ESC
OB-8

OB-8

ManufacturerOberheim
FunctionSynthesizer
Produced1983-1985
Form FactorKeyboard
Dimensions101.6 x 50.8 x 15.24 cm
Weight17.2 kg
Power95 -240 Volts AC, 50i60 Hz, 45 Watts
CEM3340x16 (Curtis chip (IC) VCO (Saw,Tri,Pulse))
CEM3320x8 (Curtis chip (IC) 24 dB/Oct. VCF multimode filter)
CEM3310x16 (Curtis chip (IC) ENV ADSR)
CEM3360x2 (Curtis chip (IC) VCA x2)
Channels8 Voice
LinksService Schematics 1st ed · Service Manual at newenglandanalog · Owners Manual at grahamenglish
NotesPolyphony - 8 voices Oscillators - 2 vco's per voice: saw, pulse, triangle Memory - 120 patch programs, 12 split programs, and 12 double programs; external cassette storage; MIDI SysEx data dump Filter - Switchable 2-pole or 4-pole VCF w/ ADSR LFO - Triangle, Square, Ramp, Samp+Hold Keyboard - 61 keys (can be split or doubled); no velocity or aftertouch Arpeg/Seq - 8-note arpeggiator with external sync source Control - MIDI (Channels 1-9) Could be added as a retro-fit. On later revisions it was installed from the factory. Date Produced - 1983 - 1985