Oberheim magicBox MIDI implementation

Reference for the all-in-one magicBox supporting OB-SX, OB-X and OB-Xa. Earlier model-specific versions use different controller assignments; use their matching manuals and setup files.

Standard controls

Message / parameter	Value / function
ProgramChange	0...111
ChannelPressure	0...127
NoteOn	24...84
NoteOff	24...84
Pitch	±2 Semitones
Modulation cc 01	0...127
Portamento cc 05	0...127
AllNotesOff cc 123	0

Global controls on MIDI channel 16

Message / parameter	Value / function
cc 77 MOD Wheel AMT	0...127
cc 79 Keyboard Mode	0...1 Memory, Cycle (polyphonic voice allocation)
cc 89 Number of Voices	1...8
cc 90 MIDI RX-Channel	1...16 (0 = Omni)
cc 114 Device Select	1 ... 3 (1 = OB-SX, 2 = OB-X, 3 = OB-Xa) don't forget to confirm with cc#115
cc 115 Device Change	127 (changes the selected device and makes it permanent)

Global controls channel independent

Message / parameter	Value / function
cc 78 Parameter Feedback Request. (used by OSC)	—
cc 85 Select Preset	1...56 (read only)
cc 86 Select Program	1...56 (read/write)
cc 87 LOAD	Preset
cc 88 SAVE	Program
cc 107 DUMP	SysEx

OB-SX, OB-X, OB-Xa Rotary parameters

Message / parameter	Value / function
cc 06 VCF_ATK	0...127
cc 07 VCA_ATK	0...127
cc 08 VCF_DCY	0...127
cc 09 VCA_REL	0...127
cc 10 VCF_FREQ	0...127
cc 11 OSC2_DET	0...127
cc 12 LFO_FREQ	0...127
cc 13 PORTAMTO	0...127
cc 14 VCA_DCY	0...127
cc 15 VCF_SUS	0...127
cc 16 VCA_SUS	0...127
cc 17 VCF_REL	0...127
cc 18 RESONANCE	127...0
cc 19 VCF_ADSR	0...127
cc 20 PLS_WDTH	0...127
cc 21 MOD	0...127
cc 22 PW_MOD	0...127
cc 23 OSC2_FRQ	0...127
cc 24 OSC1_FRQ	0...127

Switch parameters

Message / parameter	Value / function
cc 25 Switch Group 1	—
cc 26 Switch Group 2	—
cc 27 Switch Group 3	—

A dash means no value is specified in this chart.

BCR2000 setup instructions · BCR2000 details (PDF)