Oberheim OB-Xa
Encyclopedia
The Oberheim OB-Xa was Oberheim
's overhaul of their first compact synthesizer
, the OB-X
. The OB-Xa was released in 1980, a year after the OB-X was released. Instead of discrete circuits for oscillators and filters, the OB-Xa (and the Oberheim synths to follow) switched to Curtis
integrated circuit
s. This made the inside of the synth less cluttered, reducing the labor required to replace bad parts; and reduced the cost of manufacture. However, today it's much easier to fix an OB-X than OB-Xa, as Curtis parts are getting scarcer, whereas discrete parts used in OB-X are almost always readily available.
Aside from hardware changes, the OB-Xa had better interface features compared to OB-X. These included being able to split the keyboard into two halves with different voices; the ability to layer voices to create thicker sound (essentially making two notes sound for every key pressed). polyphony stayed the same - again 4,6 and 8-voice models were offered.
One function that did disappear from OB-X voice architecture, was cross modulation, or frequency modulation of vco with the second vco. When done with analogue circuits, it's a unique sound made famous by Prophet 5 and its poly-mod section. Lack of this somewhat reduced the range of sounds possible on OB-Xa.
Oberheim
Oberheim Electronics is an American company, founded in 1969 by Tom Oberheim , which manufactured audio synthesizers and a variety of other electronic musical instruments.-Oberheim Electronics:...
's overhaul of their first compact synthesizer
Synthesizer
A synthesizer is an electronic instrument capable of producing sounds by generating electrical signals of different frequencies. These electrical signals are played through a loudspeaker or set of headphones...
, the OB-X
Oberheim OB-X
The Oberheim OB-X is an analog polyphonic synthesizer. It was the first Oberheim synthesizer that was created with internal prewired modules and not with the bulky SEM modules. Because of this, it was more functional for live performance, and therefore more portable. It was introduced in 1979 and...
. The OB-Xa was released in 1980, a year after the OB-X was released. Instead of discrete circuits for oscillators and filters, the OB-Xa (and the Oberheim synths to follow) switched to Curtis
Curtis CEM
Curtis CEM chips are analog chips used in many synthesizers.Curtis Electromusic Specialties, founded by Doug Curtis , developed a family of signal-processing products for electronic music synthesizers and audio equipment.-SSM and CEM:Chips List...
integrated circuit
Integrated circuit
An integrated circuit or monolithic integrated circuit is an electronic circuit manufactured by the patterned diffusion of trace elements into the surface of a thin substrate of semiconductor material...
s. This made the inside of the synth less cluttered, reducing the labor required to replace bad parts; and reduced the cost of manufacture. However, today it's much easier to fix an OB-X than OB-Xa, as Curtis parts are getting scarcer, whereas discrete parts used in OB-X are almost always readily available.
Aside from hardware changes, the OB-Xa had better interface features compared to OB-X. These included being able to split the keyboard into two halves with different voices; the ability to layer voices to create thicker sound (essentially making two notes sound for every key pressed). polyphony stayed the same - again 4,6 and 8-voice models were offered.
One function that did disappear from OB-X voice architecture, was cross modulation, or frequency modulation of vco with the second vco. When done with analogue circuits, it's a unique sound made famous by Prophet 5 and its poly-mod section. Lack of this somewhat reduced the range of sounds possible on OB-Xa.
Albums that feature OB-Xa
- Paul DavisPaul Davis (singer)Paul Lavon Davis was an American singer and songwriter, best known for his radio hits and solo career which started worldwide in 1970. His career encompassed soul, country and pop music...
- Cool Night (Album) (1981) - Stevie NicksStevie NicksStephanie Lynn "Stevie" Nicks is an American singer-songwriter, best known for her work with Fleetwood Mac and an extensive solo career, which collectively have produced over forty Top 50 hits and sold over 140 million albums...
- The Wild Heart (album)The Wild Heart (album)The Wild Heart is the second studio album by American singer-songwriter and Fleetwood Mac vocalist Stevie Nicks. Released on June 10, 1983, a year after Fleetwood Mac's successful #1 album, Mirage, it reached #5 on the U.S. Billboard 200 charts and achieved platinum status on September 12th, 1983...
(1983) - Jean Michel JarreJean Michel JarreJean Michel André Jarre is a French composer, performer and music producer. He is a pioneer in the electronic, ambient and New Age genres, and known as an organiser of outdoor spectacles of his music featuring lights, laser displays, and fireworks.Jarre was raised in Lyon by his mother and...
- Concerts in China (1981) - Jean Michel JarreJean Michel JarreJean Michel André Jarre is a French composer, performer and music producer. He is a pioneer in the electronic, ambient and New Age genres, and known as an organiser of outdoor spectacles of his music featuring lights, laser displays, and fireworks.Jarre was raised in Lyon by his mother and...
- ZoolookZoolookZoolook is the fourth overall mainstream studio album by Jean Michel Jarre, and released on Disques Dreyfus in 1984. It makes extensive use of digital recording techniques and sampling. It is considered by many fans as one of Jarre's most experimental albums to date...
(1984) - Laurie AndersonLaurie AndersonLaura Phillips "Laurie" Anderson is an American experimental performance artist, composer and musician who plays violin and keyboards and sings in a variety of experimental music and art rock styles. Initially trained as a sculptor, Anderson did her first performance-art piece in the late 1960s...
- Big ScienceBig Science (album)Big Science is the 1982 debut album by avant-garde artist Laurie Anderson and the first of a 7-album deal she signed with Warner Bros. Records. It is best known for the 8-minute epic "O Superman", which reached #2 in the UK. The album is minimalist and monochrome in sound, and like a great deal of...
(1982) - QueenQueen (band)Queen are a British rock band formed in London in 1971, originally consisting of Freddie Mercury , Brian May , John Deacon , and Roger Taylor...
- Hot SpaceHot SpaceHot Space is the tenth studio album by British rock band Queen, released in May 1982. Marking a notable shift in direction from their earlier work, Queen employed many elements of disco, pop music, R&B and dance music on Hot Space, being partially influenced by the success of their 1980 hit...
(1982) - QueenQueen (band)Queen are a British rock band formed in London in 1971, originally consisting of Freddie Mercury , Brian May , John Deacon , and Roger Taylor...
- The WorksThe Works (Queen album)-Radio Ga Ga:"Radio Ga Ga" was composed on keyboards, after Roger Taylor heard his son Felix saying "radio ca ca". He wrote it in Los Angeles and locked himself in the studio with a Roland Jupiter 8 and a drum machine. Afterwards John Deacon came up with a suitable bass line. Mercury reconstructed...
(1984) - Simple MindsSimple MindsSimple Minds are a Scottish rock band who achieved worldwide popularity from the mid-1980s to the early 1990s. The band produced a handful of critically acclaimed albums in the early 1980s and best known for their #1 US, Canada and Netherlands hit single "Don't You ", from the soundtrack of the...
- Sparkle In The Rain (1984) - Van HalenVan HalenVan Halen is an American hard rock band formed in Pasadena, California, in 1972. The band has enjoyed success since the release of its debut album, Van Halen, . As of 2007 Van Halen has sold 80 million albums worldwide and has had the most #1 hits on the Billboard Mainstream Rock chart...
- 19841984 (Van Halen album)1984 is the sixth studio album by American hard rock band Van Halen. One of the band's more popular albums , 1984 is to date the final album featuring singer David Lee Roth before he left the band in the spring of the following year.-Background and recording:Eddie Van Halen,...
- (1984) - Simple MindsSimple MindsSimple Minds are a Scottish rock band who achieved worldwide popularity from the mid-1980s to the early 1990s. The band produced a handful of critically acclaimed albums in the early 1980s and best known for their #1 US, Canada and Netherlands hit single "Don't You ", from the soundtrack of the...
- New Gold Dream (1983) - The StranglersThe StranglersThe Stranglers are an English punk/rock music group.Scoring some 23 UK top 40 singles and 17 UK top 40 albums to date in a career spanning five decades, the Stranglers are the longest-surviving and most "continuously successful" band to have originated in the UK punk scene of the mid to late 1970s...
- Feline(1983) - Mike OldfieldMike OldfieldMichael Gordon Oldfield is an English multi-instrumentalist musician and composer, working a style that blends progressive rock, folk, ethnic or world music, classical music, electronic music, New Age, and more recently, dance. His music is often elaborate and complex in nature...
- Crises (1983) - Silent Running (Belfast band)Silent Running (Belfast band)Silent Running are an Northern Irish rock band, who emerged from the Belfast punk scene and were originally called The Setz before changing musical direction in 1982....
- Shades of Liberty (1984) - Mike OldfieldMike OldfieldMichael Gordon Oldfield is an English multi-instrumentalist musician and composer, working a style that blends progressive rock, folk, ethnic or world music, classical music, electronic music, New Age, and more recently, dance. His music is often elaborate and complex in nature...
- Killing Fields - Soundtrack (1984) - RushRush (band)Rush is a Canadian rock band formed in August 1968, in the Willowdale neighbourhood of Toronto, Ontario. The band is composed of bassist, keyboardist, and lead vocalist Geddy Lee, guitarist Alex Lifeson, and drummer and lyricist Neil Peart...
- Signals (1982) - RushRush (band)Rush is a Canadian rock band formed in August 1968, in the Willowdale neighbourhood of Toronto, Ontario. The band is composed of bassist, keyboardist, and lead vocalist Geddy Lee, guitarist Alex Lifeson, and drummer and lyricist Neil Peart...
- Grace Under PressureGrace Under Pressure (Rush album)Grace Under Pressure is the tenth studio album by the Canadian rock band Rush, released in 1984 . A symbol for the album is the letter "p" above a line with the letter "g" below ....
(1984) - RushRush (band)Rush is a Canadian rock band formed in August 1968, in the Willowdale neighbourhood of Toronto, Ontario. The band is composed of bassist, keyboardist, and lead vocalist Geddy Lee, guitarist Alex Lifeson, and drummer and lyricist Neil Peart...
- Moving PicturesMoving Pictures (album)- Personnel :* Geddy Lee - Bass guitar; Minimoog; Oberheim 8-voice synthesizer; OB-X, Moog Taurus bass pedals, vocals* Alex Lifeson - Electric and acoustic guitars, Moog Taurus...
(1981) - The Police - Ghost In The Machine (1981)
- Electric Light OrchestraElectric Light OrchestraElectric Light Orchestra were a British rock group from Birmingham who released eleven studio albums between 1971 and 1986 and another album in 2001. ELO were formed to accommodate Roy Wood and Jeff Lynne's desire to create modern rock and pop songs with classical overtones...
- Time (1981) & Secret Messages (1983)