Debut LP Magazine (1984 – 1985)
Debut was a monthly music magazine published in the UK that combined a magazine in a gatefold cover that also contained a 12-inch LP record with tracks by artists featured in the magazine. At £2.99 per...
View ArticleAmbisonic UHJ (1977 – )
Ambisonic UHJ is a matrix encoded quadraphonic audio system introduced around 1977 to deliver four-channel playback using standard two-channel stereo formats like LPs and music cassettes. From 1983,...
View ArticleRCA CED VideoDisc interactive (1983 – 1986)
In 1983, RCA launched a version of their CED VideoDisc system that offered random access to enable interactive features for educational and entertainment titles. The discs were ‘banded’ to allow the...
View ArticleDynaquad (1970 – 1976)
In 1969, Dynaco introduced a system to ‘derive’ surround sound from stereophonic LPs by using a passive electronic circuit called a Hafler Circuit. This was designed by Dave Hafler of Dynaco in the...
View ArticleAretino Record (1907 – 1914)
Aretino Records were 10-inch (or sometimes 12-inch) 78 rpm shellac records with an unusually large centre hole of three-inch diameter. This was the largest spindle-hole of any record and meant the...
View ArticleLaserDisc with teletext (1981 – late 1990s)
Teletext was a means of displaying text and basic graphics on a television that had the ability to decode the information. Invented in the early 1970s, the first major broadcaster to offer a broadcast...
View ArticleOptigan Program Disc (1971 – 1976)
The Optigan (short for Optical Organ) was an electric organ designed for home use, and used 12-inch plastic discs that stored stored samples of sounds, chords and rhythms. It was first introduced in...
View ArticleSony Writable Disk (mid 1980s – mid 1990s)
Sony Writable Disks were 12-inch diameter optical disks contained in a caddy (and their own carry case) and were designed to be used in Sony’s WDD (Writable Disk Drive) series of drives such as the...
View ArticleMemovox (early 1940s – 1950s)
The Memovox disc was used for voice dictation, and also for recording radio transmissions, for both military and civilian purposes. It consisted of a flexible acetate plastic disc onto which grooves...
View ArticleLaserDisc 3D (1990s)
In the latter years of LaserDisc production, a handful of 3D video titles were released on 12-inch LaserDiscs. Among these were titles such as ‘America’s Greatest Roller Coaster Thrills’, ‘Virtual Sea’...
View ArticleVogue – The Picture Record (1946 – 1947)
Vogue picture records were introduced in 1946 by Sav-Way Industries in the US. They were 78 rpm phonograph records, mostly being 10-inch in diameter (though some 12-inch discs were also released) and...
View Article12-inch 45 rpm album (1970s – )
Since the 1970s, a number of albums have been released on 45 rpm 12-inch records. Strictly speaking these are not true Long Play records as they don’t share all of the characteristics of the Long Play...
View ArticleSony CRVdisc (late 1980s – late 1990s)
The Sony CRVdisc (Component Recording Video disc) was a recordable 12-inch optical disc system for professional video or still image use. The system was developed by Sony, and released in the late...
View ArticlePlasmon LaserDrive (1987 – mid 2000s)
Plasmon, a UK company, began selling 12-inch optical drives and discs in 1987. The discs look like LaserDiscs in caddies, but are quite different as they use phase-change technology to enable them to...
View ArticleEmidisc (1946 – mid 1970s)
Emidisc was a brand of lacquer disc (sometime known as acetate or instantaneous disc) that was introduced to the UK market perhaps as early as 1946 (when the Emidisc name was trademarked) by EMI. They...
View ArticleAudiodisc (1938 – )
Audiodisc is a brand of lacquer disc (sometime known as acetate or instantaneous disc) that was introduced to the US market in 1938 by Audio Devices, Inc. They were made under license from the Pyral...
View ArticleMatrix H (1977 – 1978)
Matrix H was a matrix quadraphonic audio system devised by the BBC in the mid-1970s and first used in 1977. It was one of a number of systems tested by the BBC, lettered from A to H. One of the...
View ArticleLaserKaraoke (1982 – 2001)
LaserKaraoke (also known as LD-G) was introduced by Pioneer in 1982, initially for the Japanese market for use in bars and restaurants. A home player was introduced in 1985, and LaserKaraoke was...
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White label vinyl record (1948 – )
White label vinyl records are generally 12-inch LPs, or 7-inch singles and come with a plain centre label (usually white) and are in plain packaging. The centre label might have handwritten details of...
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Record album (late 1900s – 1950s)
Sometime during the late 1900s, record companies began to sell sets of 78rpm disc records in hardback ‘albums’. These were much like photograph albums, but with paper sleeves for multiple 10-inch or...
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