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Bit99

Crumar Bit99

Black Bit-99
Black Bit-99
Ivory Bit-99
Ivory Bit-99

Released: 1985

MSRP: ?

Synopsis:

Swaps the Bit One Unison mode for a patch chain, slightly increases program memory, adds double/split memory, but amp EG can no longer be routed to pitch. Bit One noise and detune sliders are parameterized. Architecture Class: Conventional (subtractive).

Ebay Description:

The Crumar Bit 99 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, a patch chain, 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 program-increment AC

Interface

Compatibility Multitimbral Memory Program Memory External Storage External Programming UI Input UI Output
Bit01 Bit99 23 75 tape MIDI SysEx 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 MIDI-CC1 MIDI-Pitch Mod-Wheel Pitch-Wheel MIDI pedal

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 noise pulse saw triangle (individually selected) 4' 8' 16' 32' no PWM:velocity LFO1 LFO2 MIDI-Pitch Pitch-Wheel no
DCO2 digital pulse saw triangle (individually selected) 4' 8' 16' 32' no PWM:velocity LFO1 LFO2 MIDI-Pitch Pitch-Wheel 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 MIDI-CC1 Mod-Wheel velocity
LFO2 down-saw square triangle yes no no no MIDI-CC1 Mod-Wheel velocity
Conventional Models
Orchestrator DS-1 DS-2 Performer T1 T2 T1-C CPB-1
CPB-2 Trilogy Stratus Composer Spirit Bit One Bit01 Bit99