|230,000yen(around the 1990 time)
The bottom which pursued high-quality sound by
making a decoder part into an analog method is a Dolby prologic decoder.
While adopting as VCA TDA1074A which is the same IC as the decoder for
pros, the VCA offset trimmer (decoder circuit for pros) similarly employed for
pros was employed, and the separation aggravation by the variation in VCA is
Furthermore, a VCA control adopts F (1% of tolerance), and G (2%
of tolerance) lunk component partses as a filter, a time constant circuitry,
etc., and makes the min the error voltage by the variation in circuit component
The closed mold twin crossbar contact relay (a contact plates a silver
stand with gold) which guarantees a low contact resistance value and a
prolonged robustness is adopted as a switching of a signal.
In order to make a
tone-quality failure into a relative minimum, nine motor volumes including a
master volume are built in.
In a signal system on the street, no switching
with a semiconductor etc. is performed but variable [ of signal level / all ]
serve as a motor volume. Moreover, among these, eight pieces control with a
microcomputer, and the individual specificity of rotational speed is absorbed by
the standby learning function of a microcomputer, and is controlling by each
Have arranged the power transformer used as the big
source of an oscillation in the center, and the minimum weight balance was
secured, and also the main unit is firmly supported with the sole plate of 2mm
thickness, and heavyweight foot (380g 65phi 4 point or a 4th page
Moreover, the object for analog circuits and
the object for digital circuits are made separate, and, also structurally and
electrically, the power transformer is used as another case.
In order to
coincide the mutual phase of Lch/Rch of an input signal, a feeling of a
migration and a feeling of a lateralization of an exact sound are realized by
uniting phase gap with real time by an auto azimuth circuitry.
span or Lock Range±15 degree 1kHz)
The auto input balance circuitry is
carried and the variation in an input signal is automatically rectified in real
The users logic functionality which can make favorite sound field is carried,
and the functionality of a parameter set and surround invert can be used.
By a parameter set, the sound field of liking can be enjoyed
with the combination of the cut-off frequency (SR CutOff) of the effectiveness
condition (EFFECT Fr/Re) of a geotropism highlight circuitry, and the low pass
filter for surround channels.
By using DSP (digital signal processor) which uses no correlating-ization,
a surround area can be expanded and the same effect as having used more
than one with two rear speakers can be taken out.
The newly developed large-sized display tubes including a controller are
The external input terminal corresponding to a four-channel
broadcast (3-1 scheme) of HDTV is carried.
By various testing tone
functionalities, the optimal setting of a system is possible.
tone -- a test signal -- a front L channel -> center channel -> front R
channel -> center channel -> front L channel and a succession -- the image
of a testing tone moves to a law.
In a pulse-testing tone, a pulse is
simultaneously outputted from a center and a surround channel. In this case, the
listener can take in the orientation of an image from the channel which sound
reaches previously according to the Haas effect, and is effective in a setups of
When the parametric equalizer is carried and a center
speaker differs from a front speaker, the tone quality of a center channel can
The OFC very-thick power-cord metallurgy plating
termination is adopted.
Two kinds of remote Control units (setting
remote control / steering remote control) are attached.
The operation of the
usual operation is possible only with steering remote control.
||audio-video surround decoder
||Input, Ext.in:150mV /, 30kohm
|An Output voltage/impedance
||Front, Surround, Center, Mono:1V/600 ohm
|Analog system (Stereo,
||5Hz - -100kHz three dB
|SN ratio (Japanese Industrial Standard-A)
|Digital system (User's Logic,
||5Hz - -20kHz three dB
|SN ratio (CCIR-ARM)
||76dB (0dB=1V, headroom>=15dB)
||The width 430x height 140x depth of 407mm