LP record
Sign in to saveAlso known as longplay record, 33 RPM, full-length album, 12" LP record, vinyl LP, LP
longplay record
Key facts
- Media type
- Audio playback
- Encoding
- Analog groove modulation
- Capacity
- Originally 23 minutes per side, later increased by several minutes, much longer possible with very low signal level
- Read mechanism
- Microgroove stylus (maximum tip radius 0.001 in or 25 μm)
- Developed by
- Columbia Records
- Dimensions
- 12 inches (30 cm), 10 inches (25 cm), 90–240 g (3.2–8.5 oz)
- Usage
- Audio storage
- Released
- 1948 ; 78 years ago ( 1948 )
via Wikipedia infobox
Wikidata facts
- Image
- Disco de Vinilo.jpg
Show 3 more facts
- Commons category
- LP records
- equivalent class
- bibliograph.net/LPRecord
- P8168
- Zala
Sources (3)
via Wikidata · CC0
~13 min read
Article
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 black vinyl (a copolymer of vinyl chloride acetate) composition disk. Introduced by Columbia Records in 1948, it was soon adopted as a new standard by the entire US record industry and, apart from a few relatively minor refinements and the important later addition of stereophonic sound in 1957, it remained the standard format for record albums during a period in popular music known as the "album era". LP was originally a trademark of Columbia and competed against the smaller 7-inch sized "45" or "single" format by RCA Victor, eventually ending up on top. Today in the vinyl revival era, a large majority of records are based on the LP format, and hence the LP name continues to be in use today to refer to new records.
Format advantages