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Calibrates the Digital-to-Analog Converter section of the OB-X control board.
Calibrates the pitch bend circuit on the OB-X control board.
Procedure for replacing a voice card and setting initial controls before calibration.
Tunes the filter's initial frequency to match the reference voice.
Calibrates the filter's pitch tracking across the keyboard.
Verifies and calibrates critical voltage outputs from the OB-X power supply board.
Addresses unstable keyboard control voltages due to oscillating 3240 circuits and provides a modification.
Calibrates the Digital-to-Analog Converter section of the OB-X control board.
Calibrates the pitch bend circuit on the OB-X control board.
Procedure for replacing a voice card and setting initial controls before calibration.
Tunes the filter's initial frequency to match the reference voice.
Calibrates the filter's pitch tracking across the keyboard.
Verifies and calibrates critical voltage outputs from the OB-X power supply board.
Addresses unstable keyboard control voltages due to oscillating 3240 circuits and provides a modification.
General| Synthesis Type | Analog |
|---|---|
| Polyphony | 4, 6, or 8 voices |
| Oscillators per Voice | 2 |
| Year Released | 1979 |
| Waveforms | Sawtooth, Pulse |
| LFO | 1 LFO |
| Keyboard | 61 keys |
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