Turntable anti-skating is a feature used in phonograph turntables to prevent skating of the tonearm. Due to the offset between the cartridge's axis (which is approximately tangential to the disc) and the tonearm's pivot, the force applied (through friction) by the rotating disc to the cartridge tends to draw the tonearm toward the center of the record and distort the balance of the sound and of the wear suffered by the stylus and the vinyl groove. To prevent this, an appropriately-sized opposing force (a rotational torque) is applied at the tonearm. This is accomplished in various ways by dedicated mechanisms, depending on the tonearm's manufacturer, and ranging from a small counterweight adjustable by a knob, to adjustable spring or magnetic mechanisms, usually calibrated in grams of forc
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- Turntable anti-skating (en)
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| - Turntable anti-skating is a feature used in phonograph turntables to prevent skating of the tonearm. Due to the offset between the cartridge's axis (which is approximately tangential to the disc) and the tonearm's pivot, the force applied (through friction) by the rotating disc to the cartridge tends to draw the tonearm toward the center of the record and distort the balance of the sound and of the wear suffered by the stylus and the vinyl groove. To prevent this, an appropriately-sized opposing force (a rotational torque) is applied at the tonearm. This is accomplished in various ways by dedicated mechanisms, depending on the tonearm's manufacturer, and ranging from a small counterweight adjustable by a knob, to adjustable spring or magnetic mechanisms, usually calibrated in grams of forc (en)
- L'antiskating è un dispositivo meccanico (a molla o piccolo contrappeso) o magnetico applicato al braccio di lettura di un giradischi con la funzione di contrastare l'azione dalla forza d'attrito radente sviluppata tra puntina e disco in vinile che ha una componente perpendicolare al braccio di lettura e che tende a spingerlo verso il centro del piatto. Fra gli audiofili vi è comunque discordanza sull'effettiva utilità di questo dispositivo. (it)
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| - L'antiskating è un dispositivo meccanico (a molla o piccolo contrappeso) o magnetico applicato al braccio di lettura di un giradischi con la funzione di contrastare l'azione dalla forza d'attrito radente sviluppata tra puntina e disco in vinile che ha una componente perpendicolare al braccio di lettura e che tende a spingerlo verso il centro del piatto. È costituito essenzialmente da un meccanismo che permette di applicare una piccolissima forza, regolabile a seconda della massa del braccio e della testina di lettura, la quale controbilancia la spinta sul braccio di lettura che tende ad andare verso l'interno del disco. Da considerare che nei bracci a traslazione tangenziale questo fenomeno è assente.La difficoltà di progettazione dell'antiskating risiede nell'uniformità di intervento del meccanismo su tutto l'arco di lavoro del braccio di lettura. Fra gli audiofili vi è comunque discordanza sull'effettiva utilità di questo dispositivo. (it)
- Turntable anti-skating is a feature used in phonograph turntables to prevent skating of the tonearm. Due to the offset between the cartridge's axis (which is approximately tangential to the disc) and the tonearm's pivot, the force applied (through friction) by the rotating disc to the cartridge tends to draw the tonearm toward the center of the record and distort the balance of the sound and of the wear suffered by the stylus and the vinyl groove. To prevent this, an appropriately-sized opposing force (a rotational torque) is applied at the tonearm. This is accomplished in various ways by dedicated mechanisms, depending on the tonearm's manufacturer, and ranging from a small counterweight adjustable by a knob, to adjustable spring or magnetic mechanisms, usually calibrated in grams of force. Note that while the angular velocity is, ideally, constant, the peripheral velocity of the moving groove against the stylus is not, varying for instance from approximately 50 cm/s down to 15 cm/s from start to finish of a 33 rpm, 12" (30.48cm) record. The angle of skew of the stylus cartridge with respect to a chord of the circular record (and groove) while the tonearm rests on the record is also variable. Thus, any opposing force applied to the tonearm to counteract skating, if not variable during the playing of the record, is fixed, and at best an average value, only really perfectly in balance with the skating force at just one unique radius from the center of the disk. Yet, anti-skating schemes perform a useful function in minimizing asymmetric wear of styli and grooves, although not eliminating it entirely. Linear-tracking turntables were invented in part to eliminate the possibility of skating. (en)
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