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OB-8

Oberheim OB-8

OB-8.
OB-8

Released: 1983

MSRP: $4545US

Synopsis:

Updated OB-Xa with three LFOs Architecture Class: Conventional (subtractive).

Ebay Description:

The Oberheim OB-8 is a 61 key, 8 voice polyphonic duo-timbral analog synthesizer, featuring dual oscillators (with sync), noise generator, resonant 12dB or 24dB low pass filter (CEM3320), dual ADSR envelopes, three LFOs, 120 presets, chord memory, arpeggiator, tape and proprietary interfaces.

Physical

Form Factor Dimensions Weight Audio Input Audio Output Communication Port Control Input Control Output Switch Input Power
61 keys W:40in (101.6cm) D:20in (50.8cm) H:6in (15.24cm) 38lbs no mono stereo tape computer (proprietary) clock no sustain program+ hold AC

Interface

Compatibility Multitimbral Memory Program Memory External Storage External Programming UI Input UI Output
- split:12 layer:12 120 no computer (proprietary) MIDI (later models) knobs/buttons LED

Architecture

Multitimbral Polyphony Unison Architecture
2 8 yes VCO1+VCO2+noise->VCF->VCA

Output

Effects Pan Modulator Volume Modulator Headphone
no no LFO2 VCA-EG pedal no

Control

Arpeggiator Arpeggiator External Sequencer Sequencer Memory Sequencer External Continuous Program Change
(key or hold) up down random forward reverse transpose clock no N/A N/A BendLever ModLever filter:pedal vibrato:pedal volume:pedal pedal

Keyboard

Key Pressure Chord Memory External Control External Sustain Key Scaling Velocity Curves
no yes computer (proprietary) MIDI (later models) pedal no no

Source

Name Signal Class Waveform Octave Range Amplitude Modulator Harmonics Modulator Pitch Modulator Wave Assign Modulator
VCO1 analog triangle mix:saw/pulse +-1 no PWM:LFO2 ModLFO LFO1 portamento BendLever no
VCO2 analog triangle mix:saw/pulse +-1 no sync:VCO1 PWM:LFO2 ModLFO LFO1 VCF-EG portamento BendLever no
Noise analog noise:pink - no no no no

Filter

Name Signal Class IC Resonant Shape Frequency Modulator Resonance Modulator Shape Modulator
VCF analog CEM3320 yes 12|24dB low pass key LFO2 VCF-EG pedal no no

Envelope

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

LFO

Name Waveform Delay Polarity Sync Delay Modulator Level Modulator Rate Modulator
LFO1 saw:up saw:down square triangle random yes key no delay attack key vibrato:pedal no
LFO2 LFO1 yes key no delay attack key no
ModLFO noise saw:up saw:down square triangle random yes no no LFO2-EG ModLever no
Conventional Models
SEM TVS-1a TVS-1 FVS-1 EVS-1 OB-1 OB-X OB-SX
OB-Xa OB-8 Matrix-12 Xpander Matrix-6 Matrix-6R Matrix-1000