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New evolution of universal player matching to SACD multi-channels
Reproduction with the overall specifications of optical disk.
Here comes out the universal player DU-7 boasting high sound quality.
Not confined by the specifications of media, all of the digital sources being
able to be freely enjoyed with a higher grade is a desire for all audio-lovers.
Based on this idea, Luxman has in 2000 launched universal player DU-10 for
matching to all 12cm optical disks. For improving the excellent sound quality
of h
igh format media, the tapping of deep potential of universal player for
the leaping improvement of the music reproduction in the existing CD was
proposed again.
Now on the basis of technology and know-howcultivated through the
development of DU-10, the new model DU-7 that could matching to the new multi-channel format of SACD was launched. High-end level could be
gained from not only DVD video, DVD audio, SACD, but also from CD
player. This is the DU-7 which was produced by Luxman by installing
the self-developed FE·DAC and by establishing audio brand in the
universal player which could replay all of the digital sources with one
player. It is a new proposal from Luxman.
The dual DAC construction of FE mode and Shanon mode
T h e b a n d l i m i t o f f r e q u e n c y t h a t c o u l d b e h e a r d b y
human ear is 20kHz In reality, the sound with its band
surpassing the audible frequency exists, and the natural
s o u n d i s g e n e r a t e d b y c o m b i n i n g a u d i b l e f r e q u e n c y
with non-audible frequency But, when recording music
information on CD, the frequency above 20kHz will be
deleted Here comes out the FE (fluency), a perfection
theory developed for reproducing the sound with its
frequency over 20kHz from the above-mentioned CD
format
In DU-7, two kinds of DAC was built in One is "FN1242A" applied the FE perfect
function developed by Luxman, the other is "CS4392" Shanon format developed by
Shiirasu Logic Company adopted in the original high end system By selecting the
favorable DAC with a feeling of changing the cartridge of analog player, one could enjoy
the different sound
Super-class 2+6ch DAC
block pursuing full play of
analog characterist
In the Shannon type, the wave form almost the same with the wave form formed after limiting the band with pre-filter could be gained,
but it is a wave form different form the original signal. Compared with this, in the FE type, it could faithfully reproduce the wave form
of the original signal although it is different from the wave form after limiting the band.
Matching to the SACD multi-channel soft
This is the attractive SACD as a new generation format of music CD DU-7 could match
to the reproduction of SACD multi-channel soft By adding to the CD, DVD audio, DVD
video and matching to the SACD multiple reproduction, it could actually cover all the
12cm optical disk media used for audio It has the real power as an universal player In
SACD and DVD video, the multi-channel source could be freely down mixed on the
2ch/4ch, etc (medium) with the functions of speaker configuration In addition, the 5 1ch
Dolby digital (AC-3) of DVD video soft and the DTS sound could be decoded inside the
player, and could be externally output via the analog circuit of high quality multi-channel
It could be used as pure audio special machine with video OFF function
For eliminating the interfering noise of each circuit, Luxman
has poured all of the know-how accumulated for years in the
production of amplifier First of all, every circuit should be laid
out in their ideal positions And it has adopted the shield barrier
which could control the noise by the case construction, and made
every effort for treating the noise While adopting the video
image circuit, the DU-7 has considered how to use the pure audio
environment It is also installed with the video OFF function for
completely shutting off the impact from video circuit exerting
on the audio signal, as well as on the power circuit Thus it is possible for using it as the special
player purely for audio
Record system
Original signalPre-filter band after limiting
disk
Reproduction sound signal Shannon type
Reproduction sound signal FE type Reproduction system
The feature of data perfection filter in
PCM data reproduction
Impulse response
Step response
Frequency
Characteristic Fluency type
Shannon type
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The dedicated chassis construction
The articulation board constituted with the
cast iron and the insulator are adopted on
the chassis bottom Thus it has achieved
s u r p r i s i n g l y l o w r e s o n a n c e a n d c o u l d
completely eliminate the impact exerted
on music and image signal by un-wanted
vibration In addition, the efforts dedicated on
audio chassis for improving the high purity
music signal, for example, by adopting the
"Vertical construction" separated from other
blocks have further enhanced the grade of
audio player
Sufficient high grade output terminals are equipped with
RCA/XLR is collected, 2ch analog output terminal group
For poerfercting the pure sound and image of Luxman, the 2ch analog output terminal was
equipped with RCA terminal and XLR terminal The treatment of high purity gold plating was done
and 5 1ch Dolby digital output terminal, coaxial digital output, etc are prepared By adopting the
terminal group of component output terminal, D1/D2 S1/S2 terminal, coaxial output terminal in the
image, it could match to the broader connecting environment for the high end audio player and the
reproduction machine for image
The high bit function which could improving the resolution was built in
Through the installing of the "high bit function" which has re-quantized 16bit data
recorded on CD and DVD into 24bit data of the highest position format of DVD audio,
the resolution of sound becomes fresher, and the sound becomes much like the natural
sound
The special transistor specially used in audio circuit and high
inertia power source
In audio circuit, the special R core type transistor separated from the digital circuit was
built in Because it has taken the "high inertia power source" format in the circuit which
realizes the reproduction of natural music, so the ordinary sufficient energy was kept
in power source part Powerful pure power could be provided to meet every rising and
falling of the sounds at any moment
A great deal of high quality original custom-made parts are put into use
In DU-7, original high sound quality custom-made parts of Luxman are used in every
part The resistors are at audio special grade and have the features of high-density
information volume and super-lower distortion using in high-end amplifier It could not
only wholly keep the tiny nuance in sound, but also could meticulously reproduce the
background space where the music was played On the basis of know-how developed
after long years cultivation on audio by Luxman, the capacitor has adopted original series
that have removed the impact on the music sound For thoroughly pursuing the pure
signal, the study and inspection are completely conducted on the items from material to
the structure
In the high level 108MHz/12bit DAC adopted in DU-7s image system, the ADV7300
made of Analog Device Company enjoying a high evaluation in the world was adopted
Combined with the results of the newly-developed analog filter, the excellent S/N and
linear image quality could be obtained Furthermore, with the installation of super fine
focus digital filter, 540 pixel of horizontal resolution could be reached The circling noises
occurred at unwanted bands will be cut down greatly, a fresh contrast and sharp profile
expressive force could be obtained
Pure cinema progressive circuit was built in
DU-7 could obtain the faithful reproduction force from the original image by adopting the
pure cinema progressive circuit which could carry out automotive process in accordance
with the image It could not only faithfully reproduce the original high definition image
on the basis of 2-3 pull down processing information after telecine changing some works
such as the films recorded on DVD from the source material of film, but could also bring
the smooth and natural actions via the high resolution algorism processing
High resolution image gained from 108MHz/12bit DAC
