The more excellent tone quality and the compact disk
player which pursued the high robustness.
The interior is roughly
divided and is constituted by each part of a transport part, a power-source
part, a decoder part, the digital analog converter - the analog output part, and
the display-device control part. These circuit boards kept respectively
sufficient space character in order to eliminate the cross interferencee between
each element and each circuitry leading to a tone-quality failure, and since it
moreover adjoins, they give and arrange the angle of 90 degrees.
since these substrates serve as a plug-in synopsis, upgrade of a updation by
switching of a circuit board unit of measure is possible for them.
internal structure of PCD is the firm frame structure using aluminum drawing-out
material focusing on the transport mechanism. This is based on the same
principle as the technique used by building construction, and does not produce a
vibration to a low oscillation to a high oscillation of a frequency, but is
working effective in a vibration suppression.
Moreover, in order to prevent
a store recording of static electricity, the conductive coating and the 防錆
treatment are performed to the interior of the cabinet of PCD including frame
CDM1MKII of a Philips company is adopted as a transport
The Burr-Brown 18-bit monolithic type for highest-class
audios is carried as a digital analog converter. Furthermore, in order to
suppress a noise and a distorted occurrence to the minimum,
turning-on-electricity testing sufficient about each DAC is done, and the
detailed MSB coordination in the package status is performed in advance of shipment.
The high precision type of oversampling is adopted as a
digital filter 8 times.
The oversampling for avoiding a quatization noise
has risk of leading to a failure of the resolution by jitter distortion in too
much high order oversampling. So, in PCD, the point which can demonstrate the
benefit on a tone quality with a technology of those days to the maximum extent
was explored, and oversampling is chosen 8 times.
Each circuitries of
PCD including a digital-analog-converter circuitry consist of hybrid systems
using the element which kept being chosen in order to realize respectively most
desirable performance. Moreover, in order to demonstrate the performance of a
part to the maximum extent, in PCD, the turning-on-electricity scheme is always
The main power switch has secured the operation where each part
was stabilized by preparing in the back panel of a main unit and usually using
the standby power switch of the front panel.
The know-how in the
preamplifier design of Mark Levinson is supplied to the power-source part, and
the power circuit which is equal to a high precision measuring instrument is
carried. Moreover, in order to prevent beforehand the interference between the
circuitries which go via a power-source line, 13 powerings are carried out in
all and the regulation which became independent, respectively is performed to 12
of power sources of it. For example, in order that at least an audio-output
circuitry may perform a powering independently about each plus or minus of a
right-and-left channel, a total of four regulation circuitries are prepared.
Creativity original also with low-impedance-izing of a grounding
circuitry and a setups of the optimal grounding point is put.
output-terminal carries an imbalanced type and a balanced type, and, in one line
each and a digital output, analog output carries one coaxial type.
Wireless remote control is attached. With this remote control, all the
operations except ON/OFF of a power source and IN/OUT of a disk tray can be
||Compact disk player
||10Hz-20kHz+0 -0.2 dB
||0.004% (1kHz, 0dB)
||98dB or more
|Output load impedance
||1ohm or less
|An attached functionality
||Width 214x height 227x depth of 337mm
||Wireless remote control