Thorens TP 28 ES

 TP 28 ES tone arm.

For optimum in tracking abillity, a tone arm must have a low bearing friction, hence the use of pivot bearings on the TP 28 ES. The mass of every tone arm forms a resonent system together with the compliance of the pick-up cartridge. Such tone arm mass must thus be carefully selected in view to keep the resonance frequency of the system within definite limits, i.e. between 7 and 12 Hz as taught by experience.

These limits are respected by the Thorens TP 28 ES tone arm in combination with nearly all available cartridges.

 The TP 28 ES 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 28 ES 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:  by calibrated spring

Tracking Force:  Graduation scale on counterweight

Bearing Friction:  ≤ 0,25 mN  (25mp) in both planes

Cartridge Mounting:  Standard ½"

Capacitance of cable:  150 pF