The Thorens 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. Here is shown the two ways Thorens have done this.
The turntable platter and the tone arm are both mounted on a secondary chassis which is resiliently suspended from the main chassis carrying the motor.
Used on TD-160/160S/126 among others.
The turntable platter and the tone arm are both mounted on a secondary chassis which is suspended from the main chassis carrying the motor by means of 4 "ortho-inertial" suspension elements for optimum damping in all direction.
Used on the TD-110/115 among others.
The THORENS-acceleration clutch
A particular development is the THORENS-acceleration clutch, which prevents the belt from stretching, thus reducing the starting time and eliminating chassis vibration. Because of the high performance required by descerning listeners, THORENS has decided to retain its own unique belt drive system as long as no better drive system is developed in THORENS laboratories or elsewhere.
Thorens information folder - Warum werden THORENS-Plattenspieler nach vie vor als Weltspitzenklasse bezeichnet? - available as photocopy (dated 23/03/79 - 8 pages - German Language) in pay mode. Ask for more info.