||125,000yen (around the 1987 time)
116,000yeb (April 1, 1989 amendment)
The compact disk player which inherited the
technology of SL-P1200, such as a classAA audio circuitry, a vibration-proof
design, an edit function, and also introduced new know-hows, such as
strengthening of the heavy bass by an active servo power supply, and equipment
of a digital output termination.
The classAA scheme is adopted as a
total of each six L/R of three circuitries, a sample hold circuit, buffer
amplifier, and headphone amplifier.
The high-resolution is gained according
to powerful drive capacity and exact waveform-transmission capacity.
the sample hold circuit which removes the switching noise which a D/A converter
generatesIt becomes independent about the voltage control amplifier which
performs a waveform transmission, and the electric-current drive amplifier which
performs a load-intensity drive of the capacitor for a hold, a low pass filter,
etc., and the precision of the D-A conversion is raised by operating voltage
control amplifier by an unloaded condition.
a digital analog converter
-- Lch and Rch -- the dual converter scheme which arranged the converter for
exclusive use, respectively is adopted.
While this solves the problem of the
phase difference of L/R, the converter output was operated in electric-current
mode, the D-A conversion was accelerated, and the distortion and resolution in a
high region are improved.
In order for the noise generated by the
digital circuit system or the servo circuitry system to prevent mixing in an
audio audio circuitry through a power source, 2 transformer schemes equipped
with the transformer of respectively the special purpose of a digital system and
an audio system are used for a power transformer.
Furthermore, it separated
into three lines, Lcn, Rch, and headphone amplifier, and the secondary winding
of the transformer only for an audio system has also prevented the cross
interferencee in an audio circuitry.
Moreover, while using first recovery
diode and the electrolytic capacitor for mass audios for a rectifier circuit and
reducing a rectification noise, the powering stabilized also at the time of the
Dainyuu power is made possible.
In addition, the thing for which the audio
circuitry side also arranges the circuit board in the shielding structure in a
chassis,The interference from other circuitry systems and power transformers is
eliminated, and a lineout termination also uses the product line by the pin jack
of a shielding structure, and the high coaxial cable of the shielding effect, and is raising the purity of sound.
In order to correspond to the early
bass of a riser, the original low-noise active servo power supply is adopted as
the power source for audio circuitries.
While this forms a feedback circuit
combining constant-voltage IC excellent in the temperature stability only for a
power source, and wide band IC excellent in the RF property, reduces a
power-source noise by 20dB or more conventionally and raises an S/N ratio,The
outstanding regulation (voltage stability) which also endures a car battery has
In order to eliminate various oscillations which have an
ill effect on a tone quality, thorough absent resonance and unvibrated measures
First, the three-tiered weight base is adopted as a base portion
to the sound pressure oscillation transmitted from a speaker. This is what
carried out integral moulding of a metals chassis, special dumping rubber, and
the material in which the new materials TNRC (technics non Resonance compound)
differ, and has acquired the high braking effect by transforming vibrational
energy into heat energy.
Moreover, special deadning rubber is used also for
a cabinet top plate, and vibration proof is improved.
Next, in the floor
oscillation transmitted from a setting stand, the oscillation is held down with
the double insulator structure by the floating of four large-sized insulators
and optical decks.
Besides it, 2 power transformers which are the sources of
an oscillation inside a CD player also performed the rubber floating, and have
prevented transmitting an oscillation of a transformer outside.
to remove the noise component produced at the time of the D-A conversion of a
music signal, the super clean digital filter original with an audio circuitry is
The tone quality is improved with the combination of the 96th
digital filter and an analog low pass filter with a high operation precision.
Two digital output terminations, light and a coaxial, can be carried, and an audio signal can be direct transmitted to an external D/A-converter unit.
The Copper-foil styrene capacitor and the electrolytic capacitor for
audios are adopted as capacitors. Moreover, also with each part which
constitutes an audio circuitry, from double-sideds of a physical characteristic
and an audition testing, the study was repeated and the careful selection using
of adopting extensively the resistor for audios which uses OFC lead wire and a
non-magnetic-material cap etc. is carried out.
The use efficiency ratio
of laser light is high to the pickup which reads the signal of a disk, and 1
original beam scheme which has improved the SN ratio of a regenerative signal
sharply is adopted as it.
Furthermore, high play ability and endurance have
been acquired by using of the aluminum die-casting base, a glass lens strong
against a transition of a temperature or humidity, a phase difference scheme
tracking servo, etc.
By turning a dial by a fingertip, 2 speed search
dial which can do a head search minutely is carried in right reverse bothways.
The refresh rate per rotation can choose the 2 modes for about 1 second
(slow) and about 30 seconds (fast), and a precise access of a three-frame (1 /
25 seconds) unit of measure is possible for it at the minimum.
linear motor is adopted as the actuator of the traversal mechanism to which a
pickup is moved. With the original servo system which uses a microcomputer, the
pickup migration between music is shortened at about 0.9 second.
when deceleration mechanisms, such as a gear belt, are lost, silence and an
endurance are also improving.
The programmable music scan which plays
only the intro fraction of disk enrolment music one by one is carried.
play time per music can be set up freely till 1 to 99 seconds.
all operations carry the ten key wireless remote control which can be performed
by a hand from a play and the elementary operation of a pause to a search, a
repeat, and a time mode window.
Moreover, the digital attenuator
functionality whose volume can be controlled is also equipped by the level key.
The preset editing functionality in which compact-disk edit united at
tapes enrolment time is possible is carried.
||Compact disk player
||2.5V (0dB, EIAJ)
||96dB or more (EIAJ)
||108dB or more (EIAJ)
||0.0025% or less (1kHz, 0dB, EIAJ)
||0.0012% or less (1kHz, 0dB)
||108dB or more
|Wow and flutter
||Below a limit of measurement (EIAJ)
|Error correcting system
||Technics super decoding algorithm
||16-bit linear line
||High speed linear-access system
||A maximum of 15mW/32 ohms (variable)
||Width 430x height 127.5x depth of 382mm
|Adjunct: Wireless remote control
|The Battery used
||AA -- Battery 1.5Vx2
||Width 65x depth 155x18mm in thickness
||140g (Battery included)