Yamaha INTRODUCES THE SECOND-GENERATION GAP.
Second generation CD players have come a long way. But none come close to the new Yamaha CD-X1. It is the most technically advanced, user-friendly high-performance CD player you can buy.
For two small reasons.
LSI. Q.
Meet the YM-3511 and the YM-2201, two high density, highly "intelligent" LSI's specially developed and patented by Yamaha. Together, they can do the work of many multiple LSI's and integrated circuits.
And do it better. (See sidebar)
Because of them, the CD-X1 performs better, weighs less, takes up less space. And costs less money.
OUR LASER'S EDGE.
The CD-X1 also incorporates a remarkably compact three-beam laser combined with a super-smooth ceramic bearing in the disc drive motor. This advance, coupled with our proprietary LSI's servo control circuitry, provides exceptionally stable beam tracking for exceptional audio performance.
TRUE CONVERSION.
Highly accurate conversion of the digital signal to an analog signal is critical for optimum playback performance. Most CD players perform this conversion at the standard sampling rate of 44.1 kHz. Again because of our superior LSI technology, the digital filter system in the CD-X1 doubles this rate to 88.2 kHz. This over sampling virtually eliminates phase distortion and greatly improves playback resolution.
AT YOUR CONVENIENCE.
To make using it as pleasurable as listening to it, the CD-X1 has a long list of user-friendly features. Like three different play modes for greater playback flexibility. A multi-function time indicator. Simple and versatile memory programming. And a very convenient music search function that allows you to find selections or individual passages within a selection at the touch of a button.
But perhaps its most user-friendly feature is the $599 price tag.
The CD-X1 from Yamaha. The others don't have anything like it. But you can have one just like it. At your Yamaha dealer now. Suggested Retail Price
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The LSI Story.
The 40-pin YM-3511 LSI (Large Scale Integrated circuit), using a process called Cross Redundancy Check, "inventories" the digitally encoded information on the compact disc into audio bits (used to code the music), parity bits (used for error correction), control and display bits (used to index program selection and give front panel readout information). The YM-3511 also checks playback speed by referencing a crystal oscillator against additional synchronization bits to control disc motor speed.
At this point the digitized signal is fed to the 64-pin YM-2201 LSI which digitally doubles the sampling frequency from the standard 44.1 kHz to 88.2 kHz.
The YM-2201 then performs a digital filtration process before the signal is paced to the digital-to analog converter. When this process is performed by conventional CD players, a very sharp 50dB/octave analog filter is used to cut off frequencies above 20 kHz that are generated by the 44.1 kHz carrier signal.
This causes phase anomalies which tend to degrade the correct harmonic structure of the music. The result is a loss of dimensionality in the music.
Since the YM-2201 performs this function digitally at 88.2 kHz, proper phase relationships remain intact and the music retains the live sound of the original performance.
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Yamaha Electronics Corporation, USA, P.O. Box 6600, Buena Park, CA 90622. YAMAHA
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Like Yamaha CD? Have a look at:
Yamaha CDX 1120 CD player (advertisement, Jan. 1990)
Yamaha -- more second-generation CD technology (Sept. 1984)