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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.
An idler-wheel may be used as part of a friction drive mechanism. For example, to connect a metal motor shaft to a metal platter without gear noise, early phonographs used a rubber idler wheel. Likewise, the pinch roller in a magnetic tape transport is a type of idler wheel, which presses against the driven capstan to increase friction.
The ‘930’ is a large machine as well (49×39×17.5 centimeters), that maintains all the functional characteristics of the larger brother in a more compact package. Its very sturdy cast-metal frame, ‘Kunststoff’ main board and idler-wheel drive to the internal rim of its heavy platter gives it peerless sonic qualities. The drive system ...
The other styles are the belt-drive turntable and the idler-wheel type. [citation needed] Each name is based upon the type of coupling used between the platter of the turntable and the motor. Direct-drive turntables are currently the most popular phonographs, due to their widespread use for turntablism in DJ culture.
There are presently three main phonograph designs: belt-drive, direct-drive, and idler-wheel. In a belt-drive turntable the motor is located off-center from the platter, either underneath it or entirely outside of it, and is connected to the platter or counter-platter by a drive belt made from elastomeric material.
Most tape recorders move the tape by pinching and pulling it between a motorized capstan, a rotating metal shaft or spindle, and a larger rubber idler roller, called a pinch wheel or pinch roller. This ensures tape speed remained constant as it moved across the recording head regardless of the amount of tape on either reel.
Turntablism has origins in the invention of direct-drive turntables.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]
It supplied turntables and autochangers to many of the world’s record player manufacturers, eventually gaining 87% of the market. The company also manufactured their own brand of player, the Monarch automatic record changer, which could select and play 7", 10" and 12" records at 16, 33 1 ⁄ 3 , 45 or 78 rpm, automatically intermixing ...