In 1877, Thomas Edison invented the phonograph. By 1895, a shellac-based disc was introduced and became standard. Too fragile, these 10 inches Shellac records played at a speed of 78 revolutions per minute. The mechanical surface noise of the contact of the needle with the disk groove was very intense, resulting in a loss signal-noise ratio. The disc 10 inches diameter rotating at a speed of 78 rpm resulted in about only 3:30 minutes of performance. Thus the time of recording became a great problem, creating difficulties to perform a more elaborate song, mainly when playing Erudite / Classical music with its many and long movements.
Right after the Second World War, around 1948, the Columbia Broadcast System released a magic solution: the first "early Long Plays" 10 inch vinyl began to be sold. Spinning at a lower speed, 331/3 RPM, it provided greater duration of its execution. In addition, the surface noise of the contact of the needle with the vinyl diminished. With all this technology as support, the revolution of HiFi (High Fidelity) started at the '50s. In the early '60s, with the advent of Long Plays 12-inch, 10-inch records felt into disuse, being produced later only for special editions. For Collecting Vinyl Records, please refers to our information page at http://www.brazilcult.com/collecting-vinyl