Audio Database

The

Technics SL-P550 49,800yen (around the 1988 time)
46,200yen (April 1, 1989 amendment)

Description
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The compact disk player which adopted 2DAC and 18-bit conversion system.

Newly developed 2DAC and 18-bit conversion system are adopted as a D-A-conversion part.
In this circuitry, the digital analog converter is carried in each Lch/Rch, and an 18-bit high resolution has been obtained by controlling the data sent to each digital analog converter by 18-bit processor LSI. The reappearance capacity of a minute signal is conjointly improved sharply with the high resolution by an 18-bit 4 time oversampling digital filter.

The classAA scheme original with the output buffer amplifier of an audio circuitry is adopted, and the stable waveform transmission which does not receive the ill effect of a connected load is realized.
Moreover, digital one / analog separation power circuit is adopted as a power circuit, and the ill effect to the analog circuit is protected from the digital circuit.

In order to stop the ill effect by the oscillation from the outside, the BMC mechanism base which has the thermal resistance of 200 degrees C and the outstanding periodic-damping property in an optical deck part is adopted. The high vibration proof effect is acquired by carrying out the floating of this deck.
In moreover, the actuator of the traversal mechanism to which a pickup is movedThe high speed linear-access system by a linear motor is adopted, and while the original control system which made full use of a microcomputer realizes a rapid access, a high endurance and silence are acquired.

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

After carrying the auto peek search and carrying out the autmatic detection of the peak level of disk all songs or special-NetWare-program music, peak-point order }3 seconds can be repeated and performed. The optimal recording level by the side of the deck can be easily set up by utilizing this functionality.

The large-sized function-logic-diagram multi-display which can display a music matrix display device, 4 mode time, etc. is carried.

The coaxial digital output termination is carried.

Functionalities which reproduce only the intro fractions of a repeat / A-B repeat, a random play, and music for 15 seconds at a time, such as a music scan, 2 speed manual search, a skip, and an index search, are carried.

If the power-on timer is carried and the disk is contained at the time of the power source ON, a play will be started automatically.

The headphone jack which carries a variable volume is carried.

27 key full remote control is attached.

Optical Wireless
- SL-550 optical deck part

Rating of a mode
Form Compact disk player
<Audio part>
The number of channels Two-channel stereo
Output voltage 2.0Vrms (0dB, EIAJ)
Frequency characteristic 2Hz-20kHz}0.3dB
Dynamic range 98dB or more (EIAJ)
SN ratio 105dB or more
THD 0.004% or less (EIAJ)
THD 0.002% or less (1kHz, 0dB, harmonic content up to the 10th order)
Channel separation 96dB or more
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 15mW/32 ohms (variable)
Power source AC100V, 50Hz/60Hz
Power consumption 12W
Dimensions Width 430x height 102x depth of 330mm
Weight 3.1kg
Adjunct: Wireless remote control
Functionality 27 keys
The Battery used AA -- Battery 1.5Vx2