeding a Jitter component in a digital signal, or generating a beat between
each signal, and the ill effect to a servo circuitry or an audio circuitry is
pressed down.
more -- high -- in order to investigate a purity transmit,
the pure transmission system is adopted.
In the digital part, the
unnecessary oscillation of the disk by a disk stabilizer was reduced, and the
ill effect to the digital signal by an exogenous noise is eliminated.
Moreover, in the audio part, a low-noise low-power-output impedance
regulator is stationed to the audio circuitry nearness on a substrate, and the
elevation of an impedance is suppressed and supplied to each block circuitry.
Furthermore, a using of IC of L and R common is eliminated and it is
considered as the straight pattern of the L.R symmetry.
In order to
intercept the oscillation from the outside, the thing made from a fine ceramics
is adopted as an insulator.
Moreover, the oscillation was disliked, and the
fraction of optical system carried out the floating only of the mechanism
fraction in an equipment, and has equipped the audio insulation which shuts out
an extraneous vibration.
A Copper-foil styrene capacitor is adopted as
the capacitor of a small capacity, and the oxygen-free-high-conductivity-copper
(OFC) line is adopted as the product-line material and plug code of a signal
system.
Moreover, the distorted occurrence is thoroughly adopted brass cap
carbon and suppressed in the lead-wire drawer part of the carbon resistor.
The auto special-NetWare-program edit functionality which calculates and
programs how many music can be recorded automatically within the limits of the
length of the tapes to be used is carried.
It can carry out from the music
or below specified only from the music of the beginning of a disk.
It is
possible to pay and display the total performance time of the programmed music.
The convenient pause program function is carried to stop between the
music of a special-NetWare-program play.
If compact disk is put into the
tray, an autostart will be carried out at the time of the power source ON.
A special-NetWare-program play is possible to 24 music in favorite
music.
The headphone jack with a volume is carried.
|
| Form |
Compact disk player |
| Pickup |
3 beam semiconductor laser scheme
|
| DA conversion |
16-bit linear line |
| Frequency characteristic |
4Hz - 20kHz, ±0.3dB |
| SN ratio (EIAJ) |
100dB or more |
| Dynamic range (EIAJ) |
96dB or more |
| Channel separation (EIAJ) |
94dB or more |
| Wow and flutter (EIAJ) |
Below a limit of measurement (±0.001%W.Peak)
|
| THD (EIAJ) |
0.003% or less |
| Output voltage (EIAJ) |
2V±0.5V |
| The number of channels |
Two channels (stereo) |
| Power source |
AC100V, 50Hz/60Hz |
| Power consumption |
12W |
| Dimensions |
Width 457x height 94x depth of 310mm
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| Weight |
5.8kg |
| Adjunct |
Remote control CU-PD004
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