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Real Sound Processor
RSP-AZ9EX
Latest “Real-Sound Processor”,
RSP-AZ9EX
<< A Designer’s Message from SPEC CORPORATION >>
Shirokazu Yazaki
SPEC CORPORATION / Engineering
The bottle
neck of “High Fidelity” reproducing
In these days, by the benefit of the latest higher resolution streaming
music software, the upgrading the sound quality of reproducing vinyl record
and also the recent progress of digital technology, it would be generally
regarded that the total quality of the audio system have been looked like as
achieving at very close to the summit of audio technology. But I feel and
understand that there is still a big bottle neck for getting “High Fidelity”
reproducing. The bottle neck must be for sure a difficult task to resolve
because that it would be inevitably related to the fundamental principle of
physical phenomenon or the natural laws and so we have not reached at
fully-fledged solution for it.
But now I realize that the bottle neck must be speaker itself and I’d like
to refer to this bottle neck below ---. “Needless to say, speaker is the
transducer which converts some electric energy to kinetic motion. But if I
were to say frankly, this transducer would have a collectivity of imperfect
characteristic for being driven by amplifier. How fluctuant the impedance
frequency characteristic is, you might have known well. And it might be
quite simply the hard load of amplifier. But also you should remind one more
thing, “Counter-electromotive Force” of speaker. The motion of speaker is
started in the magnetic circuit or voice-coil of the unit or driver by the
current be flowed from amplifier on “Fleming's left-hand rule” and at the
same time this motion raises up the counter-electromotive force in the
voice-coil by “Fleming's right-hand rule”. It is true that amplifier drives
speaker but it would be one more fact that speaker negatively affects
amplifier by this “Counter- electromotive Force”.
The purpose and the function of “Real-Sound
Processor”
Our “Real-Sound Processor” has two major functions; one is making
an improvement to reduce the fluctuations and the revel of speaker’s
impedance frequency characteristic in mid and also high range. The other is
the ability of absorbing the some level of that counter-electromotive
current from the voice coil of driver and cancelling the inductance
component of the voice coil and the network composed of some inductors.
Accordingly, our “Real-Sound Processor” makes amplifier possible to drive
the speaker more faithfully, in other words, more phase-coherently for the
music signal, improving the sound resolution and the start-up, also
reproduces natural resonances. Above all, you could find out the deep, rich
and fascinating tonal characters you have never experienced before and also
feel and agree how amplifier could drive speaker easily!!
Latest
“Real-Sound Processor”, RSP-AZ9EX
We have introduced three models, RSP-101, 501 and 901EX for all over the
world through seven years. And thankfully and fortunately enough, we got a
lot of very positive feedbacks from the real customer all over the world.
These must be the distinct evidences, I explained above. And in these
experiences,
now I reached at the conclusion that the improving effects of “Real-Sound
Processor” would be mainly related to the sound and tonal character of the
passive parts, the capacitors and the resistors, just installed and featured
in the processor.
To tell the truth, I had thought that RSP-901EX might be the best or final
“Real-Sound Processor” until the last summer. Because that I had come across
or succeeded to produce the best sounding capacitors, some value of Green
Cactus by Arizona Capacitors, Inc. and our mica capacitor, specialized for
audio signal use.
But also I have long searched for the favorable sounding resistor and at
last fortunately found out the resistor it has almost ultimately
sophisticated and desirable sound character just one year before. In
Japanese, there is the word, Ne-Iro, it means tone or timbre in English.
“Ne” means ‘sound’ and “Iro” means color. By analogy Ne-Iro – or
‘sound-color’ – would be the color contrast character of lenses or films, as
expressed in photographs or films. Richer contrast could bring us some kind
of excitement when we see these pictures. A sharp and clear focus for the
subject of is an important factor for creating impressive photographs, just
as a clear-cut sound image is for creating Real-Sound, I suppose. When I
think of the sound and the tone of the resistor series, I am reminded of the
very rich color contrast and sharp focus of my very old lens, Contax Sonnar
T* 85mm/f 2.8 made in West Germany by Zeiss.
Well, as the consequence with using RSP-AZ9EX, you could now further enjoy
your favorite music and experience more natural and organic tone and also
higher resolution sound throughout entire range with rather than RSP-AZ9EX.
The new
wooden box, made of Manchurian walnut (Japanese walnut)
You could also enjoy the natural color and grain of Manchurian walnut and
this light-colored box with the rigid wood could bring you substantial and
rich mid & low tone. And the wooden box is produced by
Shirakawa Co., Ltd, a famous furniture
maker in Hida-Takayama, well-known historic town of Japan.
I’d like to strongly suggest you to
try an exciting adventure with RSP-AZ9EX only for fully enjoying your
audio-life through the outstanding musicality of latest “Real-Sound
Processor”.
برای مطالعه ی
ترجمه متن بالا به فارسی لطفاً اینجا را کلیک فرمایید
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RSP-901EX
You could recognize at one hearing, PSP-901EX is not only
an audio-accessory but also a real audio-gear for improving the sound
quality of your system dramatically. The sound will be more clear and
natural throughout entire range with 901EX. You could feel and experience
more real sound with a full of musicality. In a word, you could be convinced
that 901EX brings out fully potential of your audio system!!
The function of "Real-Sound Processor"
The operating principle of "Real-Sound Processor" had been made in public on
the Japanese specialized magazine named MJ, "AUDIO TECHNOLOGY" by Mr.Yasui
throughout 1971. He just drought out this concept as " Impedance Correction"
for speaker. Yasui-san was a senior amateur researcher and a person of
authority of semiconductor linear amplifier. At that time he got into the
conclusion that only the pursuit of improving the static characteristic of
power amplifier could never bring the superior sound. And also he set up the
importance of amplifier’s dynamic characteristic including the actual
movement of speaker to get musical sound. But still right now, after more
than 40 years passed, we regard his view point as an excellent insight and
much further a relevant challenge for the present "audio-technology". Sorry
to say, we should recognize we only know the improving the dynamic
characteristic of the system consisted of amplifier and speaker might be an
extremely important factor for getting superior sound quality. For that
matter, we are not able to reach at an effective measuring method to be
fixed the dynamic behaviors and also expose the real relations between the
characteristic and our hearing. We suppose, so many reasons might exist. But
one of the major difficulties of analysis of the dynamic characteristic
would be speaker itself. Needless to say, speaker is the transducer which
converts some electric energy to kinetic motion. But if we were to say
frankly, this transducer would be a collectivity of imperfect characteristic
for being driven by amplifier. How fluctuant the impedance frequency
characteristic is, you know. Yes it might be quite simply the hard load of
amplifier. But also you should remind one more thing, "Counter-electromotive
Force" of speaker. The motion of speaker is started in the magnetic circuit
or voice-coil of the unit by the current be flowed from amplifier on
Fleming's left-hand rule and at the same time this motion raises up
counter-electromotive force in the voice-coil by Fleming's right-hand rule.
It is true that amplifier drives speaker, but would be the fact that speaker
affects amplifier by this counter-electromotive force. And this
counter-electromotive current returns to the amp via the speaker cord,
making it difficult to drive speaker in accordance with the input signal.
And this current causes negative effect especially on the traditional
semiconductor linear amplifier. Since the transfer function of semiconductor
is poor in linearity compared to tube, this type of amplifier inevitably
needs correct the static characteristic by performing negative feedback
circuitry. But this negative feedback makes the amplifier stage vulnerable
to the counteraction, counter-electromotive current from speaker, causing
complicated phase delays inside of amplifying stage. Needless to say, this
physical phenomenon hurts the sound quality of the audio system including
amplifier and speaker.
The effect of "Real-Sound Processor"
Because again, our "Real-Sound Processor" has two major functions, one is
making an improvement to reduce the fluctuations of speaker’s impedance
frequency characteristic. The other is absorbing that counter-electromotive
current from speaker including network composed of some inductors.
Accordingly, the processor makes amplifier possible to drive the speaker
more faithfully for sound source, improving the sound resolution and the
start-up, also reproduces natural resonances. Above all you could find out
the deep, rich and fascinating tonal characters you have never experienced
before and also agree how amplifier could drive speaker easily!!
Our latest "Real-Sound Processor", RSP-901EX
We had tried so long time to seek out improving the sound quality of
"Real-Sound Processor" and learned that only the tonal or the sound quality
of the parts, resistor and capacitor decide the sound itself. You should
recognize that the perfect characteristic resistor and capacitor has never
existed at all ages and countries. For example, capacitor is consisted of
mainly capacitance, small quantity of resistance and inductance. Also we
should remind the matter of material’s physicality. Sometimes when we make
hearing tests for capacitor, we feel the unique tonal character of
dielectric material or electrode itself.
But fortunately early 2014, we met up with the outstanding quality parts. It
was the highest quality and state-of-art hermetic seal oil-filled capacitor,
named "Green Cactus" series made in USA, by Arizona Capacitors, Inc. This
type of capacitor could make it possible to get the live and natural sound
of new "Real-Sound Processor". And in this summer we released RSP-701 for
our domestic market. And now thankfully, 701 is the successful product in
the field of audio-accessories.
By the way, language above all Japanese is far away from European language.
They say that Japanese is vowel sound but compared to this Japanese, major
European language is made of consonant. And this consonant is surely
consisted of high frequency spectrum. So we supposed that European might
have more sensitive hearing for high range than ordinary Japanese and
determined to change to another "Green Cactus", it reproduces much finer
mid-to-high range. And also we converted the resistor adopted in 701 to
another one which has the smoother and more open air character.
As well, please pay attention to the appearance of RSP-901EX. It’s like a
jewelry box made of real spruce from north America with string instrument’s
color. And 901EX’s box is produced by famous "Shirakawa Co., Ltd" at
Hida-Takayama, beautiful historic town. You will see also woodworking is the
Japanese traditional handicrafts.
We believe firmly that RSP-901EX could bring out the full potential of your
system and you could fully enjoy the "Real-Musicality" through "Real-Sound"
of 901EX!!
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