Crumar Stratus
Polyphonic and organ synthesizer (1982)
Polyphonic and organ synthesizer (1982)
Company: Crumar
Model: Stratus
Class: Synthesizer / organ
Keyboard: 49 non dynamic (C-C)
Type: Analog
Synthesis: Subtractive
Dates: 1982
Country: Italy
Weight: 18 Kg
Dimensions: 88 x 48 x 18,5 cm
Price: 700€
Display: none
Multitimbric: 2 parts
Polyphony: full for organ + 6 Synth voices
Oscillator: 2 DCO Sawtooth + Square
Filter: lowpass resonant
Envelope: 2 EGs
LFO: 1 delayed modulator Square + Triangle
Effect: none
Memory: 4 presets + variations
Midi: none
CV/ gate: none
Memory: none
PSU: internal
IC: 6x CEM3310 EG, 6x CEM3320 VCF, 6x CEM3330 Dual VCA, 1x SSM2020 VCA, 1x SSM2055
49 keys with no velocity, The control panel features 26 knobs + 4 horizontal sliders for the organ footages mix.
Rear panel connectors:
- outpout for organ section
- outpout for poly-synthesizer section
- Input pedal for sound release
- input pedal for filter VCF control
- switch pedal input for OSC SYNC
- No official VST plugin
- owner's manual download
- service manual and schematics DOWNLOAD
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VOICE The Stratus is analog synthesizer with 2 main sections that can be mixed with either separate ouputs or with 2 dedicated knobs on the left side:
- Organ with full polyphony and 4 drawbars footage :16', 8', 4' and 2'.
- Polysynthesizer 6 voices with 2 syncable DCO (waves: squar , saw or a mix) you can select mono mode or waveform shape alternate (weird).
TIP: Phase buttons allows to tune the voices.
2 parts: Organ and / or synthesizer can be mixed.
4 glide modes:
A. Both oscillators glide up to the target frequency
B. Only oscillator-2 glides up to the target frequency
C. Only oscillator-2 glides down to the target frequency
D. Both oscillators glide down to the target frequency
Simplest section: features 4 drawbars (square waves) that can be layered at
16', 8', 4' and 2'.
No intermediate harmonics or clicks. Not the best Hammond clone around.
A 6 voices, 2 syncable DCO per voice with LFO, Envelope and filter. See below for more details:
The machine if full of precious IC: 6x CEM3310 EG, 6x CEM3320 VCF, 6x CEM3330 Dual VCA, 1x SSM2020 VCA, 1x SSM2055.
VCF with cutoff, Q (resonance) controlled by Envelope. It is possible to controll VCF using an external pedal.
1 single delayed modulator (2 shapes; triangle or square) with variable depth and slope.
It modulates either VCF / VCA / DCO
1 ADSR 4 segments EG
- Organ
- technically needs care
- limited
-vintage
- analog
- full of cem and SSM
Crumar Stratus
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