![]() (The actual playing time is a ratio between speed and the length of the grooves.) The larger the diameter, the longer the groove can be and the greater the possible playing times, dependent upon rotational speed. ![]() Vinyl records also come in three standard diameters: 7-inch, 10-inch and 12-inch. The 33 1/3 rpm and 45 rpm speeds continue to be the standards to this very day 78 rpm records were largely phased out by the mid-1950s. Interestingly, early 45s were released in different colors, depending on the type of music they held. In the years after World War II, several competing formats appeared, most notably the 33 1/3 rpm LP (Long Play) record which not only had a slower playback speed but narrower grooves, followed soon thereafter by the middle-ground 45 rpm format. This had a severe limitation in that records running at such a high speed could only hold a few minutes of music. In the early days, rotation speeds of records were not always consistent, generally running from around 70 to 80 rpm, but by the 1920s, 78 rpm became the standard. The “rpm” is an abbreviation for “revolutions per minute” - an indication of how fast the record is meant to spin on the turntable. Vinyl records come in three speeds: 33 1/3 rpm (often just called a “33”), 45 rpm and 78 rpm. In this article, we’ll look at the key factors that determine their sound quality and durability. Even through the advent of digital technology, vinyl records remain amazingly popular, and have even enjoyed a resurgence in recent years.īut not all vinyl is the same. What was unusual was that the quadraphonic version of the album included a quadraphonic Compact 33.These round, flat vinyl disks with spiral grooves have brought music to the ears of listeners around the world for more than a century. You've got the Wonder 7", the Yes 7", one with the "McCartney II" album and an unusual one included with Joan Baez's "Blessed Are." 2 LP set. Sometimes some extra songs were on them which couldn't fit on the album. In my collection, I have a copy of Neil Young's "Harvest" LLP and Led Zeppelin's 4th album with all the good songs on it like "Stairway." and "Black Dog".įor the general public, 7" 33 1/3 compact 33's were often used as books & records for kids, talking books, special bonus discs, radio station promos and other promotional uses. The LLP's were made for jukeboxes well into the 1970's before they petered out. Stereo 45's would again re-appear at the end of the 60's. Stereo 45's were out of production, so the only way that stereo jukeboxes could get stereo records was to play the LLP's. In 1963, Seeburg introduced the LPC1, which played the next generation 7" 33 1/3 record now known as the LLP or Little LP, which usually had 3 songs on each side in stereo and were also abridged versions of a current LP. By this time, the 7" 33 1/3 records were called Compact 33's. The usual fare was a set of 5 special stereo records of a featured artist's latest album. In 1961, the artist of the week feature started. ![]() Some of the first were the stereo Seeburg jukeboxes in 1960. ![]() Where the 7" 33 1/3 found it's market was in the jukebox industry. record companies tried in vain into the 1960's to get the public to accept the 7" 33 1/3 singles and EP's. The first Columbia 7" 33 1/3 single had an anti-slip ring around the label like European and later Capitol 45's. Columbia was probably first, which they introduced to compete with RCA's 45 single. 7 inch 33 1/3 rpm records have been around for many decades.
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