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The speed of 33 1/3 was introduced in 1927 after theoretical analysis of the compromise between signal-to-noise ratio and playing time (3 minutes per radial inch) by J. P. Maxfield of Bell Laboratories for sound films produced on the Vitaphone system.
The LP (from "long playing" or "long play") is an analog sound storage medium, specifically a phonograph record format characterized by: a speed of 33 + 1 ⁄ 3 rpm; a 12- or 10-inch (30- or 25-cm) diameter; use of the "microgroove" groove specification; and a vinyl (a copolymer of vinyl chloride acetate) composition disk.
Jan 17, 2024 · In the modern era, vinyl records tend to come in only two sizes: 12-inch for full-length albums and 7-inch for singles. The full-album 12-inch LPs are played at 33 1/3 RPM, and 7-inch singles are usually played at 45 RPM.
May 25, 2022 · In being arguably the most liminal record size on a vinyl record size chart with a run time of 12 to 15 minutes at 33 1 / 3 rpm and 9 to 12 minutes at 45 rpm, there are no doubts as to the liminality of the medium in between its larger and smaller brethren.
iGuide's 33-1/3 RPM Record Album price guide and appraisal service levels the playing field by giving you the accurate pricing you need to know before making a buying or selling decision. No more pricing blunders.
May 26, 2023 · The main 3 turntable speeds are carefully designed to match specific record types, preserving the intended pitch and sound quality. 33⅓ RPM (long play or LP records) The 33 1/3 RPM speed is a fundamental component of turntable operation, specifically designed for playing LP (Long Play) records.
When it comes to vinyl record speeds, 33 RPM is for 12-inch LPs, 45 RPM is for 7-inch singles, and 78 RPM is for older, 10-inch shellac records. Each speed requires you to change the settings on your record player, with 33 and 45 RPM being the most commonly used today.
