Material Of Pre Vinyl 78 Rpm Records

Genres of used 78 rpm vinyl records.

Material of pre vinyl 78 rpm records.

Citation needed polystyrene is often used for 7 inch records. The new product was a 12 or 10 inch 30 or 25 cm. Before itunes cds 8 tracks lps or even seven inch eps 78s were the main medium for recorded music so called because they were played at 78 rotations per minute rpm produced primarily by victor columbia brunswick and capitol 78s were first invented by emile berliner in the late 19th century. If you are a new comer to vinyl you may wonder what these numbers actually mean.

The majority of non 78 rpm records are pressed on black vinyl. There are multiple genres of music that are represented on 78 rpm vinyl records. This style of music originated in the deep south of the united states amongst the african american slave communities. Generally 78s are made of a brittle material which uses a shellac resin thus their other name is shellac records.

Vinyl records typically come in three speeds. 33 45 and 78 rotations per minute rpm. The coloring material used to blacken the transparent pvc plastic mix is carbon black which increases the strength of the disc and makes it opaque. The difference in vinyl record speeds 33 45 and 78 records 33 45 78.

At the time the lp was introduced nearly all phonograph records for home use were made of an abrasive and therefore noisy shellac compound employed a much larger groove and played at approximately 78 revolutions per minute rpm limiting the playing time of a 12 inch diameter record to less than five minutes per side.