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The functional relationship between the drive belt, sub-platter, and motor pulley, can be seen through the glass platter on a Rega Planar 3.. There are three main types of phonograph turntable drives being manufactured today: the belt-drive, idler-wheel and direct-drive systems; the names are based upon the type of coupling used between the platter of the turntable and the motor.
In a direct-drive turntable the motor is located directly under the center of the platter and is connected to the platter directly. It is a significant advancement over older belt-drive turntables for turntablism, since they have a slower start-up time and torque, and are prone to wear-and-tear and breakage, [5] as the belt would break from backspinning or scratching. [6]
Early belt-drive turntables were unsuitable for turntablism, since they had a slow start-up time, and they were prone to wear-and-tear and breakage, [9] as the belt would break from backspinning or scratching. [10] The first direct-drive turntable was invented by Shuichi Obata, an engineer at Matsushita (now Panasonic), [11] based in Osaka ...
Most users remove the rubber turntable mat and replace it with a slipmat for mixing. However, without the rubber mat, the platter is prone to resonance at 250 Hz when used near a large club sound system. The drive system designed by Matsushita is direct-drive rather than the more commonly found belt-drive type, a less expensive design. The ...
The open belt drive has parallel shafts rotating in the same direction, whereas the cross-belt drive also bears parallel shafts but rotate in opposite direction. The former is far more common, and the latter not appropriate for timing and standard V-belts unless there is a twist between each pulley so that the pulleys only contact the same belt ...
The record deck is single speed – it runs at 33 rpm, and the user must physically remove the platter to reposition the drive belt to play 45 rpm records. [ 11 ] The two major changes to the Planar 3 during its life were firstly the inclusion of the higher quality Rega RB300 tonearm in the 1980s, and the change to a new AC synchronous motor ...
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Four wool spinning machines driven by belts from an overhead lineshaft (Leipzig, Germany, circa 1925) The belt drives of the Mueller Mill, model and reality, in motionA line shaft is a power-driven rotating shaft for power transmission that was used extensively from the Industrial Revolution until the early 20th century.
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