YAMAHA CD-X3
¥ 44,800 (released in 1985)
Commentary
CD player developed as the 3rd series of mini component size of 340 mm width.
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 uses a 3-beam system, in which three beam lines are applied to the track direction, the signal is read with the middle beam, and the track shift is detected in real time with two beams.
A high-precision trace of ± 0.2 micron has been realized by a three beam system and a high-speed servo mechanism.
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.
The CD-X3 analog CD-X3 consists of a third order active filter, which suppresses abrupt changes in phase characteristics and acquires simple characteristics. The analog low-pass filter also uses carefully selected high-quality capacitors.
It is equipped with functions such as 9-track random program function, repeat playback of all songs / programs, 2-speed search, and index search.
It has a headphone port.
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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 | 3.5kg |