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Crumar DS-1

DS-1 (copyright 2012)

Released: 1978



Relatively typical DCO based monosynth. Architecture Class: Conventional (subtractive).

Ebay Description:

The Crumar DS 1 is a 44 key, monophonic analog synthesizer, featuring dual oscillators (with glide), 24dB resonant low pass filter, dedicated VCF and VCA ADSR envelopes, an LFO, and gate input and output.


Form Factor Dimensions Weight Audio Input Audio Output Communication Port Control Input Control Output Switch Input Power
44 keys ? ? no high low stereo no gate:5V gate:5V no AC


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


Multitimbral Polyphony Unison Architecture
1 1 no DCO1+DCO2->VCF->VCA


Effects Pan Modulator Volume Modulator Headphone
N/A no LFO VCA-EG yes


Arpeggiator Arpeggiator External Sequencer Sequencer Memory Sequencer External Continuous Program Change
no N/A no N/A N/A pitch bend paddle no


Key Pressure Chord Memory External Control External Sustain Key Scaling Velocity Curves
no no gate no 1 no


Name Signal Class Waveform Octave Range Amplitude Modulator Harmonics Modulator Pitch Modulator Wave Assign Modulator
DCO1 digital pulse saw square triangle 4' 8' 16' 32' no PWM:LFO1 PWM:LFO2 LFO glide no
DCO2 digital pulse saw square 4' 8' 16' 32' no no LFO glide no
Noise digital pink-noise white-noise - no no no no


Name Signal Class IC Resonant Shape Frequency Modulator Resonance Modulator Shape Modulator
VCF analog discrete yes 24dB low pass LFO VCF-EG no no


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


Name Waveform Delay Polarity Sync Delay Modulator Level Modulator Rate Modulator
LFO up-saw down-saw square triangle yes no no no no no
Conventional Models
Orchestrator DS-1 DS-2 Performer T1 T2 T1-C CPB-1
CPB-2 Trilogy Stratus Composer Spirit Bit One Bit01 Bit99