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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





Thorens TP 21

 THORENS TP 21 Tone arm
For optimum in tracking ability it is not sufficient that a tone arm has a low bearing friction. It is much more important that it has a low effective mass, because high mass prevents the stylus from following the imperfections (warp or ripple) of the record as it should do.
To overcome hgh effective mass one can increase the stylus force, but this results in excessive record wear. 
  
In addition, the TP 21 is a straight arm and not S-shaped. The necessary offset angle is independent of the arm shape. A special surface treatment of the tone arm tube absorbs all undesirable resonances of the tone arm.
It will optimise ideally with almost every cartridge.

Specifications TP 21 tone arm
Effective Length:  232 mm
Effective Mass:  12,5 g
Stylus Overhang:  16,4 mm adjustable
Offset single:  23°
Lateral Tracking Error:  ≤ 0,18°/cm of radius
Skating-compensation:  1 or 2 weights on nylon thread
Tracking Force:  Graduation scale on counterweight
Bearing Friction:  ≤ 0,20 mN  (20mp) in both planes
Cartridge Mounting:  Standard ½"

Capacitance of cable:  150 pF
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