Korg / Synthesizer
Korg Prophecy
Get the original Korg Prophecy working with your sequencer: MIDI clock, silent keys, doubled notes, patch changes and SysEx, with Korg sources.
Manufacturer documented Original hardware keyboard, not the KORG Collection software instrument.
Published by MIDIrock.xyz · About Pete and the site · Page updated
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At a glance
MIDI quick reference
- MIDI connection
- MIDI IN and MIDI OUT
- Manufacturer documented
- Global MIDI channel
- 1–16, set in GLB-8 [MIDI]
- Manufacturer documented
- Arpeggiator clock
- Internal or external MIDI Clock, selected in GLB-8 [MIDI]
- Manufacturer documented
- Local Control
- On or off in GLB-8 [MIDI]
- Manufacturer documented
- Program Change
- Separate transmit and receive switches in GLB-12; configurable program and bank maps
- Manufacturer documented
- System Exclusive
- Receive filter in GLB-15; data dump formats documented in the MIDI implementation
- Manufacturer documented
Answer first
Common problems
Manufacturer documented
Prophecy arpeggiator won't sync to external MIDI clock
The arpeggiator runs at its own speed or does not start with your external clock.Manufacturer documented
Prophecy keyboard makes no sound after a MIDI setup
The keys still transmit MIDI, but the Prophecy itself is silent.Manufacturer documented
Prophecy notes trigger twice with a sequencer
A sequencer returns the same notes you play to the Prophecy.Manufacturer documented
Prophecy is not responding to incoming MIDI notes
An external keyboard or sequencer sends notes, but the Prophecy does not play.Manufacturer documented
Prophecy ignores Program Change messages
A sequencer sends a patch change but the expected program is not selected.Manufacturer documented
Prophecy does not receive SysEx data
An editor or librarian sends System Exclusive data that the Prophecy ignores.
Prophecy arpeggiator won't sync to external MIDI clock
The arpeggiator runs at its own speed or does not start with your external clock.Manufacturer documented
Prophecy keyboard makes no sound after a MIDI setup
The keys still transmit MIDI, but the Prophecy itself is silent.Manufacturer documented
Prophecy notes trigger twice with a sequencer
A sequencer returns the same notes you play to the Prophecy.Manufacturer documented
Prophecy is not responding to incoming MIDI notes
An external keyboard or sequencer sends notes, but the Prophecy does not play.Manufacturer documented
Prophecy ignores Program Change messages
A sequencer sends a patch change but the expected program is not selected.Manufacturer documented
Prophecy does not receive SysEx data
An editor or librarian sends System Exclusive data that the Prophecy ignores.
Wiring
Connection plans
Needs physical verification
Korg minilogue → Korg Prophecy
Clock the Prophecy arpeggiator from the minilogue
View the planNeeds physical verification
Korg Prophecy → Korg minilogue
Clock minilogue tempo-based functions from the Prophecy
View the planNeeds physical verification
Roland TR-8S → Korg Prophecy
Clock the Prophecy arpeggiator from the TR-8S
View the planOfficial resources
Manuals & resources
References
Sources & review
Sources reviewed: . Documentation does not replace a physical hardware test.
- Prophecy Parameter Guide · Korg · last checked 2026-09-26 · Open PDF
Sections reviewed: GLB-18, p. 147; GLB-8, p. 139; GLB-12–14, pp. 143–144; GLB-15, p. 144; MIDI implementation, pp. 164–170; GLB-12–15, pp. 143–144; GLB-18, pp. 146–148.