Features
Friction
free velocity-sensing electronic shut-off
Precision
tone arm TP 28 ES
Radius
dependent compensation of the skating force
Clean and
uncoloured sound
The Thorens
TD 280 turntable is driven by a two-phase 24-pole synnchronous motor. Its
vibration level is so low that it made the use of a suspended chassis
unnecessary - a feature otherwise typical for Thorens turntables - and yet the
weighted rumble exceeds 70 dB.
The design
of the TD 280 turntable makes it largely insensitive to shocks, even under
adverse conditions such as swinging floors in old houses.
The Thorens
belt drive.
Every
electric motor produces a certain amount of vibrations. When the motor drives
the turntable by means of a rubber belt, the natural elasticity of the belt
prevents most motor vibrations from reaching the platter and, therefore, the
pick-up stylus. In many decades of continuous development. Thorens has reduced
the very few disadvantages of belt drive to an absolute minimum and has brought
it to a level of technical perfection which is not approached by any other
system known today.
The main
objectives of Thorens engineers remain unchanged: robustness, reliability and
life-time maintenance of the original performance specification.
The Thorens
Suspension.
Every
turntable must be damped by a suspension system to prevent the sensitive
pick-up from environmental vibration and from acoustic feedback. The suspension elements must have a specific
damping factor.
On the TD
280 turntable, the springs with their damping elements are integrated into the
feet of the chassis.
The whole
mass of the complete turntable works as part of an efficient filter system
against all undesired resonances.
Friction-free
velocity-sensing electronic shutt-off.
As the
lead-out grooves of records show a higher pitch - i.e. the grooves are further
apart from one another - the tone arm motional
speed increasas towards the center of the platter. An electronic circuit
picks up the signal produced by the change in the tone arm velocity and
commands the motor to stop. 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 tone arm is
moved by hand over the disc surface.
Specifications
TD 280
Drive
System: 1 step belt drive
Motor: Low voltage 24 pole synchronous motor
Speeds: 33⅓ and 45 RPM, electronic speed selection
Motor Speed
Control: 2 phase generator for
synchronous control
Turntable
Platter: 1,2 kg zinc alloy, dynamically
balanced
Platter
Diameter: 300 mm (12")
Wow and
Flutter (DIN 45507): ≤ 0,045%
Rumble
unweighted (DIN 45539): > 48 dB
Rumble
weighted (DIN 455539): > 70 dB
Power
Requirements: 17 V max. 140 mA
Mains
Voltage: may be connected to any line
voltage and frequency using the appropiate Thorens AC adapter
Power
Consumption: 5 Watt
Dimensions
(W x H x D): 440 x 135 x 355 mm (cover
closed)
Height with
cover open: 430 mm
Weight: 7,5 kg
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