Tornamesas

[hectori 761]

hace 35 minutos, Patolinsky dijo:

He visto varias tornas con dos brazos y me parece que hasta 3. Para que sirve más de un brazo? Para tener distintas cápsulas o tiene algún otro uso?

Para probar distintas capsulas y brazos.... en realidad, es mas fácil tener una base "Plug And Play" que tener 4 brazos con las capsulas, si parece que hasta calzar el disco ahi es un trabajo milimétrico... sacarlo sin romper ninguna aguja es como partido de jenga... ademas, ese le puso el brazo de limpieza también.

[hectori 761]

1 hour ago, jpaez12 dijo:

Pareciera que si me descuidara, me rebanaría un par de dedos!! jajaj

Igual, viendo la cantidad de CDs y Cero Vinilos que aparecen en la foto, yo creo que el pobre tipo sigue comprando brazos y capsulas a ver si alguna le lee un CD, no queda otra... 

[Alberto 244]

Tornamesa Audio Union modelo Helix 1 diseñada por Mark Dörman quién encabeza un numeroso equipo de especialistas. El mismo que diseñó la Continumm Audio Lab Caliburn, el brazo Cobra y el stand Castellon.
Brazo Schröder CB (captive Bearing) diseñado por Frank Schröder

http://www.audio-union.com/Helix.php

[Mr_oD 3.303]

Si alguno quiere una Micro Seiki RX-5000 , acá una en ebay http://www.ebay.com/itm/Micro-seiki-RX-5000-Turntable-without-Tonearm-for-MC-Cartridge-/252765394129?hash=item3ad9fdd4d1:g:k9gAAOSwOgdYnpek  a 7 lukitas y media.

Servirá este bracito?? luca y media más..

Editado February 13, 2017 at 01:13 por Mr_oD

[Alberto 244]

La Platine Verdier.

Learning to levitate

TECHNOLOGICAL progress ensures that the boundaries of the high en are constantly being redefined, but after a taste of gourmet vinyl hardware, one might well believe that analogue has attained its zenith. Try for size the very unorthodox La Platine turntable, from France's J.C.Verdier.

Ah, but no complex techno-gadgetry is involved here; La Platine uses the most rudimentary of scientific principles to minimize friction, that bane of civilization. To banish friction, the bottom half of the turntable's platter is supplemented with a permanent magnet. This magnet is "supported" but another permanent magnet attached to the plinth, with the poles of both magnets facing each other. And as you know, like poles repel, exactly the same principle applied to those futuristic Magnet trains. Voilà!

A central spindle keeps the plinth and platter in alignment. The "levitation" platter ensures ultra smooth rotation. An external DC motor, mounted away from the turntables unit, turns the platter via a fine nylon thread (provided generously by the manufacturer). Speed freaks can do either 45 or 33 1/3 rpm on the La Platine. Just slip on your fave LP.

 

 

http://www.jcverdier.com/ADSL/platineV.html

[hectori 761]

Una foto histórica....

 

[Alberto 244]

hace 17 horas, hectori dijo:

Una foto histórica....

 

Buena Héctor. Qué hermosos brazos Ortofon, a proposito

photo of EMI's Mark III Disc Defect Detectors (DDD) in action.
Using the backbone of the Garrard 301 turntable, the Mk III DDD played vinyl at 33.3 rpm (the Mk IV, implemented in 1974/5, played at 78rpm). It was developed at EMI's Central Research Laboratories and introduced in 1965.
It worked on the premise that most defects, like pops, crackles and snaps, have a slow attack and sharp decay, whereas music normally has a sharp attack and slow decay. Thus when the record was rotated backwards the sharp decay of the defect could be electronically detected.
Hence, as you can see, the tonearms are set up to play backwards, from the centre out.

http://forums.stevehoffman.tv/threads/emi-hayes-production-plant.323099/page-8

[maguilarp 1.488]

Por aquí otra a la colección: 

http://www.whathifi.com/news/pro-ject-reveals-limited-edition-1964-beatles-turntable?utm_content=bufferff165&utm_medium=social&utm_source=facebook.com&utm_campaign=buffer

[maguilarp 1.488]

 

 

[Alberto 244]

Michell Gyrodec, pariente lejano de alguna  premisas de diseño de la Transcriptors Hydraulic Reference (David Gammon), por ejemplo agregar masa en el perímetro exterior del plato para preservar la inercia a modo de volante (de inercia), manteniendo la velocidad estable, con menor esfuerzo del motor:

versión SE

plato de una Transcriptors H.R.

todo un espectáculo verla funcionar.

 

Editado February 18, 2017 at 13:16 por Alberto

[Alberto 244]

Wilson Benesch Circle 25

"A turntable is purely a system of measurement, designed to allow a ~10nm (0.000001mm) cantilever tip to trace a ~50µm (0.05mm) groove in a piece of vinyl. By considering the microscopic level, it is then easy to appreciate the beauty of the Circle 25 design. What appears a simple design is in fact a complex and highly engineered analogue replay system".

http://wilson-benesch.com/products/circle-25-turntable.html

 

[hectori 761]

Sharp RP-117

Con toda la tecnología...

[Alberto 244]

Luxman PD555

Drive system :	belt
Motor :	Brushless DC-Servo
Main platter :	diecast aluminium
	30cm / 8,5kg
Speeds :	33 1/3 / 45 / 78rpm
S/N ratio :	> 82dB
	(Thorens Messkopler)
Wow & flutter :	< 0,03%
Inertia moment :	1,2t / cm2
Torque :
Temperature drift :
Turning accuracy :
Pitch control :	± 2,5% (each speed separately)
Full speed ahead :	< 4 seconds (33 1/3rpm)
Full stop :	< 18 seconds (33 1/3 rm)
Arm bases :	2 detachable, zinc diecast
Tonearm switch :	T1 & T2, interchangeable
PC :	20W (PD555)
	70W (VS555)
Dimensions :	66,4 x 39,2 x 17,5cm (PD555)
	10,2 x 51,2 x 15,4cm (VS555)
Weight :	26,5kg (PD555)
	7,0kg (VS555)
List price :	7500DM (PD555 + VS555, DE'80)
	330,000¥ (PD555, JP'80)
	120,000¥ (VS555, JP'80)

 

 

[Alberto 244]

Sota Millennia:

The all-new open-chassis MILLENNIA Vacuum Turntable System is SOTA’s latest assault on the State-Of-The-Art in LP playback equipment. Like the critically acclaimed SOTA COSMOS, the MILLENNIA utilizes an ultra-rigid, unified sub-assembly utilizing a critically damped one piece sub-chassis, milled from a one inch thick solid aluminum plate. Unlike the COSMOS and previous SOTA top-of-the-line turntable models however, the MILLENNIA incorporates a spring-less, hanging four-point balanced-mass visco-elastic suspension system. The multi-layer suspension utilizes a variety of materials including Axidynea®, a unique energy absorbing visco-elastic polymer, to provide excellent outside energy rejection at critical midrange frequencies.

The MILLENNIA uses SOTA’s internally damped, multi-layer 15-pound vacuum platter system with the ultra Vinyl Format platter mat. It incorporates SOTA’s inverted bearing assembly design, utilizing a polished sapphire thrust plate with zirconium bearing. The SOTA self-sensing record-hold-down system uses a high-tech pneumatic sensing circuit to provide vacuum clamping and maintenance of exact low-pressure vacuum hold-down. The MILLENNIA’s synthesized sine-wave drive (with electronic speed control and speed change) 24 pole A/C Stepper Motor drive system is housed in a separate, high-mass stand alone cabinet and is powered by SOTA’s Electronic Flywheel power supply. Additional damping has been added to the cabinet as well as adjustable feet for fine tuning.

http://www.sotaturntables.com/engineering.htm

[hectori 761]

Una rara... Yamamura Churchill...

[lag 506]

hace 36 minutos, hectori dijo:

Una rara... Yamamura Churchill...

Para el webeo , eso es para el destartraje bucal , clarito se se ve el asiento de 5 aspas del paciente y la maquina pulidora de chocleros con su buena galleta 

[Bruckner 118]

hace 13 minutos, lag dijo:

Para el webeo , eso es para el destartraje bucal , clarito se se ve el asiento de 5 aspas del paciente y la maquina pulidora de chocleros con su buena galleta 

mish ¡¡

 

pensé que don Lag no frecuentaba el post de tornamesas.

 

 

[lag 506]

hace 29 minutos, Bruckner dijo:

mish ¡¡

 

pensé que don Lag no frecuentaba el post de tornamesas.

 

 

Desde que escuché la tuya no puedo dejarlo pasar 

[Bruckner 118]

hace 1 minuto, lag dijo:

Desde que escuché la tuya no puedo dejarlo pasar 

 Pero si has escuchado varias tornas wenas¡

un saludo estimado¡¡

[lag 506]

hace 2 minutos, Bruckner dijo:

 Pero si has escuchado varias tornas wenas¡

un saludo estimado¡¡

Sip pero el resultado final es el que importa ..