Audio Database


NEC CD-803
215,000yen(around the 1982 time)

The compact disk player of No. 1 which NEC announced.

In order to realize a compact disk player, five control circuits, a pickup control circuit, a laser control circuit, a disk motor-control circuitry, a delivery motor-control circuitry, and a system control circuitry, are carried.

The coreless DD motor only for a disk is adopted as a motor.
A pulse-control motor is adopted also as pickup delivery, and position control of the micra unit of measure is made possible.

16 bitD/A converter which NEC developed is adopted as a digital analog converter.
The influence of the error and operating temperature resulting from the variation in an element was corrected quickly, and the low distortion is realized.

Four kinds of play time windows are possible, and the real time of the music under play, the real time of the music under present play, the play time of disk all songs, the residual time of the music under present play, and the residual time of an entire disk can be displayed by pressing the WAIT-TIME key.

If the auto start organization is built in, it connects with an optional audio timer and an auto start switchpoint on the back is turned ON, timer set time can be made to start an automatic performance.

The remote controller is attached.


Rating of a mode
Form Compact disk player
Pickup scheme GaAlAs semiconductor laser
Sampling frequency 44.1kHz
Quantifying bit number 16-bit linear line
The number of channels Two channels
Frequency characteristic 5Hz-20kHz±0.5dB
Dynamic range 90dB or more
SN ratio 90dB or more
THD 0.01% or less (5Hz - 20kHz)
Channel separation 70dB or more (5Hz - 20kHz)
Wow and flutter Below a limit-of-measurement value (quartz-crystal oscillation precision)
Output Fixed termination: 1.5V/470 ohm
Variable termination: 0V - 1.5V/2.5kohm
Access time An average of 3 seconds
Memory functionality It is a memory possible to 99 music at a special-NetWare-program number and a subnumber.
Supply voltage AC100V, 50Hz/60Hz
Power consumption 48W
Dimensions The width 430x height 150x depth of 360mm
Weight 12.0kg
Adjunct Infrared remote controller