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Tornamesas


hectori

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On 16/1/2017 at 18:24, hectori dijo:

Dentro de los modelo portátiles la Emerson Wondregram, es una de mis favoritas... con la cantidad de años que tiene, insuperable.

f7ac0716dcaea0cb011343eb6a3adc0f.jpg

 

Yo tengo una de esas!!!! No en ese estado pero es la misma!

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1 hour ago, Felipe_gong dijo:

Esteticamente es la raja, ¿ qué marca es?

¿es talla cierto? :lol:

5% digital: NAD CDP==> DAC: PSAudio D-Link IV (Cullen Mods) ==> Edison One (Anderson) Previo ==> Anderson Power Ampli ==> Cajas Ohm Model L (Cables Supra).

95% análogo: REVOX A77/Lenco L75 tornamesa==> (Cables Supra).

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Un resumen de las características de las SP10, SP10MK2 y SP10MK3 para que vean donde quedó esta tecnología y podamos comparar cuando aparezcan las de la nueva versión, con la MK3. La MK3 fue simplemente espectacular, completamente escapada de la MK2. (la MK1 completamente fuera en esta competencia, siendo servo y las otras quartz, dentro de muchas diferencias sustantivas):

Description

The SP10 started life in 1970 as a servo-controlled motor unit designed for studio use.

In 1975 the much improved SP10 mkII (1975-81) was introduced with Quartz-locked speed control and external power supply; this is the version which found its way into many studios, replacing ageing Garrard 401s and the like.

The unit was also made available to the public as the high-end SL1000 mkII system which included the SH-10B3 Obsidian base and EPA100, and later the EPA500 tonearm.

For serious professional use the SP10 mkIIP version (as used by the BBC) provided full, wired remote control of start/stop and speed functions and added a stepped pitch control.

The mkIIA (1983-87) was a minor update to the original mkII, with simplified circuitry.

The final version was the SP10 mk3 (1981-87) - this behemoth sported a 10kg platter and sophisticated power supply with digital readout of pitch, and an even heavier SH10B7 Obsidian plinth (also made available for the mkII).

The mk3 version is rarely seen outside of Japan and commands very high prices on the used market.

Power supplies for the mk2 versions of the deck are external. The correct versions for each model are as follows: mkII - SH10-E, mkIIa - SH-10EA, mkIIp - SH-10EP

Technics all new SP-10 mk2 represents a standard of accuracy and quality in disc reproduction that has never been attained before; this truly outstanding three speed package unquestionably constitutes a new reference against which professional systems will have to be measured for years to come.

Just glance at some of these amazing features: almost total absence of speed drift; immeasurably small wow and flutter; extreme quietness; enormously high torque; and practically instantaneous starting and stopping.

Other features include modular circuit construction for ease of servicing and a specially designed rubber mat on the underside of the platter for vibration damping.

Specifications

SP-10 mk1

Platter: 300mm 6lb aluminium diecast

Motor: 20-poles, 60-slots, ultra low speed electronic commutator motor (15V, 85mA)

Speeds: 33 and 45rpm

Speed change method: electrical change

Fine speed control: +-2% by variable resistor

Wow and flutter: less than 0.03% WRMS

Rumble: better than -60dB

Build up time: within 1/2 rotation at 33 rpm

Dimensions: 14" X 14" x 4"

Weight: 20lb

SP-10 mk2

Motor: brushless DC motor, electronic rectification, quartz-controlled phase-locked servo circuit

Plater: 320mm 2.9kg aluminium

Speeds: 33, 45 and 78rpm

Pitch control: 10% (mk2P)

Starting torque: 6kg-cm

Build up time: 0.25s to 33rpm

Braking time: 0.3s from 33rpm

Speed fluctuation by load changes: 0% within 5kg-cm

Wow and flutter: 0.025% WRMS (JIS C5521)

Rumble: -73dB (DIN 45539B)

Dimensions: 102.5 x 368.5 x 368.5mm

Weight: 9.5kg

SP-10 mk2A

Motor: brushless DC motor, electronic rectification, quartz-controlled phase-locked servo circuit

Plater: 320mm 2.9kg aluminium

Speeds: 33, 45 and 78rpm

Starting torque: 6kg-cm

Build up time: 0.25s to 33rpm

Braking time: 0.3s from 33rpm

Speed fluctuation by load changes: 0% within 5kg-cm

Wow and flutter: 0.02% WRMS (JIS C5521)

Rumble: -86dB (IEC 98A weighted)

Dimensions: 102.5 x 368.5 x 368.5mm

Weight: 9.5kg

SP-10 mk3

Motor: brushless DC motor, electronic rectification, quartz-controlled phase-locked servo circuit

Plater: 320mm, 10kg copper/aluminium

Speeds: 33, 45 and 78rpm

Pitch control: 20%

Starting torque: 16kg-cm

Build up time: 0.25s to 33rpm

Braking time: 0.3s from 33rpm

Speed fluctuation by load changes: 0% within 10kg-cm

Wow and flutter: 0.015% WRMS (JIS C5521)

Rumble: -92dB (IEC 98A weighted)

Dimensions: 369 x 113 x 369mm

Weight: 18kg

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  • 2 weeks later...
hace 7 horas, relayer dijo:

A todo esto, de las Technics accesibles en Chilito, ¿cual es la mas cercana en calidad a la clásica SL1200? ¿la 1300, la 1400, la 1500, 1600, 1800, etc?

Saludos

Ninguna, solo la 1300mk2 podría ser pero es full automática. las otras son mucho mas sencillas y no tienen ni la pesada base de goma ni control de altura del brazo. La 1800mk2 se parece algo mas, pero se nota que es una especie de versión abaratada.

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  • 2 weeks later...

Michell Orbe, la hermana mayor de la Gyro dec. Ambas herederas directas de los diseños de David Gammon, quién contrató a Michell Engineering para producir parte de sus tornamesas. Luego produjeron sus propios modelos, pero completamente basados en el desarrollo de la legendaria Hydraulic Reference de Trancriptors.

Orbe-Image.png

 

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  • 4 weeks later...

Tornamesa Exclasive P3a (ojo, no la P3). Este es un tremendo ejemplo del desarrollo de la tecnología de tornamesas que quedó trunco con el cambio de la industria a digital. Si hay, al menos en los números, ejemplos sorprendenetes, esta está en los primeros lugares: Señal/Ruido = 95 db. La Technics SP10 MK3 llega a 92db ( y la nueva SP10R) y la Denon DP100 a 90db. Esta medida no garantiza la musicalidad como la coherencia y continuidad de la velocidad, pero si es sinónimo de ingeniería y fabricación sobresaliente.

The

Exclusive P3a  
650,000yen(around the 1983 time)
 
Description
 
The stereo player system which aimed at the more nearly high-definition play by adding and adding a modification to an arm or a detail based on Exclusive P3.

The scheme which controls DD motor of the linear torque scheme of a slotless and a coreless structure by Quartz PLL is adopted as a phone motor and a bearing structure. Furthermore, by the conventional measuring method, the impossible rotation performance of 0.001% of less than rotation unevenness 0.003% and a rotational frequency precision is realized by adopting the bearing structure of a SHR (Stable hanging rotor) scheme where the centroid of the axis-of-revolution part was set up low.
A SHR scheme is what designed the bearing structure to the inverted structure of the conventional scheme, an inertia arises in a bearing part during a rotation, and side pressure has stopped applying to an axis probably by having brought the supporting point close to a centroid and having changed the conventional bearing part into the rotation side as for it. And for the preventing with ガタ, the path clearance of bearing occurs for a minimum and the inertia of a turntable is set to sufficient torque also to the load intensity of the cartridge added to the perimeter of a turntable.

The high torque motor of the dual rotor structure using an anisotropy ferrite magnet with a strong attraction of magnet has realized about the same high torque (10 kg-cm) as a record cutting unit.
Furthermore, adoption and the interval of the servo circuitry which was excellent in the turntable of inertial-mass 700 kg-cm2 or the transient realized the outstanding startup property (it is a constant-speed rotation in 0.3 second after switchpoint-on) and load characteristics-proof (it is 1.5kg by stylus-force conversion), and have acquired the rotation property that the stable precision is high.

In addition to the weight saving of a tone arm, the mass concentration scheme and oil dumping adjustment mechanism which concentrated the mass on the axis of revolution are carried in the tone arm part.
By adding braking by reliable silicon oil on an arm axis, the reduction of massive [ low-pass ] and cross modulation distortion is realized. Moreover, it is also possible to be able to control the amount of braking of oil dumping according to the property of a cartridge, and to turn OFF dumping.

The tone arm made from a DRA& alumina ceramics which investigated absent-resonance-ization is adopted as a tone arm.
The oscillation characteristic of the tone arm which worsens a tone quality is grasped making full use of computer analysis technology, such as an FFT analyzer, and the new organization DRA (Dynamic Resonance Absorber) developed based on this data is carried. DRA(s) are a damper with moderate spring nature, and a thing equipped with the subvibration object which consisted of waits, and have the structure of absorbing this, by giving the opposite oscillation to a vibration of an arm. According to this oscillating neutralizing influence, the needle point prevented taking up excessive components other than a sound track, and has obtained a more exact play sound.
The alumina ceramics is adopted as an arm material. comparing this material with conventional aluminum -- a ratio -- rigidity is reducing the あり and the vibration about 3 times.

The quick stop organization which used together the motor, the electronic formula brake which applies the power of a reverse rotation, and the mechanical brake which stops a rotation of a rotor using a plunger by work of an electronic circuitry is carried.

The motor part and the tone arm part are fixed to the base with a weight of 12kg which laminated the barium sulfate of aluminum and high-density material.
Furthermore, the base was completely floated from the cabinet and the vibration proof structure of the coaxial suspension scheme which intercepts the oscillation from the sound pressure and the floor from a speaker is adopted.

In order to make a high howling margin possible, the insulator of the Mie structure is adopted.
Special rubber is used, in order to support a 25kg main unit with the oil dumping type waveguide-plunger structure using a 62mm spring and also to make the surging of a spring absorb.
Moreover, since the resonant frequency of the insulator is set as 5Hz or less lower than the resonant frequency of a tone arm, the howling margin with high vibration proof structure and interval of a coaxial suspension has been obtained.

It is the design which combined the cabinet of native wood eye finish of the Brazi LeAnn Lowe's wood, and the book jacket excellent in the prevention from a howling made from tempered glass with the cabinet.

The very-thick power cord using high oxygen free high conductivity copper of the conductometric was adopted as the power cord, the loss in the wire rod was reduced, and nonlinear distortion is improved sharply.
Furthermore, high-quality sound-ization is attained more by performing a clear polar window.

 
 
The
Tone
A
The A
Oxygen-free-high-conductivity-copper
 
Rating of a mode
Form Cartridgeless player system
<Phone motor part>
Motor synopsis Linear torque DC hall motor
Bearing structure SHR scheme
Drive system Direct-drive
Control system Quartz PLL
Rotational frequency 33 1 / 3 or 45rpm
Rotational frequency precision 0.001%
Rotation unevenness 0.003% (WRMS, the FG method)
0.015% (WRMS, the Japanese-Industrial-Standard record method)
S/N 95dB(DIN-B)
Starting torque 10kg-cm
Opposite load characteristics With no rotational frequency transition (arm 1,000 duty) to 1.5kg of stylus forces
Startup property 0.3 second (33 1/3rpm o'clock)
Turntable carrying out 32cm aluminum shaving appearance (weight of 2.8kg)
Inertial mass 700kg-cm2 (it is an included about a rubber sheet)
<Tone arm part (EA-03)>
Form Dynamic balance type twin pipe exchange system
a straight-with integrated head shell pipe -- and
S character type universal pipe
Arm effective length 282mm
Overhang 12.5mm
Tracking error + 1.85 degrees-1.10 degrees
Stylus-force adjustable range 0-3g (0.1g step)
Conformity cartridge self-weight 2.6g-24g (straight)
6g-38g (S character head shell 込)
(Wait exchange system)
Height adjustable range + 8mm--4mm
Output code With a low-impedance gilding plug (oxygen-free-high-conductivity-copper line)
Base attachment Collet chuck scheme
Braking part The low-pass brake style by silicon oil
(Dumping fator variable scheme)
An attached organization Direct lever scheme anti skating
Silicon oil dumping scheme arm lifter
DRA (dynamic Resonance absorber)
<Main-unit part>
Cabinet Brazi LeAnn Lowe's wood native wood eye
Hood 5mm thickness smoked tempered glass
Hinge A free stop, a removable
Insulator Mie braking by a coil spring, oil, and rubber
Base material A barium sulfate (15mm), an aluminum alloy (10mm)
A brake with a quick stop An electron, a mechanism combined use brake
Manual operation button A feather touch, the soft push SW
<Others>
Power source AC100V, 50Hz/60Hz
Power consumption 10W
Dimensions Width 600x height 278x depth of 445mm
Weight 47kg
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  • 2 weeks later...

 

Buenas! soy Francisco y estoy recién metiéndome en este fascinante mundo del HiFi. Recibí de regalo este equipo Marantz antiguo que está en óptimas condiciones, compuesto de un preamplificador SC 500 y un stereo power amplifier SM500dc + unos parlantes Technics vintage (no sé el modelo). Alguna recomendación de tornamesa de entrada BBB para completar el equipo? Estaba mirando una Planar Rega 2 pero acepto todo tipo de sugerencias de gente mas entendida.

Me falta algo más para dejar andando el equipo? necesito otro pre phono o estoy OK con los aparatos que tengo? Alguna opinión respecto del equipo antiguo?

 

Muy agradecido con su ayuda y les pido disculpas de antemano por la ignorancia jaja. Slds!! 

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On 7/11/2017 at 12:06, fmongep dijo:

Muy agradecido con su ayuda y les pido disculpas de antemano por la ignorancia jaja. Slds!! 

Hola,

leiste los posteos antiguos?..hay muchos como tu q han orientado en profundidad..pegale unas leidas, y despues aglun detalle puntual abres tu post y lo preguntas... varios te responderan gustosos ;)

slds.

---------

Atte,

AlkcA.

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  • 3 weeks later...
On 8/11/2017 at 14:00, Patolinsky dijo:

Thorens Td 150 Cecilietta

https://articulo.mercadolibre.cl/MLC-449094284-remato-tornamesa-thorens-td-150-cecilietta-_JM

 

Bonito el bicho me pero me tinca un cacho.

Le había echado un ojo también! Tiene bonita presentacion...

 

lGual me causa extrañeza la respuesta que dice "preferiría no moverla mucho"....

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hace 32 minutos, Patolinsky dijo:

A mi me frenó que venía con pre incoporado, salida de parlantes y control de volumen y al parece no se podía saltar el pre. Pocaza info encontré en la web por lo que me sonaba a cacho.

Por lo que aparece en sus preguntas, sí se puede. Y esa modificación fue hecha por él, no es natural de la tornamesa, por lo que entendí.

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