YAMAHA CD-100X
¥ 59,800 (released in 1985)
Commentary
Compact CD player.
We have adopted a newly designed LSI that is finer than before and has increased the circuit integration by adopting the 2 μ m rule.
The signal processing LSI with built-in digital filter is an N-MOS type, and has a structure that integrates various digital signal processing including interleave demodulation, error detection and error correction.
The servocontrol LSI is a C-MOS type that enables high-speed processing and low power consumption. It performs signal processing such as demodulation of EFM signals and sub-codes as well as various servocontrol including optical heads, and eliminates the influence of disturbance and provides highly reliable disk control.
The optical head employs an axis slide type actuator, which realizes high tracing capability by combining it with a high-precision high-speed servo system combined with a CD LSI.
The aspherical objective lens realizes a simple head part.
Equipped with a digital filter with 2 x oversampling, the CD signal sampled at 44.1 kHz is doubled to 88.2 kHz, reducing the load on the analog low-pass filter.
In addition, the analog low-pass filter is composed of a third order active filter abrupt changes in phase characteristics and acquires simple characteristics. The analog low-pass filter also uses a carefully selected high-quality capacitor.
It is equipped with functions such as 9-track random program, repeat for selecting all tracks / program, index search, track search, and 2-speed search for monitoring.
Equipped with 4-digit LED display.
It has a headphone port.
Model Rating
| Type | CD Player |
| Optical head | 3 Beam Laser / Axis Slide Type |
| Filter | Digital filter Third order analog active filter |
| Frequency characteristic | 5 hz ~ 20 khz + 0.5 -1.0 db |
| Harmonic distortion factor | 0.004% (1 kHz, EIAJ) |
| Signal-to-noise ratio | 98dB(EIAJ) |
| Dynamic range | 95dB(EIAJ) |
| Channel separation | 90dB(1kHz) |
| Wow flutter | Below the measurement limit |
| Output voltage | 2Vrms |
| Feature | Nine track random program Index search Repeat (all songs / program songs) |
| External dimensions | Width 340x Height 92x Depth 290 mm |
| Weight | 3.6kg |