What is stereo?

There are now two system of high fidelity, monophonic (monaural) and stereophonic. Monophonic is a system that starts from one microphone and is fed through a single high fidelity set. Stereophonic is a double system. Two separate microphones are placed at different sides of the orchestra and two different systems are used to keep the two signals or channels separated. Two separate speakers are used, placed on different sides of you room. Stereo is much like 3-D photography, two slightly different sound reach your ears giving you a new dimension in sound.

H.H. Scott '59


Semi-professional Transcription Turntable
Without doubt the best transcription turntable on the market
Servo controlled electronic belt-drive system with DC motor - a THORENS design
Load-correcting automatic pitch control (APC)
ISOTRACK TP16 Mk III tonearm with very low effective mass
Low resonance tonearm tube utilising "split wave technology"
Friction-free velocity-sensing electronic shut-off
Separate motor for tonearm lift operation
Three speeds 33, 45 and 78 rpm
Precision craftsmanship to meet the highest professional standards

The TD 126 Mk III by Thorens  is "the" transcription turntable for discriminating music lovers and professional users. It is the product of 95 years experience in the construction of musical instruments allied to the mastering of the most advanced technilogy in the fields of fine mechanics and electronics. The main objectives of Thorens engineers remain unchanged robustness, reliability and life-time maintenance of the original performance specification.
In their constant battle against rumble, Thorens designed a servo controlled electronic belt-drive to associate with unique floating suspension system.

Every turntable must be damped by a suspension system to prevent the sensitive pick-up from environmental vibration and from acoustic feedback. If the springs are placed between motor and turntable platter, they then fulfill the additional requirement of decoupling motor vibrations almost completely from the turntable and the pick-up system.

The turntable platter and the tonearm are both mounted on a secondary chassis carrying the motor. Thanks to their exclusive design Thorens Transcription turntables claim rumble figures equalled by no other drive system. 

For optimum in tracking ability it is not sufficient that a tone arm has low bearing friction. It is much more important that is has a low effective mass, because high mass prevents the stylus from following the imperfections (waro or ripple) of the record as it should do. To overcome high effective mass one can increase the stylus force, but this results in excessive record wear. Thorens has solved the effective mass problem by removing any unnecessary weight from the tone arm.
The head shell is reduced to a shielding device, and the detachable connector is placed close to the pivots where it has negligible influence on the effective mass. In addition, Thorens Isotrack is a straight arm and not S-shaped. The necessary offset angle is independent of the arm shape.
Typical arms have effective masses of around 15 grammes.
The Thorens Isotrack is half this figure, allowing it to track at the lowest possible stylus pressures.

A special surface treatment of the tone arm tube - "split wave technology" - absorbs all undesirable resonances of tone arm.

Friction-free velocity-sensing electronic shut-off
As the lead-out grooves of records show a higher pitch - i.e. the grooves are further apart from one another - the tonearm motional speed increases towards the center of the platter. An electronic circuit picjs up the signal produced by the change in the tonearm velocity and commands the motor to stop and the tonearm to raise. The precision associated with Thorens turntables is further emphasised here, since the activation of the auto stop process is not position  sensitive, but fully electronic and friction-free.
The Thorens automatic stop system also enables the operator to cue with studio precision at any point on a disc, even at the very centre.

Another circuit prevents the activation of the auto stop process when the tonearm is moved by hand over the disc surface. A separate motor is using for tonearm lift operation.
Drive System:  1 step belt-drive
Motor:  DC Motor with 72 pole tachogenerator
Speed:   33, 45 and 78 rpm electronic speed selection
Motor Speed Control:  Electronic regulation with load correcting automatic pitch control
Pitch Control:  ±6% illuminated stroboscope
Turntable Platter:   3,2 kg zinc alloy dynamically balanced
Platter Diameter:  30 cm (12")
Wow & Flutter:  Less than 0,035% according to DIN 45507
Rumble Unweighted:  -52 dB according to DIN 45539
Rumble Weighted:  -72 dB according to DIN 45539
Rumble Measured with the THORENS Rumble Measuring Device:
Rumble Unweighted :  -65 dB according to DIN 45539
Rumble Weighted :  -78 dB according to DIN 45539

Tonearm TP 16 Mk III
Cartridge Wand TP 63
Tonearm Lenght:  230 mm (9")
Effective Mass:  7,5 g
Stylus Overhang:  14,4 mm
Offset Angle:  22⁰
Lateral Tracking Error:  Less than  0,18⁰/cm radius
Skating Compensation:  Magnetic force without friction
Stylus Pressure Appliance:  by spring
Bearing Friction:  Less than  0,15 mN (15 mp) in bith planes
Cartridge Fitting:  Standard ½" centres
Capacitance of Cable:  190 pF ± 10%

Auto Stop:  Electronic velocity sensor
Mains Voltage:  117/220 V, 50/60 Hz
Power Consumption:  11 Watt
(W x D):  505 x 395 mm
Height with cover closed :  170 mm
Height with cover open :  460 mm
Depth with cover open :  395 mm

Weight:  15 kg, (33 lbs)

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