From the 1950s to the 1970s it was possible to buy turntables with all four speeds: 16, 33, 45 and 78 RPM.
Some recordings (mainly the vocals), were equalized to record at 16 RPM and try to avoid the "spike noise", but without success. This speed is still used today, in fact it is the most used, although record companies make 45 RPM releases on 10 "discs.Īlthough most LPs were recorded at 33 RPM, due to the high fidelity some continued to be recorded at 45 RPM, especially the singles. Īt first this format was used for recording on 12 "diameter discs, but later it was also used for recording 7" singles at this speed. In addition, in a 2.4 meter long shelf of 78 RPM records, now with the new format, only half a meter is enough to store the same amount.
In comparison: one 33 RPM drive equals five 78 RPM drives, the new drives were also lighter. characteristicsīy comparison, the microgroove on a 33 RPM record was as fine as a human hair, spanning about 118 grooves per centimeter, whereas the 78 RPM record only had 33 grooves per centimeter. In 1948, twelve-inch (30 cm) records, also long known as LPs, were presented by the Columbia Records company at a press conference in New York on June 21, 1948. Just coinciding with this great crisis, they were not successful, since the new format implied buying new equipment. The first 33 RPM records came out right around the time of the Great Depression of 1929. Vinyl records recorded at 33 RPM are also well known for being called LP ( Long Play, long duration) this name is for the difference between the duration of a disc of 78 RPM versus a 33 RPM one.
#Gramophone 33 rpm Bluetooth#
RCA Victor first started using this new speed in 1931, with the idea that in a disc the longer recording time. Wooden Phonograph Gramophone Turntable Vinyl Record Player Speakers Stereo System Control 33/45 RPM FM AUX USB Ouput Bluetooth 4. Generally on 12 ", 7" ( singles ) records, although 10 "gramophone records were also used for some time (no longer in use). In addition, the soft vinyl is unable to withstand the same harsh tracking forces designed for harder shellac.It is the speed most used when recording vinyl records for fidelity. Vinyl records are unable to be effectively played on mechanical gramophones as the machines are designed to run at faster speeds. These are typically played on electrically powered turntables. Vinyl records were first introduced to the public in the 1950s and continue to be manufactured in the present day. The seven-inch kind is also called a 45, in reference to its rotation speed, and is typically used for three to four minute singles. These can typically hold twenty minutes of music per side and are also known as albums. These are generally twelve inches wide, although ten-inch varieties exist. Long-play (LP) records are the most common, playing at 33 rpm.