Crumar Bit One
Bit One (image courtesy of SoundDoctorin )
Released: 1984
MSRP: ?
Synopsis:
Typical hybrid (digitally controlled oscillators, analog filter and amplifier) subtractive synth with dual LFO's.
Architecture Class: Conventional (subtractive).
Ebay Description:
The Crumar Bit One is a 61 key (velocity sensitive), 6 voice, bi-timbral digital/analog hybrid synthesizer, featuring dual oscillators, 24dB resonant low pass filter, dedicated VCF and VCA ADSR envelopes, dual LFOs, and MIDI.
Physical
Form Factor
Dimensions
Weight
Audio Input
Audio Output
Communication Port
Control Input
Control Output
Switch Input
Power
61 keys
?
?
no
upper
lower
MIDI: IN OUT THRU
tape
no
trigger
sustain
AC
Interface
Compatibility
Multitimbral Memory
Program Memory
External Storage
External Programming
UI Input
UI Output
-
no
63
tape
no
parameter based
LED displays
Architecture
Multitimbral
Polyphony
Unison
Architecture
2
6
no
DCO1+DCO2->VCF->VCA
Output
Effects
Pan Modulator
Volume Modulator
Headphone
none
no
EG2
LFO1
LFO2
velocity
yes
Control
Arpeggiator
Arpeggiator External
Sequencer
Sequencer Memory
Sequencer External
Continuous
Program Change
no
N/A
no
N/A
N/A
Mod-Wheel
Pitch-Wheel
no
Keyboard
Key Pressure
Chord Memory
External Control
External Sustain
Key Scaling
Velocity Curves
no
no
MIDI
pedal
1
1
Source
Name
Signal Class
Waveform
Octave Range
Amplitude Modulator
Harmonics Modulator
Pitch Modulator
Wave Assign Modulator
DCO1
digital
pulse
saw
triangle
(individually
selected)
4'
8'
16'
32'
no
PWM:velocity
EG2
LFO1
LFO2
Pitch-Wheel
no
DCO1
digital
pulse
saw
triangle
(individually
selected)
4'
8'
16'
32'
no
PWM:velocity
EG2
LFO1
LFO2
Pitch-Wheel
no
Noise
analog
noise
-
no
no
no
no
Filter
Name
Signal Class
IC
Resonant
Shape
Frequency Modulator
Resonance Modulator
Shape Modulator
VCF
analog
CEM3328
yes
24dB low pass
EG2
key
LFO1
LFO2
no
no
Envelope
Name
Level
Rate
Loop
Polarity
Trigger
Level Modulator
Rate Modulator
EG1
sustain
attack
decay
release
no
VCF
key
velocity
velocity:attack
EG2
sustain
attack
decay
release
no
no
key
no
velocity:attack
LFO
Name
Waveform
Delay
Polarity
Sync
Delay Modulator
Level Modulator
Rate Modulator
LFO1
up-saw
square
triangle
yes
no
no
no
Mod-Wheel
velocity
LFO2
down-saw
square
triangle
yes
no
no
no
Mod-Wheel
velocity
