ARP 2500

2500
ARP 2500
Manufacturer ARP Instruments, Inc.
Dates 1970–81
Price US$7180 - US$19920
Technical specifications
Polyphony Duophonic
Timbrality Monotimbral
Oscillator 1004p
1004r
1004t
1023
Synthesis type Analog Subtractive
Storage memory none
Effects none
Input/output
Keyboard 3002 Two voice. 5 octaves.
3222 Four voice, split. 5 octaves.
3604 One voice, portable. 4 octaves.

The ARP 2500 is the first product of ARP Instruments, Inc., built from 1970 to 1981. It is a monophonic analog modular synthesizer equipped with a set of sliding matrix switches above each module. These are the primary method of interconnecting modules. There are rows of 1/8" miniphone jacks at the end of each row of matrix switches,[1] to interconnect rows of switches. The main 2500 cabinet can hold 12 modules, and optional wing cabinets can each hold 6. The matrix switch interconnection scheme allow any module's output to connect to any other module's input. This is unlike the patch cords of competitive units from Moog and Buchla which can obscure control knobs and associated markings, but it has the disadvantage of greater cross-talk.[2]

Although the 2500 proved to be a reliable and user-friendly machine, it was not commercially successful, selling approximately 100 units.[3] A collection of the 2500s most popular modules was packaged into a single, non-modular unit as the ARP 2600, leaving out the matrix switching and more esoteric functions.

Notable users

The 2500's most notable usage is in the 1977 motion picture Close Encounters of the Third Kind[4] to communicate with aliens. The ARP technician sent to install the unit, Phil Dodds, was cast as the musician. The unit featured in the film consisted of a fully loaded main unit, two fully loaded wing cabinets and dual keyboards in a custom case.

It has been used by artists such as The Who, Jimmy Page, David Bowie, Jean Michel Jarre, Vangelis, Kraftwerk, Faust, Aphex Twin and John Frusciante. The composer Eliane Radigue has worked almost exclusively with the 2500.

The ARP 2500 was extensively used by British producer David Hentschel on recordings such as "Funeral For A Friend" from Elton John's 1973 album Goodbye Yellow Brick Road. Jeff Wayne's 1978 multi-platinum selling album War Of the Worlds features the ARP 2500, including the sound of Martian speech.

References

  1. ↑ "ARP 2500 image at Sequencer.de".
  2. ↑ Jenkins, Mark (2007). Analog Synthesizers: Understanding, Performing, Buying- from the legacy of Moog to software synthesis. Focal Press. p. 60. ISBN 978-0-240-52072-8.
  3. ↑ "A Tribute to the ARP 2500, the Close Encounters Synth".
  4. ↑ "ARP 2500". Sound On Sound. August 1996. Archived from the original on 6 February 2015.
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