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| Pioneer PD-9010X |
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| 149,800yen(around the 1986 time) |
The compact disk player which supplied advanced
technology and materialized pure transmission thought.
The disk
stabilizer is adopted in order to suppress an unnecessary oscillation of a disk.
A pickup adopts an aspheric surface objective lens and a compounded type
lens, and is reducing the propagation loss of a laser power.
Moreover, it is exact, and in order to obtain the Focus and trances performance
of a high sensitivity, the focal para-drive organization and the cross
parallel suspension scheme are adopted as an actuator.
By holding these optical mechanisms on
the precision die-casting body, it is made strong to disturbance.
In
order to prevent skipping by the crack and dirt of a disk, the linear servo
system is adopted.
It has controlled in the suitable amount of servoes so
that a lead beam detects the different crack and dirt from a pit sequence in
this side taking advantage of the strength of 3 beam tracking scheme, and a
pickup follows a crack etc. and does not cause a track jump.
The scheme
which processes synchronously the digital signal processing processed by two or
more LSI with one master clock is adopted.
It prevents includeding a Jitter
component in a digital signal, or generating a beat between each signal by this,
and the influence on a servo circuitry or an audio circuitry is suppressed few.
In the audio circuitry, the digital filter was adopted, and since it
becomes unnecessary to use a low pass filter with a steep property, the property
of few low distortions of the circumference of a phase has been acquired until
it reaches the high region which is 20kHz.
In order to realize a
transmit of a high purity, the pure transmission system is adopted.
While
separating a digital circuit and an analog circuit clearly, 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
produce sound with sense of stability, the insulator with a high rate of
periodic damping is adopted by the high rigidity.
Moreover, the
optical-system mechanism who dislikes an oscillation was made into the floating
structure, and the audio insulation which decreases an extraneous vibration is
adopted.
The power source of a servo, a digital system, and an audio
system is used as the twin power transformer completely separated from the
transformer itself.
This is reducing the ill effect to the audio circuitry by the servo circuitry
or a digital circuit.
Furthermore, the high
purity OFC coil was allotted to Orient core material at the power transformer
for audio circuitries, and the OFC wire rod is adopted also as a drawer.
high -- what also selected the part carefully for the purity transmit is
adopted.
A glasscase electrolytic capacitor, an OFC power cord, first
recovery diode,The Copper-foil styrene capacitor, the FOC connecting cord
(gilding plug), the brass cap carbon resistor, etc. are used, and also OFC lead
wire and an OFC busbar are adopted as an audio circuitry.
All resistors used
especially for an audio circuitry have eliminated all the semipermanent volumes
for a coordination with combination with the operational amplifier which used
the thing of less than 1% of tolerance, and was selected carefully.
Functionalities, such as a pause program function, a special-NetWare-program
settlement-of-accounts time window, a track display device, a ten key program
function, all songs / special NetWare program / 1 music repeat, an index
search, and three steps of velocity manual searches, are carried.
The headphone jack with a volume is adopted.
The sub-code
output-terminal is carried.
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.JPG)
| Form |
Compact disk player |
| Pickup |
3 beam semiconductor laser scheme
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| DA conversion |
16-bit linear line |
| Frequency characteristic |
2Hz - 20kHz, ±0.3dB |
| SN ratio |
98dB |
| Dynamic range |
96dB |
| Channel separation (1kHz) |
95dB |
| Wow and flutter |
Quartz-resonator precision |
| THD |
0.001% (1kHz, 0dB) |
| THD + noise |
0.0022% (1kHz, 0dB) |
| Output voltage |
2Vrms(0dB) |
| The number of channels |
Two channels (stereo) |
| Power source |
AC100V, 50Hz/60Hz |
| Power consumption |
15W |
| Dimensions |
Width 457x height 95x depth of 310mm
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| Weight |
6.6kg |
| Adjunct |
Remote control |
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