Tuesday, 18 December 2012

Marantz CD-94 150,000yen(1986 release)

They are a development track record until it results in D-63 (compact disk player of No. 1) - LHH2000, and the compact disk player developed based on the result of research.

TDA1541 which is 16-bit digital-analog-converter LSI which operates by oversampling 4 times is carried, and all digital decoders are 16-bit-ized. TDA1541 carries two digital analog converters only for Lch-Rch in LSI of a chip, and has banished phase gap of right and left.

CDM-1 mechanism employed also as the compact disk player for pros is tuned up and employed as a mechanism part.
By having made the preamplifier for laser signals conventionally mounted in the mechanism separate, a preamplifier circuitry is released from a fine oscillation of a rotation system, and also the circuitry itself is pursued on a large scale and in tone quality.
Moreover, a reinforcement rib is added to the mechanism unit by aluminum die-casting, and rigidity is improved.

It is the layout which banished the wraparound of the noise, constituting a digital circuit, the audio circuitry, the servo circuitry, the microcomputer, and the display-device circuitry from a circuit substrate which became independent, respectively, and suppressing a cross interferencee.

The large-sized transformer and the custom-made electrolytic capacitor of 68,000 micro Fx2 are adopted as a power-source part. Moreover, divide the sub- side coil of a power transformer into the object for digital circuits, the object for audio circuitries, the object for servo circuitries, and display-device circuitries four, it is made to become independent to them, and the measure against a noise is performed from the power-source part. Furthermore, a regulator circuitry is also discrete-ized and the noise of the power-source part itself is also reduced.

The die-casting chassis is adopted as a chassis and a self-weight and rigidity of the body are really improved combining the aluminum drawing-out top cover of molding.

Compact-disk filing bank FTS (Favourite Track Selection) is carried, and the permanent memory of the special NetWare program can be carried out. Moreover, programmed compact disk is distinguished automatically and the special NetWare program by which memory was carried out for every compact disk is played.

Almost all operations are possible at attached wireless remote control.

An AMS functionality, a timer play, etc. which reproduce the repeat mode of /1 music / all songs and the head of music one after another between a shuffle play, a special-NetWare-program play of a maximum of 20 music, and FTS / shuffle / special NetWare program / A-B are carried.

The headphone jack is carried.

The digital output termination of a coaxial is carried as it is optical. 





Form Compact disk player
Sampling frequency 44.1kHz
Quatization A 16-bit linear / channel
Digital analog converter The 4 time oversampling digital filter of a 16-bit
L/R independent 2DAC
Filter The 3rd Bessel filter
Channel Two channels
Frequency characteristic 2Hz-20kHz±0.1dB
Dynamic range 96dB or more
SN ratio 104dB(1kHz)
Channel separation 100dB or more (1kHz)
THD 0.0015% (1kHz, THD)
Wow and flutter Quartz-crystal precision
Error correcting system CIRC
Analog output 2Vrms
Digital output Coaxial: 0.5 Vp-p/75ohm
Optical: Optical-fiber connector
Laser AlGaAs semiconductor
Wavelength 800nm
Power source 100V, 50Hz/60Hz
Power consumption 30W
The maximum Dimensions Width 462x height 104x depth of 355mm
Weight 10.3kg
Adjunct Wireless remote control RMC-94


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