Audio Database

The

Technics SL-P770 59,800yen (around the 1988 time)
55,500yen (April 1, 1989 amendment)

Description
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The compact disk player which adopted newly developed 4DACs and 18-bit conversion system.

4DACs and 18-bit conversion system are adopted as a D-A-conversion part.
In this circuitry, Lch, two Rch each, and a total of four D/A converters are adopted,While banishing zero cross distortion theoretically by carrying out the unity coupling of the digital analog converter for exclusive use by newly developed 4DAC processor LSI by the negative Masanobu number of both channel, and signal side, respectively, an 18-bit high-resolution operation is realized. Thereby, the reappearance capacity of a minute signal is raised sharply.
Moreover, the 266th 18-bit high-order-accuracy oversampling digital filter is adopted as the digital filter which removes an unnecessary RF component 4 times, and the high fidelity play is enabled by decomposing signal level into 18 bits from the conventional 16-bit.

classAA which is a high-quality sound circuitry technology original with a lineout circuitry and a headphone circuitry is adopted. This has realized the faithful waveform transmission also to a complicated connected load, and the super-low distortion and the high-resolution are realized.

The high speed linear-access system which used the linear motor is adopted as the actuator of the traversal mechanism to which a pickup is moved. The rapid access is realized by applying a polish to the original control system which made full use of a microcomputer, and a high endurance and silence are realized at the same time it raises an operationality.
Moreover, the pickup has acquired the signal read capacity to really have excelled by adoption of the molding glass lens, and a high robustness.

By adopting the multilayer structure base which consists of a heterogeneous metals, and a multilayer structure top plate, the reduction of the oscillation which has an ill effect on a tone quality is aimed at.
Moreover, to the floor oscillation directly transmitted from a setting stand, the reduction is aimed at by adopting the multiplex insulator stream composition by the double floating of four large-sized insulators and optical decks.

Two digital outputs, light and a coaxial, are carried.
Moreover, the digital output ON/OFF switchpoint which can intercept the influence of a digital output at the time of an analog play is carried.

The independent 2 coil power transformer with which the audio system and the digital-servo system became independent is adopted as a power circuit, and it has prevented the influence of the intense digital circuit of a variation or a servo circuitry attaining to an audio system.
Moreover, the powering stabilized by adoption of the low-noise active servo power supply is realized.

The edit guide functionality is carried, and only by choosing the enrolment time (90 minutes/60 minutes/46 minutes) to a tapes, the number of music, the sequence of music, and sound-recording time which can be recorded on a tapes A side / B side are calculated automatically, and it can display on a display device.

After carrying the digital peek search and carrying out the autmatic detection of the peak level of disk all songs or special-NetWare-program music, a part and a total of 6 seconds are repeated for peak-point order }3 seconds, and it can perform. The optimal recording level by the side of the deck can be easily set up by using this functionality.

Wireless remote control is attached.

Attached
Optical Independent
- SL-P770 optical deck part - The independent 2 coil power transformer of SL-P770

Rating of a mode
Form Multi-compact disk player
<Audio part>
The number of channels Two-channel stereo
Output voltage 2.5Vrms(EIAJ)
Frequency characteristic 2Hz-20kHz}0.3dB (EIAJ)
Dynamic range 100dB or more (EIAJ)
SN ratio 112dB or more
THD 0.003% or less (1kHz, EIAJ)
THD 0.0015% or less (1kHz, 0dB, harmonic content up to the 10th order)
Channel separation 110dB or more (EIAJ)
Wow and flutter Below a limit of measurement
Low pass filter 266th 4fs digital filter
<Signal format>
Sampling frequency 44.1kHz
Error correcting system Technics super decoding algorithm
Composite-izing 16-bit linear line
<Pickup>
Scheme FF-1
Light source Semiconductor laser
Wavelength 780nm
<Traverse>
Scheme High speed linear-access system
<Synthesis>
Headphone-output level A maximum of 60mW/32 ohms (variable)
Power source AC100V, 50Hz/60Hz
Power consumption 16W
Dimensions Width 430x height 116x depth of 333mm
Weight 6.5kg
Adjunct: Wireless remote control EUR64711
Functionality 41 keys
The Battery used AA -- Battery 1.5Vx2