Ad
related to: 33 1/3 rpm records value
Search results
Results from the WOW.Com Content Network
The most common rotational speeds for gramophone records are 33 + 1 ⁄ 3 revolutions per minute (rpm), 45 rpm, and 78 rpm. Established as the only common rotational speed prior to the 1940s, the 78 became increasingly less common throughout the 1950s and into more modern decades as the 33 and the 45 became established as the new standards for ...
The LP (from long playing [2] 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.
The Quarrymen – "That'll Be the Day"/"In Spite of All the Danger" (UK 78–rpm, acetate in plain sleeve, 1958). Only one copy made. The one existing copy is currently owned by Paul McCartney. Record Collector magazine listed the guide price at £200,000 in issue 408 (December 2012). McCartney had some "reissues" pressed in 1981 on UK 10-inch ...
Grooves on a modern 33 rpm record Uncommon Columbia 7-inch vinyl 33 + 1 ⁄ 3 rpm microgroove ZLP from 1948. CBS Laboratories had long been at work for Columbia Records to develop a phonograph record that would hold at least 20 minutes per side. [55] [56] Research began in 1939, was suspended during World War II, and then resumed in 1945. [57]
33 + 1 ⁄ 3 RPM may refer to: The playing speed, in rotations per minute, of LP records; The playing speed of some extended play records This page was last edited ...
The introduction of both the 33 1 ⁄ 3 rpm, 12-inch LP record and the 45rpm, 7-inch record, coming into the market in 1948/1949, provided advances in both storage and quality. These records featured vinyl (polyvinyl chloride or polystyrene), replacing the previous shellac materials.
(In many cases, the AFRN disc is the only form in which a classic radio show has survived.) 16-inch (41 cm) discs recorded at 33 + 1 ⁄ 3 rpm were used for these one-off "electrical transcriptions" beginning in the mid-1930s.
The earliest of these releases (pressed at 78 rpm), AP-1 through at least AP-29, came in a heavy manilla envelope. The first few, AP-1 through AP-5 are rare and highly prized among collectors. Around 1952 or 1953, Nunn switched to 33 1/3 rpm and began using the more standard cardboard sleeve with a color slick on the cover.
Ad
related to: 33 1/3 rpm records value