Thorens TD-907 Turntable
THE ULTIMATE SUB-CHASSIS TURNTABLE
The sub-chassis is made of triCom, an aluminium/POM composite characterized by excellent damping properties and high stiffness. Its weight has been optimized for high performance. To reduce vibrations, the synchronous AC motor is mounted directly onto the damped sub-chassis. It drives the sub-platter via a machined precision belt.
The sub-chassis is suspended by means of three conical springs which can be adjusted from above in order to achieve uniform tension. The bearing is made of sintered bronze with a Teflon thrust pad and optimized for smooth running. The steel axle supported therein provides very low, constant friction and thus presents a uniform load to the motor. Two of the turntable’s three feet can be leveled from above, which facilitates setup.
Depending on the model, different damping architectures, tonearm boards and platters are used. The design can accommodate a wide variety of 9" and 10" tonearms also from third-party manufacturers.
Newly developed, ten-step adjustable pneumatic damping architecture
A conical polypropylene membrane under the platter bearing is decoupled from the triCom base via a visco/propylene layer. The air chamber thus formed under the membrane vents into ten apertures in the base plate which can be opened or closed with a slide.
Turntable feet with triCom and viscose foam insert, adjustable
The tonearm board is also made of triCom and can be cut for almost any 9" and 10" tonearm at the factory.
The polished aluminium platter features an acrylic insert that acts as a damping pad for the grooved area of the record.