How Often Should You Change Your Turntable’s Stylus?

How Often Should You Change Your Turntable’s Stylus?

phonograph, also called record player, instrument for reproducing sounds by means of the vibration of a stylus, or needle, following a groove on a rotating disc. A phonograph disc, or record, stores a replica of sound waves as a series of undulations in a sinuous groove inscribed on its rotating surface by the stylus. When the record is played back, another stylus responds to the undulations, and its motions are then reconverted into sound.

Though experimental mechanisms of this type appeared as early as 1857, the invention of the phonograph is generally credited to the American inventor Thomas Edison (1877). His first recordings were indentations embossed into a sheet of tinfoil by a vibrating stylus; the tinfoil was wrapped around a cylinder that was rotated as the sounds were being recorded. Improvements in Edison’s process followed, notable among which were Emil Berliner’s innovation in 1887 of tracing sound grooves in a spiral on a flat disc rather than in a helix on a cylinder. A negative was made from the flat master disc, and the negative then used as a mold for making many copies that reproduced the original master disc. These “records,” as they came to be known, could be played on a reproducing machine Berliner named a Gramophone.

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