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Omni

ARP Omni

Omni
Omni

Released: 1976

MSRP: $2450US

Synopsis:

Ensemble with monophonic (preset volume envelope) bass and "polyphonic" (divided oscillator) string and synth engines. Bass shares string and synth signal paths. Architecture Class: Conventional (subtractive).

Ebay Description:

The ARP Omni is a 49 key analog ensemble synthesizer, featuring monophonic bass, polyphonic string and synth sections, with dedicated outputs and chorus. Poly Synth section features a 24dB low pass filter and envelope. String section features an attack and release controls.

Physical

Form Factor Dimensions Weight Audio Input Audio Output Communication Port Control Input Control Output Switch Input Power
49 keys ? 33lbs no high (XLR) low Synthesizer no CV:VCF pedal:VCF gate:10V trigger:10V (2us) sustain AC

Interface

Compatibility Multitimbral Memory Program Memory External Storage External Programming UI Input UI Output
- N/A no no no buttons/sliders LED

Architecture

Multitimbral Polyphony Unison Architecture
3 Bass:1 String:full PolySynth:full no VCO->VCF->VCA

Output

Effects Pan Modulator Volume Modulator Headphone
chorus phase shifter no StringEG SynthEG no

Control

Arpeggiator Arpeggiator External Sequencer Sequencer Memory Sequencer External Continuous Program Change
no no no N/A no no no

Keyboard

Key Pressure Chord Memory External Control External Sustain Key Scaling Velocity Curves
no no no pedal no no

Source

Name Signal Class Waveform Octave Range Amplitude Modulator Harmonics Modulator Pitch Modulator Wave Assign Modulator
BassVCO analog square 8' 16' (mix) no no no no
PolySynthVCO analog saw square 4' 8' (mix) no no no no
StringVCO analog saw 4' 8' (mix) no no no no

Filter

Name Signal Class IC Resonant Shape Frequency Modulator Resonance Modulator Shape Modulator
SynthVCF analog 4075 yes 24dB low pass CV LFO pedal SynthEG no no

Envelope

Name Level Rate Loop Polarity Trigger Level Modulator Rate Modulator
SynthEG sustain attack decay release no no key no no
StringEG - attack release no no key no no

LFO

Name Waveform Delay Polarity Sync Delay Modulator Level Modulator Rate Modulator
LFO triangle? no no no no no no
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