![]() This limitation results in being able to fit a song or two on each side.ħ8 RPM records have not been commonly produced since the 50s’. 45s are going to be a much shorter 5 minutes, totaling up to 10 minutes for both sides. Next up would be your “45s” or 7-inch 45 RPM records. LPs were a set standard and have stood the test of time.Ī 12-inch 33RPM or an “LP” with microgrooves is by far the most common in modern pressings, which provides you a total of 44 minutes of music on a single record. Our playtimes have not increased much since then. These microgrooves required a needle stylus nearly one third the size of a 78 RPM stylus. ![]() Microgrooves are just a smaller groove within the vinyl record. Reducing the speed so drastically was possible through “microgrooves.” In 1948 Columbia Records introduced “long players,” or more commonly referred to as an “LP.” LPs were to fulfill the need of longer playtimes by spinning the record at a slower 33 RPM. When sound was introduced into movies, the short runtime of these 78 RPM records was insufficient and required longer playtimes. In the early days of vinyl records, 78 RPM was the most common and only provided a total of 10 minutes of runtime. Listed below are the most common sizes and RPMs you may come across and the advised max runtimes of the combination determined by manufacturers. ![]() Groove length is a product of the diameter of the record and how tightly the grooves are packed together. The playing time of a vinyl record depends on total groove length. Playing Times of the Many Vinyl Variations However, there are many other standards at play, and when purchasing antique albums. These are the two most common types of records and covers a majority of the market. Generally, any longer, the sound quality would start to deteriorate. A 7-inch 45 RPM record can fit approximately 5 minutes per side for a total of 10 minutes. Vinyl records share the same limitation and can represent a limited playtime accurately.Ī standard 12-inch 33 RPM vinyl record can have a playtime of roughly 22 minutes per side for a total of 44 minutes. Although the 33 RPM speed can be used with other vinyl record sizes, 33 records are almost always 12 inches, or 30 centimeters, in diameter.Just like any medium for music, there is only so much space you can use to transcribe music onto. This type of record is generally called an LP, or long-playing, record. Thirty-three records almost always have a larger physical size than a 45 or a 78, but the suggested RPM and the physical size of the record don’t always correlate.Ī 33 record actually has an RPM of 33 1/3, but the name was shortened to 33 for simplicity. The higher the RPM, the shorter the playtime will be.Ī record can be played at a different speed, but playing it at a speed it wasn’t created for will distort the sounds. The numbers 78, 45, and 33 all refer to revolutions per minute, or RPM. These records are also designed to be played at specific speeds. Records are sized differently because different records are designed to hold more or less music playtime.įor example, a 78 record will usually hold between three and seven minutes of music on each side.Ī larger 33 record has a playtime between 12 and 22 minutes of music on each side.įorty-five records, which are even smaller than a 78, usually have a playtime between nine and 15 minutes per side. What are different record sizes used for?
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