Intervju F. Kuzma

avdio-sem so premaknjene tudi vse stare teme

Intervju F. Kuzma

OdgovorNapisal/-a klekovaca » So Dec 23, 2006 6:34 pm

Intervju z Kuzmo na ital. www.videohifi.com
klekovaca
 
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Pridružen: Ne Sep 10, 2006 8:05 pm

OdgovorNapisal/-a fotr » Ne Dec 24, 2006 2:02 pm

saj v tej reviji si pa že bil, ne sicer tvoj lepi obraz ampak če se ne motim, so razdirali Stabija reference
A jest ne najdem angleškega teksta ali ga res ni? Moja Italjanščina je bolj za Ponte rosso, glih tolk, da nisem lačen in žejen.
fotr
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Pridružen: Pe Feb 18, 2005 10:37 am
Kraj: Škrilje vas nad Igom

OdgovorNapisal/-a jr » Ne Dec 24, 2006 3:51 pm

Evo, sem se "mal potrudu" in sem spodaj naredil prevod omenjenega intervjuja iz italijanš?ine v angleš?ino s pomo?jo enega od prevajalnikov, ki se jih dobi na spletu. Sam sem sicer na hitro preletel tekst in se mi zdi, da je še kar smiselno preveden. Je pa res, da ne znam italijanš?ine in ?e opazite v tekstu kakršnekoli napake nesmiselnega prevoda, jih prosim sporo?ite ter se za njih tudi opravi?ujem. :lol:

lp

JR

Two interviews -- of Igor Zamberlan In occasion of the recent one show of Lubiana... We recommence: I have lacked the occasion to go to the recent one show of Lubiana to the last moment, for others and intransgressible engagements, than null they have to that to make with the aifai. But I had a pair of appointments with two constructors (thanks to the auspices of their Italian distributor, Audio Lyric). One is famous practically to all those that take delight in of analogic, the other is still little famous here from we, but it seems to have stoffa. Draft of Dejan Nikic, the mind behind the brand NAT, Audio Nikic Team, that it constructs one series of most interesting and innovative electronic valvolari. Franc Kuzma


IZ: It seems to me that in the Kuzma production they are produced to us that they use various principles, some record players are suspended, others are rigid. An arm is unipivot, others is to bearings, then is the Air Linens that are a tangential one to air. It seems that the approach is much open, insomma. Six "not married" to a single type of plan. But which are the processes that carry to the various ones chosen? The idea is that one of the best solution to a data level of price?


FK: They said that the idea is that one. The lowlands of a record player rigid logon between the hinge of the plate and the arm is one. This dev' to be the how much most possible one isolated from the external vibrations, like is the noise of the motor, the acoustic feedback, all the coming from structural vibrations from the surrounding atmosphere. One of the approaches is that one to use a system that filters, like that one with suspension and mass, that it filters the vibrations until to around its frequency of resonance. For the better isolation, the frequency of the lowest resonance dev' to be possible, we say around to the 2-3 Hz, that it is not easy to obtain maintaining the stability. To dampen helps, but the sensibility of the system increases. At the same time, we must make to turn the plate, connecting the motor. If we mount it on the same base of the hinge and of the arm, we introduce the vibration of the motor in the system. If we mount the motor separately, we avoid the vibrations, but we introduce one bad dynamics transmission of the movement with the strap. Therefore the task of the planner is that one of sccegliere the construction and like resolving these problems in practical. Sure, I use it of the properly distributed mass is a good approach. But it must make it so that the used material does not become sensitive, does not pick up vibrations. As an example, if a thin shelf is used and rigid and then us arm and hinge are mounted over, when test to strike itself on it, begins to vibrate -- and this means undesirable movements between stilo and furrows. At the same time, that shelf picks up vibrations from the outside. But if a full and rigid bar is used, like in our small record player, one finds to us with something that it is to the contempo rigid and decidedly immune to the external vibrations. The idea has come to me to the half of years ' 90 -- I do not know because it has not come to me before... The lack of a suspension is also the better solution for those sistemazioni in which the pavements they are unstable, flettono or is sensitive to the step of the persons. Intuitivamente, this could seem a controsenso. The problem is that the vibrations would not never come dampened and therefore the system could oscillate to along -- often forgets that it is the arm that is not stable how much the rest, and therefore it stretches to jump outside from furrows. Here the damping of the arm can come in aid. Therefore, for the more economic record player, it arranges rigid not suspended. For the more expensive models, suspension with high damping and for top the high mass -- than coast, like the machinery of precision. But a lot will depend on the pavement and the table on which the record player it will be put. Arms: simplest it is the unipivot, can be made in excellent way to reduced costs. The bearings are not easy to use, but an arm is obtained that it does not oscillate horizontally, as instead they make the unipivot. The suspension to air, if it comes done good, is expensive because they serve compressed air and filters, but is more rigid than whichever other thing and is without clutch. Naturally, with every approach many beloveds or many economic can themselves be made objects. But I try to always plan so that every our product has the better relationship quality possible price.


IZ: Multiple motors. Mark di Audio Lyric (the Italian distributor) has spoken to me about the new version to four motors of the XL. There are persons who think that the multiple motors are the solution and ce they are some that they think that more motors wants to say more problems. According to costoro, the motors would give to annoyance one with the other, causing speed instability and increasing the noise. My personal experience with the Stabi Reference, that it has two motors, is that the instability is not a problem (and the unstable speed gives much annoyance to me). The ideas of those who criticize the multiple motors are lacking in foundation or use particular techniques?


FK: I could begin with one battered: the motors of the automobiles are sweeter in the distribution if they have more cylinders. Yes, the single cylinder one is simpler, but more cylinders give to sweeter power and greater brace, always. As you know, all the electric motors ruotano and in one spin (360 degrees) of a rotor, the power not there à always all. In some point there is one pushed, and then there is an interruption, and therefore it is like if the spin it were impressa in discontinuous way, push-button. Sure a heavy plate has of inertia, that it compensates this. But, second theory, if we stop the rotatorio moment on a plate that turns, however will begin to slow down its spin. Not a lot, obviously, and cannot be measured easy. But it thinks if this happens in the moment in which the testina it reads the played beginning of a famous one from a low acoustic. It will distort. Not, not in the sense that will slow down, but in the sense that the attack and its harmonicas will be distorted. It thinks if it happens in means of growing orchestrale. Music will not play slow, but we will feel the single instruments with greater difficulty, various from as we feel them from the alive one. Naturally, the rest of the system, in order to feel this, dev' to be to the height. Therefore, the more motor it means more impulse, little interruptions in one spin of the plate, traction of the more uniform plate, therefore little rallentamenti. Test also to think that two various motors work in accidental way from the point of view of the impulse, that it is best respect to have them sincronizza to you. Therefore some factors must be control to you with precision, others instead are less important.


IZ: And what tasks of the new big wave of record players that use the magnetic transmission between motor and plate? And, already that there are, of pulley and direct traction?


FK: The magnetic traction has, second me, likenesses with the traction to strap. In every case, motivating force between motor and plate is one. As you know, if you have two magnets you have also of possible the elastic movement between they. In practical it is like are made the electric motors. If you hold with two magnets, and tests to put two equal poles attack to you, it finds that it is much difficult one to approach them. The directions move in all, and feel one species of motivating force. The same one happens if you put with the two opposite poles, has the tendency to attrarsi, is much difficult one to hold them to one fixed distance. If it watches the magnetic hinges, you see that a some system serves you servant in order to maintain the centratura. Therefore, also not having tried in practical, creed that is a problem of control, and feedback from the plate to the motor, that it must react to the demands for spin in every moment. And the motor and like having one is easier to preview like a strap filters the vibrations sweet spin to comparison of the magnetic connection or the direct traction. In order not to speak about the magnetic field in proximity of that one of the testina, or the effects of the field on the same motor. And of the possible induction on the wiring of the arm. The pulley sure is a more rigid pilotage of the plate, and is similar to the traction with the magnetic tape. But creed that is problematic much to obtain one the precisest and sweet traction, constant in every moment. The best control systems to direct traction are almost continuous and however it gives same the impulses. The best controls are in a position to controlling the pilotage 15000 times for spin, but alone they cost more than 10.000 Euro. Creed that the vibration of motor the arrivals to the plate, and that constant and sweet spin is more difficult to have one all the time with one pulley or the direct traction [ regarding the strap ]. A point is which is the used technology, an other point is com' is put in practical -- in the practical execution the real advantages and disadvantages can only be judged.


IZ: "the LP is returned" or "the rebirth of the analogic one". E' truth (that is you have had an increment of sales lately) or -- not being never died -- the LP cannot "rinascere"?


FK: Sure there is greater interest today towards the LP of how much ce was some year makes. They demonstrate to the greater number of constructors and the quality, today better, of the products. We of Kuzma are content of the fact who we are maintaining and also improving our position like one of the constructors top of record player and arms.


IZ: You have never considered to expand your production to others you leave of the chain hi-fi? Creeds in an approach specialized to the planning and the construction? It seems me to understand that you are also distributing, in Slovenia, of other Marches...


FK: We are a lot taken from ours puts into effect them production, and we are preparing of the innovationes in the field of the record players for the next years. To add various, diffusing or electronic products, means to have to add deep, plants of production, and probably to come down to compromises on our products puts into effect them. But perhaps, goodness knows, in future, something could even come outside. We have cut the number of marks enough that we distribute in Slovenia, today we have little marks selects to you. We make by now for passion, a po' like high fidelity in himself.


IZ: Large thanks for these interesting reflections. I add that it will arrive, to the next year, a new arm, much particular one, that it would have to become part between the Stogi Reference and the Air Linens. The little advances that I have collected make me to think next to something a lot, a lot interesting.
jr
 
Prispevkov: 36
Pridružen: To Feb 21, 2006 7:03 pm

OdgovorNapisal/-a kuzma2 » Ne Dec 24, 2006 8:18 pm

Meni ni nič kaj dosti razumljivo.

Bogve kaj bi se zgodilo s tekstom, če bi ga prevedli nazaj v angl. in potem še enkrat nazaj iz italij. v angl. Mogoče bi pridobili na pomenu.
FK
kuzma2
 
Prispevkov: 1707
Pridružen: Pe Mar 11, 2005 3:22 pm

OdgovorNapisal/-a fotr » Po Dec 25, 2006 12:38 am

Sicer zanimiv poskus, ampak če še tebi ni čisto razumljivo, potem je čisto razumljivo, da sem se počutil kot "kronan osel", ker nisem vedel ne kaj IZ sprašuje in še manj kaj FK odgovarja. Tu pa tam se mi je zašajnalo kot zvezda repatica, ampak morda tudi zato, ker je danes 24. dec, pa naj bi se repatica tako ali tako pojavljala. Morda pa spraševalec res ni vedel kaj naj vpraša? Oziroma je ...ma kva pa vem, zdej je že polnoč preč, grem spat. Brez veze da filozofiram
fotr
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Pridružen: Pe Feb 18, 2005 10:37 am
Kraj: Škrilje vas nad Igom

OdgovorNapisal/-a kuzma2 » Po Dec 25, 2006 8:55 am

Analogno tehniške prevode prevajati preko digitalnega prevajalnika????No nekatere stvari so razumljive, nekatere so pa popolnoma brez veze:


Takoj na začetku:

"The lowlands of a record player rigid logon between the hinge of the plate and the arm is one. "

Npr. prevajalnik je našel besedo pri delu o štirih motorjih, da so "sweeter runing", moralo pa bi biti "smoother running" in vsak ve , da motor z več cilindri teče mirneje......


Bom poskusil najti tekst v angleščini, ki bo mogoče bolj razumljiv!
FK
kuzma2
 
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Pridružen: Pe Mar 11, 2005 3:22 pm

OdgovorNapisal/-a kuzma2 » Po Dec 25, 2006 9:03 am

Evo teksta, ki je samo osnova in povzetek zgoraj omenjenega teksta:

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1.
I would say the latest. The basis of turntable is a rigid connection between
platter bearing and tonearm. This must be as much as possible isolated from
external vibrations such as motor noise, acoustic feedback and all
structural vibrations coming from our surrounding.

One of the approaches is to use filter system such as spring&mass system
which filters vibration about its own resonance. For better insulation
should be this as low as possible, let say 2-3 Hz which is not easy to
achieve to be at the same time stable. Damping does help here, but increase
system sensitivity. At the same time we need to bring rotation from motor to
platter. If we fix motor on the same chassis as tonearm and bearing we
introduce motor vibration in the system. If we mount motor separately we
avoid vibrations but we introduce poor dynamic drive via belt.

So it is up to a designer which construction and how it will solve problems
in practise.

Certainly using mass as properly distributed material is good approach. But
you must design it in such way that material itself is not sensitive to pick
up vibration. For example if you use thin rigid plate on which you mount
platter bearing and tonearm, then knock it - it will vibrate and that means
unwanted monuments between needle and groove. At the same time such plate
will pick up more vibrations from environmental. But if you use rigid solid
rod as in our smallest turntable you got very rigid and minimum sensitive on
external vibration. Why I did not use this simple and effective approach
many years ago. Because it just occurred to me mid 90ties.

Not being suspended it is also the best situated for old houses with wobbly
floors-you would thing sure it is better suspended turntable. Problem is
that suspension resonances occur in this spectrum and if not damped it can
oscillate for a long time. Of course it is often forgotten that it is the
tonearm which is not so stable as chassis and therefore needle jumps out of
the grooves.Here damping of the tonearm does help.

So for cheapest turntable solid nonsuspened system. For more expensive
models suspension with strong damping and for very best very heavy mass
which costs money- like machines for precise engineering. But all this will
be very much depended on floor and supporting stand.

Tonearms: the simplest bearing is unipivot and you can build the best
tonearm for smallest costs. Ball bearing are not easy to use but you get
tonearm which is not bouncing horizontally such as unipivot tonearm. Air
bearing,if made properly,is expensive due demand for compressed air and
filters, but it is the most rigid bearing and without any friction
vibrations.

Of course you can made with any approach very expensive or very cheap
products. But I always design as much as possible in such way that it always
any of our products the best possible value for money that we can built.

2.
More motors- more as a joke, but all car engines runs smoother with more
cylinders. Yes, single cylinder is simpler motor, but more cylinders give
more smoother power and more momentum at all the time.


As you know all electrical motors rotate and in one rotation( 360 degrees)
of a rotor drive is not there all the time. At some point is a push and
then lack of power- this making pulsating drive to platter via belt or
otherwise. Sure heavy platter has inertia which compensate for this.But by
theory at that moment when on rotating platter we stop rotational momentum
it will start slowly slowing down.Not for a lot, and you can not measure
this easy. Now imagine that this happened at that moment when needle should
start reading beginning of a note played on acoustic bass.It will distort
it. This does not mean slow bass but the actual beginning of note and its
harmonics are distorted. Or, if this happened in the middle of crescendo of
an orchestra. Music will not sound slow, but we will not easily hear
individual instruments , like we can hear them in the concert hall. Of
course it is up to the rest of the system if is capable of playing this.


So more motors brings more pulses and less gaps in one rotation, thus giving
more uniform drive to the platter at any given moment and therefore platter
is less time slowed down.

Also if you imagine that for example two motors works randomly is even
better then exactly at the same time giving out two pulses simultaneously.
So certain important factors must be precisely made, but some are not so
important.

3.
Exact details of the new tonearm will be reviled when tonearm will be
introduced- spring 2007. But it will be conventional tonearm with bearings
which gives the lowest possible friction and the highest stability. VTA and
azimuth will be easy to adjust. Bearing will be on four points- each point
being similar to unipivot bearing. Also it will be easy to set up and
adjust. There will be a few more surprises build in like damping and wiring.

You are right- lately is again more interest in analogy LP which also shows
increase in number of manufactures and increased quality of products. But we
at Kuzma are happy that we manage to keep or actually increase our position
as one of the top manufactures of turntables and tonearms.

Therefore this answers to your last question- we are very busy and also we
are planning new models of turntables in next few years which will keep us
busy. So if we would increase our production in other products like speakers
or amplifiers means new money, production facilities and probably
compromises on our existing products. But maybe in long term, something
might show up.


4.
Magnetic drive in my opinion has some similarities to belt drive. In both
cases it is a spring between motor and pulley.

As you know if you have two magnets where elastic movement between them is
possible. Any electrical motor is basically done in such way.

If you ever hold two magnets together and you try to put two same poles
together it is very difficult to put them nearer. It moves in all directions
and you feel springiness. The same applies if you put together opposite
poles which has a tendency to go together- it is very difficult to hold it
apart on small distances. If you look magnetic bearing you need a servo
system to keep magnetic bearing in the middle.

So I did not try it in practise but I would say that there is a question
how you control this and what feedback from platter gets motor back to react
on demands of platter rotation in any given moment. Also it is more
predictable how belt filter vibration from motor and smooth rotation
comparative to magnetic coupling or direct drive.

Not to mention that having magnetic field very nearby cartridge magnetic
field or magnetic shaft or effect on motors itself. Also possible induction
in signal wires in tonearm wiring.


Idler drive is certainly more stiffer drive to platter then belt similar and
it is more similar to tape drive. But I believe it is very difficult to made
very precise and smooth drive at any given moment. Best direct drive
controls motor all the time and yet still gives pulses. The best controls
rotation 15.000 times per rotation but it costs well over 10.000 Euros only
motor drive. I believe that more vibration comes to platter and that keeping
really smooth rotation of platter at any given moment is more difficult to
achieve with idler or direct drive.


One matter is which technology is used and another matter how is executed
in practise and only then you can see judge pluses and minuses of particular
technology.


5.
We cut down distribution in Slovenia and now present just a few very
selected companies. It is now more as a hobby as it is audio itself.

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FK
kuzma2
 
Prispevkov: 1707
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OdgovorNapisal/-a fotr » Po Dec 25, 2006 1:09 pm

Hvala, zdaj vem!
Lepe praznike
fotr
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