|79,800yen (around the 1987 time)
The compact disk player which enriched the functionality inheriting the technology of SL-P1200 and carrying technologies, such as classAA.
The classAA audio circuitry is adopted as a sample
hold circuit and buffer amplifier.
In a sample hold circuit, it is
transmitting to the subsequent stage, without opening voltage control amplifier
wide and spoiling the amount of information of compact disk from capacitive
heavy-load drive of charging the sampling signal of D/A to the capacitor for a
Moreover, also in buffer amplifier, it was concerned with complicated
load intensities put together, such as an input impedance of the preamplifier
connected, and a capacitive load of a connecting cable, and there is nothing and
the stable waveform transmission is realized.
Furthermore, classAA was
adopted also as the I/V converter of a digital-analog-converter output, and the
high-speed and highly precise L/R translation and the I/V translation are
The super clean digital filter which combined the 96th newly
developed digital filter and the 5th analog low pass filter with the audio
circuitry unit is adopted.
An unnecessary noise component is removed and a
phase response, a distorted property, the frequency characteristic, etc. are
Also about the part which constitutes an audio circuitry, the
study was repeated from double-sideds of a physical characteristic and an
audition testing, and the high-definition tone quality has been obtained.
The Copper-foil styrene capacitor and the electrolytic capacitor for audios
of fine-ceramics content are used in plenty for capacitors.
tone-quality checking is severely performed even into the material of the
printed wiring on a ceramic board also with the low pass filter.
order to prevent noise mixing to an audio circuitry from a digital circuit
system or a servo circuitry system, the power source of an audio circuitry
system was constituted independently of the digital circuit system / servo
circuitry system, and the interference between circuitries is prevented.
The FF-1 laser pickup by 1 original beam scheme is adopted as the pickup
part which reads the signal of a disk.
Compared with 3 conventional beam
schemes, the use efficiency ratio of laser light is high, and the SN ratio of a
regenerative signal is improved.
Furthermore, the signal reading capacity
for adoption and the interval of a digital Accu servo system, a
change-control-form lens system, etc. to be strong also against the crack and
finger print of a disk and to have excelled has been acquired.
to suppress the oscillation which has an ill effect on the tone quality of a
compact disk player, thorough oscillating measures are taken.
two-layer compound weight base of a metal chassis and TNRC is adopted to the
sound pressure oscillation from a speaker. It demonstrates the high vibration
suppression effect while this was developed as a result of repeating a study
repeatedly until it reached the location of through, a material, form, and a
bolt in the vibration analysis by laser holography, and it obtains sufficient
weight and an intensity.
Furthermore, in the cabinet upper portion,
vibration proof is strengthened using the special vibration proof material
determined by the computer simulation.
Moreover, to the floor oscillation
which gets across to a setting stand, the oscillation which are four large-sized
insulators first and gets across to the main unit of a player was intercepted,
it was considered as the double insulator structure which carries out the
floating of the optical deck from a main unit the whole loading mechanism on it, and the floor oscillation is shut out.
Besides it, the power transformer is
also considering carrying out a floating with special dumping rubber etc. as
thorough no vibrating and absent-resonance design.
2 speed search dial
in which a detailed head search is possible is carried in right reverse
The refresh rate per rotation serves as 2 mode system for
change-over for about 1 second (slow) and about 30 seconds (fast).
turns on the slow side, a precise access of a three-frame (1 / 25 seconds) unit
of measure is also possible at the minimum.
The traverse delivery
organization by the linear motor by microcomputer control was adopted, and the
high-speed head search for an average of 0.9 second is realized.
silence and an endurance are also improving.
The programmable music scan
functionality to perform only the intro fraction of music one by one is carried.
Performance time can be set up freely till 1 to 99 seconds.
operation by a hand is possible with attached ten key remote control.
Moreover, the digital attenuator functionality where a
conditioningregulation can do a sound volume per 2dB from 0dB to -12dB is
||Compact disk player
||2.0V (0dB, EIAJ)
||96dB or more (EIAJ)
||101dB or more (EIAJ)
||0.003% or less (1kHz, 0dB, EIAJ)
||0.0015% or less (1kHz, 0dB)
||105dB 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 97.5x depth of 260mm
|Adjunct: Wireless remote control
|The Battery used
||AA -- Battery 1.5Vx2
||Width 65x depth 155x18mm in thickness
||140g (Battery included)