Siel Orchestra II

Siel Orchestra II (1983)

Upgrade version of previous Siel Orchestra with basically same sound but with more edit

OVERVIEW C-C 49 keys with full polyphony, 32 sliders , 8 push buttons. No display.
The Orchestra a 4-part string processor synthesizer with 4 sounds presets: Brass, Strings, Organ and Piano, of which up to two can sound at the same time.

RELATED MODELS:
- Siel Orchestra Mk1 also known as Arp Quartet
- Siel OR400 quite the same with different outfit case
- Sequential Circuits Preludedis an US rebrand with black outfit
NOTE: Siel orchestra 2 exists also with a blue outfit, same as labeled "OR400"

Terminal connectors:

- main signal out HI LOW

- input signal

- tape Interface

- Volume pedal input

- pedalswitch input decay

OSCILLATORS Divide down tone generation, the 4 tone color families can be played individually or two can mixed.
Some section have some tweaks (same as mk1)

- Brass section with independent attack and sustain controls EG

- String section with independent attack and sustain controls EG

- Organ section is 2-voice and offers a Celeste sound

- Piano section has two variations:, traditional piano or Hony Tonk

NEW ADDED WITH Mk2:

- piano adds a clavichord sound.

- reed adds two additional instruments: accordion and musette.

- string section adds two pots: mute and percussion

- Brass features additional pot for cutoff and resonance and sound a bit different

Siel Orchestra II Specifications

Model: Orchestra 2

Brand: Siel
Country: Italy

Type: Analog

Synthesis: Subtractive
Year Released: 1983 Discontinued: 1986

Keyboard: 49 keys (C-C)
Polyphony: 49

Patches Preset: 4

Equalizer (250, 500, 1000, 2000 and 4000 Hz)

LFO (speed, depth and delay)

Transpose (pitchbend)

Animator (=chorus) and Flanger effect

External audio input.

No CV/Gate in/out puts

Filters Low Pass, Resonance

LFO: 1 Simple set waveform LFO with depth and speed controls

Effects

Animator which is a flanger effect + EQ

Controls: Buttons, Faders, Switches

Display Type: NONE

Connections

Audio Output Connections: 1/4" Phone Jack, Stereo Main

CHIPS:
M086 TOS, TDA1008 6 stage divider
LM13700 dual OTA

Weight: NA

Dimensions: NA

Siel Orchestra II (1983)

Overview

Sound