Opus-3

Moog Opus-3

Released: 1979

MSRP: ?

Synopsis:

Ensemble synth with 3 sections (strings, organ, brass). Architecture Class: Conventional (subtractive).

Ebay Description:

The Moog Opus-3 is a 49 key polyphonic ensemble synthesizer, featuring string, organ, and brass sections, along with an LFO routed to pitch and filter cut-off, chorus, stereo outputs, and an AR volume envelope. The string section has a resonant low/band/high pass analog filter. The organ section has a 12dB tone control and shares a resonant 24dB low pass analog filter with the brass section (ADSR envelope with shared D/R).

Physical

Form Factor	Dimensions	Weight	Audio Input	Audio Output	Communication Port	Control Input	Control Output	Switch Input	Power
49 keys	H:5.625in D:14.9375in W:29.75	20lbs (9kg)	no	mono stereo	no	no	no	sustain	AC

Interface

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

Architecture

Multitimbral	Polyphony	Unison	Architecture
no	full	no	String:VCO->MMF->VCA Organ:VCO->LPF->VCF->VCA Brass:VCO->VCF->VCA

Output

Effects	Pan Modulator	Volume Modulator	Headphone
chorus (strings/organ)	no	VCA-EG	no

Control

Arpeggiator	Arpeggiator External	Sequencer	Sequencer Memory	Sequencer External	Continuous	Program Change
no	N/A	no	N/A	N/A	Pitch-Wheel	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
Strings	analog	saw	8' 4'	no	no	LFO Pitch-Wheel	no
Organ	analog	square	1' 2' 4' 8' 16'	no	no	LFO Pitch-Wheel	no
Brass	analog	saw	4' 8' 16'	no	no	LFO Pitch-Wheel	no

Filter

Name	Signal Class	IC	Resonant	Shape	Frequency Modulator	Resonance Modulator	Shape Modulator
String	analog	discrete	yes	low\|band\|high pass	LFO	no	no
Organ	analog	discrete	no	12dB low pass	no	no	no
VCF	analog	discrete	yes	24dB low pass	LFO	no	no

Envelope

Name	Level	Rate	Loop	Polarity	Trigger	Level Modulator	Rate Modulator
VCF-EG	sustain	attack decay/release	no	no	no	no	no
VCA-EG	-	attack release	no	no	no	no	no

LFO

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

Further Information:

: http://syntaur.com/moog_parts.html

References:

Manuals: http://www.analoghell.com/

Conventional Models

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