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