site maker

Crumar Stratus

Polyphonic and organ synthesizer (1982)

Crumar

"Italian vintage synthesizer -organ, a simpler version of famous Crumar Trilogy removing string section and memory " 

 Main Data 

Crumar



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

Scegli tra la vasta selezione di blocchi già pronti più recenti: intro a tutto schermo, caroselli immagini di bootstrap, Slider dei contenuti, galleria di immagini responsive con lightbox, parallax-scrolling, sfondi video, menu hamburger, intestazioni fisse e altro ancora.

 Crumar Stratus In details 

Crumar Stratus

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.

Multitimbric

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

Organ

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.

Synthesizer

A 6 voices, 2 syncable DCO per voice with LFO, Envelope and filter.  See below for more details:

IC

The machine if full of precious IC: 6x CEM3310 EG, 6x CEM3320 VCF, 6x CEM3330 Dual VCA, 1x SSM2020 VCA, 1x SSM2055.

Crumar stratus

Synth section LFO / EG / FILTER

Filter

FILTER 

VCF with cutoff, Q (resonance) controlled by Envelope. It is possible to controll VCF using an external pedal.

LFo

LFO

1 single delayed modulator (2 shapes; triangle or square)   with variable depth  and slope.
It modulates either VCF / VCA / DCO

Envelope

Envelope

1 ADSR 4 segments EG 

Our Verdict 

"Classic synth, may need technical care. Organ section is quite useless. Growing up prices as vintage item" 

Sound 
quality

Interface

Build
 quality

Rarity

Quality / 
price

Overall

CONS

- Organ
- technically needs care
- limited

PROS

-vintage
- analog
- full of cem and SSM

Are you a STRATUS user? do you like it? You do not agree with our review?  Let us know in the comment field just below 

DISQUS COMMENTS WILL BE SHOWN ONLY WHEN YOUR SITE IS ONLINE

SHARE

Audio demo and video 

Crumar Stratus Crumar Stratus
72 out of 100 based on 1 user ratings
300 to 700 from 1 sellers Sellers: