|89,800yen(around the 1987 time)
The compact disk player which carries a 16-bit
digital filter and a twin digital analog converter.
In order to
eliminate a digital noise from an analog circuit, the optical-transmission
scheme is adopted.
By this scheme, the signal from a digital circuit is
changed into light, and it is transmitting to the analog circuit,The separation
and the independency of a digital circuit and an analog circuit are realized
including a L/R serial data by using the optical transmission by a photocoupler
for five lines, such as an emphasis signal, a latch pulse signal, and a clock
The 16-bit digital filter is adopted as a digital filter, and
the burden of an analog filter is eased.
The twin digital analog
converter which equipped L/R independently is carried in the D-A-conversion
part, and the phase difference which was not avoided is banished by the single
Noise mixing to an analog system is
prevented by adopting as a power-source part the independent 2 power-source
scheme which separated the digital system and the analog system from the stage
of the power transformer completely.
Moreover, a shunt-regulator power
source is adopted as an analog circuit, and the stability is raised.
fine oscillation from an internal-rotation system is absorbed because a chassis
reduces a magnetic distortion by giving a copper plating and also adopts the
steel plate of 2.0mm thickness as a sole plate. Moreover, the sintered alloy
foot (50phi15mm) which was excellent in the vibration-proof dynamic behavior
with high rigidity is stuck to a floor surface, and a long oscillation and
extraneous vibration of a periodicity are supported.
The software of an
opposite phase can be reversed with an absolute phase circuit changing switch.
A magnetic distortion is eliminated by surrounding an analog part with a
The large-sized insulator is adopted as a mounting of a
The 70-micrometer thickness OFC Copper-foil printed
circuit board is adopted as the printed circuit board.
It can change
into a three-position supporting by changing the mounting location of a foot.
The power source only for headphone amplifier is carried.
index search / time search function is carried.
A 24 music random
program memory functionality and three kinds of repeat functions are carried.
Wireless remote control with a ten key is attached.
||Compact disk player
||GaAlAs double heterodyne semiconductor laser
||About 500-200rpm (CLV)
||1.2 m/s - 1.4 m/s (regularity)
|The number of channels
||16-bit linear line
||0.005% or less
||95dB or more
||100dB or more
||92dB or more (1kHz)
|Wow and flutter
||Below a limit-of-measurement value
(quartz-crystal oscillation precision)
||The width 430x height 101.5x depth of 335mm
||Wireless remote control AR-810