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ARP Quartet Synthesizer Keyboard

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    Description
    The Seil Orchestra was bought by ARP Instruments to be slightly modified, relabeled and then sold as the ARP Quartet. This version replaced the Reed section with an Organ one, however aside from that the synthesizer was almost identical.

    The original Orchestra was very limited but still a very characteristic instrument for its time. It produces its sounds from a divide-down oscillator network and therefore has 49 note (unlimited) polyphony.

    Although it contains 4 sections of presets (Brass, Strings, Reed and Piano), each which contain two sounds, the only parameters that can be edited are Vibrato (LFO), Brilliance (for the Brass, which also has a separate 'Brass Attack'), Attack and Decay. This ultimately means that the Orchestra cannot produce many different sounds; however because of its Italian origin and its distinctive routing, the Orchestra sound is not matched by any other similar synthesizers.
    Images
    Architecture
    Type: Analog
    Synthesis: Divide Down, Subtractive
    Oscillators
    Oscillators: 2
    Oscillator Notes:
    Tones: Brass, Organ, Strings, Piano
    Envelopes
    Envelopes: 2
    Evelope Paramerters: Attack, Decay
    Envelope Notes::
    Brass Attack
    String Attack and Decay
    Filters
    Filters: 1
    Types: 24dB Slope (4-pole), Low Pass, Resonance
    LFO
    LFO: 1
    LFO Parameters: Triangle
    Polyphony & Tuning
    Polyphony: 49
    Timbrality: 2
    Tuning: Standard
    Patches
    Patches RAM: 4
    Storage: Internal
    Case
    Case: Keyboard
    Keyboard: 49 keys, Non-weighted, Plastic
    Controls: Faders
    Connections
    Audio Output Connections: 1/4" Phone Jack
    Audio Output Notes: 1 Mono 1/4" TR
    Inputs: 1 Mono 1/4" TR
    Power: 120 V AC
    Production
    Year Released: 1979
    Year Discontinued: 1980
    Manuals & Documents
    Reviews
    Pricing
    MSRP List Price: $1350 - convert
    Retail Street Price: $1200 - convert
    Used Price: $250 - $500 - convert
    Shopping
    YouTube Videos
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