Siel Orchestra 2 Ensemble String Synthesizer

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The first Siel Orchestra Ensemble String Synthesiser appeared in 1979, followed by the new Orchestra 2 version in 1983, which was also released as the Siel OR-400 and the Sequential Circus Prelude. The instrument comprises a manual with 49 keys with full polyphony over four octaves C-C, 32 sliders and 8 push buttons for the sounds presets Brass, Strings, Organ and Piano.

The Siel Orchestra 2 has four sound colours that can be played individually or mixed in pairs: the Brass section with independent attack and sustain controls EG; the String section with independent attack and sustain controls EG; the Organ section is 2-voice and offers a Celeste sound; the Piano section has the two variations piano or Honky Tonk. The changes compared with Orchestra 1 are: the piano adds a clavichord sound, reed the additional instruments accordion and musette, string the pots mute and percussion, brass features additional pot for cutoff and resonance. The effects are a 5-band graphic EQ (250, 500, 1000, 2000 and 4000 Hz) and a kind of flange-type effect in the animator section. It has a LFO for a single Vibrato. (source: Polynominal)