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most extreme turntables

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nikolazec
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Re: most extreme turntables

Post by nikolazec » 11 Aug 2011, 19:55

Moram dodati da je celokupno podesavanje rucka glava neverovatno bitno za zvuk jer lose podeseno i od babaroge pravi babu i obrnuto . Toliko sam se puta uverio kuci
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Re: most extreme turntables

Post by dioklecijan » 11 Aug 2011, 20:16

Hm, ovo sa dva tanjura ne znam kojim bi se fizikalnim zakonima moglo opisati kao dobro rješenje. Ja bih prije rekao da ide na opciju povećanja problematike. Ako je ideja bila biti ekskluzivan, onda su uspjeli kao i mnogo puta do sada.

Ovo sa jako dugačkom ručkom je besmisleno iz razloga što rješava jedan problem (tangencijalnu grešku) ali stvara mnogo veći problem (ekstremno veliki moment inercije ručke). Taj vjerojatno ni ne može odsvirati ništa preko 10 kHz. Možda i to nekome odgovara, možda?? :)

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Re: most extreme turntables

Post by dioklecijan » 11 Aug 2011, 20:24

Prije neki dan sam slučajno naletio na site jedne meni nove firme sa vrlo uredno zamišljenim gramofonom. Bez puno mudrovanja, pametno, lijepo izgleda.


http://www.euroaudioteam.com/en/eat-for ... 00007.html
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Re: most extreme turntables

Post by sn » 12 Aug 2011, 01:16

..simply the best..
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Trebali bi i neki snimac da nabavimo, recimo ovako nesto;
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:sign http://www.vinylrecorder.com/


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nikolazec
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Re: most extreme turntables

Post by nikolazec » 12 Aug 2011, 06:09

Jos jedan lep Thorens ovo je 160 mk II lokacija Beograd

Image

Image
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Re: most extreme turntables

Post by dioklecijan » 12 Aug 2011, 07:52

Rekli smo da je mehanika samo dio priče pa evo nešto moje i ekstremno. Phono pretpojačalo, modificirani Xono. Trenutno je nešto izmjenjen (poboljšan :) ) i čeka skutijavanje, ali evo foto od prije cca godinu dana.

http://img.photobucket.com/albums/v65/d ... ono001.jpg


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Re: most extreme turntables

Post by RIVIERA » 12 Aug 2011, 08:46

dioklecijan wrote:Rekli smo da je mehanika samo dio priče pa evo nešto moje i ekstremno. Phono pretpojačalo, modificirani Xono. Trenutno je nešto izmjenjen (poboljšan :) ) i čeka skutijavanje, ali evo foto od prije cca godinu dana.

http://img.photobucket.com/albums/v65/d ... ono001.jpg
lepo, lepo, :D sta si mu to dodao posebne trafoe za napajanje svakog kanala i jedan izolacioni trafo pre njih?


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Re: most extreme turntables

Post by RIVIERA » 12 Aug 2011, 08:53

nikolazec wrote:Jos jedan lep Thorens ovo je 160 mk II lokacija Beograd

Image

Image
.
super izgleda :sign
a sta sste uradili sa motorom, to je najveci problem kod thorensa.
Mislim motor je super, neki mali svajcarski od svega 2W...
ali jako prenosi 50Hz vibaciju cak i preko subshasije.
Ja sam ga izmestio sa metalne sasije i pozicionirao na isto mesto
ali na drvrnom nosacu... sa tvrdim i mekim drvetom kao tamponom
vise nije bilo vibracija. :sign
.
Koliko se to cuje moze se jednostavno videti
kada se ploca vrti prstom priblizno istom brzinom
i kada se uljuci motor :oky
prost test ali sve govori, ja sam se iznenadio, a mislio sam da taj mali brum dolazi iz preampa,
sasvim slucajno sam to otkrio. Zvuci neverovatno ali istinito
:nic

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Re: most extreme turntables

Post by sn » 12 Aug 2011, 13:07

..evo neceg matorog, al spada u extreme.. odlican DJ setup :)
The Gaumont Chronophone System (1910)
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In 1903 French engineer Leon Gaumont was granted patents for loudspeaker systems to go with his sound on disc talking films, which used one of Berliner's Gramophones.
In 1910 Gaumont demonstrated his Chronophone system, which synchronised sound and film, at the Gaumont Palace in Paris. The compressed-air amplifier, whiuch he called the Eglephone, was just a part of the whole system. The volume was enough for an audience of 4000. Initially the longest moving picture that could be made with synchronised sound was only 200ft, due to the limited playing time of the Gramophone record. (Projection was at 16 frames per second) Gaumont surmounted this problem by having two gramophone platters; a deft operator could switch between them to give a more or less continuous soundtrack.

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Re: most extreme turntables

Post by nikolazec » 12 Aug 2011, 13:30

RIVIERA wrote:
nikolazec wrote:Jos jedan lep Thorens ovo je 160 mk II lokacija Beograd


Ja sam ga izmestio sa metalne sasije i pozicionirao na isto mesto
ali na drvrnom nosacu... sa tvrdim i mekim drvetom kao tamponom
vise nije bilo vibracija. :sign
.
:nic
ja sam napravio adapter da produzim osovinicu gde je tockic za brzine da bih motor dole odvojio tako sto sam savio 3 cevcice kroz koje prolaze srafovi od motora a tamo gde se dodituju cevcice i gornja ploca i gde se dodiruju sa kucistem motora tu su stavljene prstenaste gume. Najmanje moguce dodirivanje motora sa sasijom ali ja sam imao i mislim da ima jos uvek problem lezaja. U fantasticnom je stanju ali valjda je sveostalo mnogo dobro pa se on malo cuje cini mi se ali to samo kada stavis stetoskop na kucicste ovako se ne cuje rumble.No dobro nije bez mana ali mane ima svaki urejaja tako da mogu da kazem samo da svira stvarno super , jos kada stigne aluminujumski tanjir 6cm debeo i zameni ovaj to ce biti prica, Nije moje da pricam i za slike sam pitao druga da ih okacim i on se nekako slozio.
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nikolazec
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Re: most extreme turntables

Post by nikolazec » 12 Aug 2011, 13:33

sn wrote:..evo neceg matorog, al spada u extreme.. odlican DJ setup :)
The Gaumont Chronophone System (1910)
gaumont1b.jpg
[/quote]
Ovo mi se stvarno svidja :good
Ovo je sprava da cedejdzije crknu, da izvinite na izrazu (onako narodski), gde je njima tako daleka i lepa istorija :nic :stop
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Re: most extreme turntables

Post by RIVIERA » 12 Aug 2011, 17:41

ja sam pre par godina uradio na thorensu ovako nesto,
bez ikakvog kontakta sa mestom na gornjoj ploci na kojoj je bio.
relativno jednostavan zahvat.
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Re: most extreme turntables

Post by RIVIERA » 12 Aug 2011, 17:47

plint od jasena, a za povezivanje sam koristio dupli koaksijalni za svaki kanal
tako da nema kapaciteta shirma, i + i - idu kroz vruce krajeve.
shirmove sam povezao tako da je na na jednom kanalu chassis gramofona
a na drugom rucke
i to se sve spaja u jednu tacku kod ulaza u riaa pre-pre
a ne gnd rucke na gnd sasije pa tek onda dalje
ovaj sistem povezivanja moze se primeniti na svaki gramofon
:nic
mozda ce nekom biti od koristi?

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Re: most extreme turntables

Post by sn » 12 Aug 2011, 19:15

Meitner AT-2
Platterless Turntable

Image
For decades, the phonograph record has proven itself an amazing source of musical satisfaction and diversity of selection. As our understanding of turntables, tonearms and phono cartridges has advanced, so have the results achieved from those same recordings that we thought we had heard at their best.

The history of the record has been one of discovery; of musical satisfaction that increases with each new development in playback technology.

Even today we cannot be certain that we have unlocked all the treasures stored in the record groove.
The AT-2 Record Playing System features "platterless playback". The platter is replaced by a metal flywheel with knife-edge machinings to support the record beneath the label area. The playing surface of the record couples to air on top and bottom.

Turntable designers have made enhancements to platters and mats through the years. As far as they have evolved, however, platters and mats are left with one fundamental problem. The point at which the record contacts the mat or platter is an energy interface that vibrations, traveling at high velocities, must traverse. These vibrations will not be completely absorbed by the interfacing surface, and a significant portion of the energy will be "mirrored" back into the record. Because most of the energy is generated by the cartridge stylus, this is the area to receive most of the reflected energy. The result is a form of distortion read by the stylus and incorporated into the music signal.

Overlooked by most, the twelve inch diameter of the typical record makes it an increasingly ideal half-wave coupler of acoustic energy from the lower mid-range up, and improving as the frequency rises. The record naturally dissipates vibrations, particularly at the levels and frequencies that they occur, to air. Thus air becomes the absorbent "platter", the only substance that does not give energy back to the record. The reproduction of music is open, dynamic, remarkably natural. The AT-2 has become a collector's item.
http://www.museatex.com/at2.htm

300$ cnd

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Re: most extreme turntables

Post by nikolazec » 12 Aug 2011, 19:40

RIVIERA wrote:plint od jasena, a za povezivanje sam koristio dupli koaksijalni za svaki kanal
tako da nema kapaciteta shirma, i + i - idu kroz vruce krajeve.
shirmove sam povezao tako da je na na jednom kanalu chassis gramofona
a na drugom rucke
i to se sve spaja u jednu tacku kod ulaza u riaa pre-pre
a ne gnd rucke na gnd sasije pa tek onda dalje
ovaj sistem povezivanja moze se primeniti na svaki gramofon
:nic
mozda ce nekom biti od koristi?
ovo me interesuje da li moze nekako objasnjenje za laike ja sam drustvenjak pa mora polako i onako vise rukama objasnjavati pa i nacrtati, ako je off topic moze na mail ali mislim da je i drugima interesantno da nesto nauce.
Najbolje je kada nista ne znas

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