Description | The OR-400 from Siel was another run of the Orchestra models with a 49 key keyboard and all preset machine of piano, organ, brass, and, reed instruments.The instrument features 32 sliders and 8 buttons for controlling the sounds. The instrument is a preset machine however with the sliders the player can edit all 4 sounds with filtering and modulation. All edits are temporary and either need to be written down or memorized by the user. |
| Brand | Siel |
| Model | OR-400 |
| Device | Synth |
| Type | Keys |
| Engine Type | Analog |
| Engine | VCO Preset |
| Voices (max) | 49 |
| Oscillators | Max 2 of 4 |
| LFO | One variable speed LFO with Sine wave shape |
| Engine Detailed | Brass, Strings, Organ and Piano |
| Filter (VCF) | Four-pole resonant 24dB lowpass filter |
| Envelope (VCA) | Attack and Sustain for Brass and String sections |
| Keys | 49 |
| Key type | Keys |
| Velocity | No |
| Aftertouch | No |
|
Produced: | |
| Legend: |
Obvious |
Y: Yes, N: No, N/A: Not Applicable |
| VCO |
Voltage Controlled Oscillator |
DCO |
Digital Controlled Oscillator |
| LFO |
Low Frequency Oscillator |
Sub |
Sub Oscillator |
| VCF |
Voltage Controlled Filter |
VCA |
Voltage Controlled Amplifier |
| Velocity |
As with a piano, the harder you hit a key, the louder the sound, unlike most organs which always produce the same loudness no matter how hard you hit a key. |
Aftertouch |
Pressing a key after you activated it. Channel Aftertouch, no matter which key, it will send a Channel message. Poly Aftertouch, sends the pressure per key instead of the whole channel. |
| Values for OSC, LFO, Filter, Envelope are per voice unless stated otherwise. |
