ShellacPlatten
ShellacPlatten, commonly known as shellac records, were the dominant format for commercial phonograph discs from the early 20th century until the late 1940s. They are made primarily from shellac resin pressed with fillers, yielding a tough but brittle material that can crack or warp if mishandled. The standard playback speed was 78 revolutions per minute. The most common diameters were 10 inches (25 cm) and 12 inches (30 cm), with 10-inch discs typically providing about three to four minutes of audio per side and 12-inch discs offering longer program material.
Grooves on shellacPlatten are usually lateral cuts, though some early pressings used vertical grooves; the groove
History and use: ShellacPlatten emerged in the first decades of the 20th century as the standard format,
Preservation: Today, shellacPlatten are collected for historical value. They are worn-out more quickly than vinyl and