Oberheim OB-Xa w/ encore MIDI: MIDI CC, NRPN and OSC map¶
The Oberheim OB-Xa w/ encore MIDI as named OSC addresses — 37 CC, 1 SysEx commands — ready to use from Claude (MCP), SuperCollider, Sonic Pi, TouchDesigner or any OSC app via osc-bridge.
| Device | Oberheim OB-Xa w/ encore MIDI |
|---|---|
| Vendor | Oberheim |
| OSC prefix | /ob_xa_w_encore_midi |
| Source | 🎛️ Derived from an Electra One community preset |
| Revision | per Electra preset |
| Upstream | electra-preset |
| Driver file | devices/oberheim/ob_xa_w_encore_midi.json |
Not tested on the device yet
This driver comes from documentation or community data and has not been checked on real hardware. If you own one, a quick test and a pull request promoting it helps everyone — see CONTRIBUTING.
How do you control it?¶
Find the MIDI ports, then start the bridge with this driver:
osc-bridge detect # prints the ready-to-run line for what is plugged in
osc-bridge run --device devices/oberheim/ob_xa_w_encore_midi.json --out-port <N> --in-port <M>
Then send OSC to 127.0.0.1:7777, for example:
From Claude or any MCP client, the osc-bridge mcp server exposes this driver as ob_xa_w_encore_midi: ask “what can the Oberheim OB-Xa w/ encore MIDI do?” and it reads this map with list_routes. See the MCP guide.
MIDI CC and NRPN parameters (37)¶
| OSC address | CC | NRPN (MSB/LSB) | Range | Nature | Section |
|---|---|---|---|---|---|
/ob_xa_w_encore_midi/osc_1_wave |
102 | 0–127 | continuous | ||
/ob_xa_w_encore_midi/osc_1_freq |
28 | 0–127 | continuous | ||
/ob_xa_w_encore_midi/osc_pw |
19 | 0–127 | continuous | ||
/ob_xa_w_encore_midi/osc_1_sync |
104 | 0–127 | continuous | ||
/ob_xa_w_encore_midi/lfo_rate |
80 | 0–127 | continuous | ||
/ob_xa_w_encore_midi/lfo_wave |
88 | 0–127 | continuous | ||
/ob_xa_w_encore_midi/osc_2_wave |
106 | 0–127 | continuous | ||
/ob_xa_w_encore_midi/osc_2_freq |
29 | 0–127 | continuous | ||
/ob_xa_w_encore_midi/osc_2_detune |
30 | 0–127 | continuous | ||
/ob_xa_w_encore_midi/osc_2_filt_env |
105 | 0–127 | continuous | ||
/ob_xa_w_encore_midi/lfo_depth |
1 | 0–127 | continuous | ||
/ob_xa_w_encore_midi/lfo_depth |
81 | 0–127 | continuous | ||
/ob_xa_w_encore_midi/vcf_cutoff |
16 | 0–127 | continuous | ||
/ob_xa_w_encore_midi/vcf_resonance |
17 | 0–127 | continuous | ||
/ob_xa_w_encore_midi/vcf_modulation |
18 | 0–127 | continuous | ||
/ob_xa_w_encore_midi/filter_track |
113 | 0–127 | continuous | ||
/ob_xa_w_encore_midi/osc_1 |
85 | 0–127 | continuous | ||
/ob_xa_w_encore_midi/osc_1 |
82 | 0–127 | continuous | ||
/ob_xa_w_encore_midi/osc_1_on_off |
108 | 0–127 | continuous | ||
/ob_xa_w_encore_midi/osc_2_on_off |
109 | 0–127 | continuous | ||
/ob_xa_w_encore_midi/noise_on_off |
111 | 0–127 | continuous | ||
/ob_xa_w_encore_midi/filter_4_pole |
112 | 0–127 | continuous | ||
/ob_xa_w_encore_midi/osc_2 |
86 | 0–127 | continuous | ||
/ob_xa_w_encore_midi/osc_2 |
83 | 0–127 | continuous | ||
/ob_xa_w_encore_midi/vcf_attack |
20 | 0–127 | continuous | ||
/ob_xa_w_encore_midi/vcf_attack |
21 | 0–127 | continuous | ||
/ob_xa_w_encore_midi/vcf_attack |
22 | 0–127 | continuous | ||
/ob_xa_w_encore_midi/vcf_attack |
23 | 0–127 | continuous | ||
/ob_xa_w_encore_midi/filter |
87 | 0–127 | continuous | ||
/ob_xa_w_encore_midi/vca_attack |
24 | 0–127 | continuous | ||
/ob_xa_w_encore_midi/vca_attack |
25 | 0–127 | continuous | ||
/ob_xa_w_encore_midi/vca_attack |
26 | 0–127 | continuous | ||
/ob_xa_w_encore_midi/vca_attack |
27 | 0–127 | continuous | ||
/ob_xa_w_encore_midi/portamento |
5 | 0–127 | continuous | ||
/ob_xa_w_encore_midi/unison |
114 | 0–127 | continuous | ||
/ob_xa_w_encore_midi/split_double |
89 | 0–127 | continuous | ||
/ob_xa_w_encore_midi/upper_lower |
90 | 0–127 | continuous |
SysEx commands (1)¶
| OSC address | Arguments |
|---|---|
/ob_xa_w_encore_midi/tune |
val: u7 |
Performance MIDI¶
Notes, pitch bend and any CC are also available: /ob_xa_w_encore_midi/note/on <note> <velocity>, /ob_xa_w_encore_midi/cc/<number> <value>, /ob_xa_w_encore_midi/pitchbend <0-16383>, /ob_xa_w_encore_midi/program_change <n>.
Limitations¶
Imported from an Electra One community preset. The mapping reflects the preset author's editorial choices: parameter naming, ranges, and which params are exposed. Untested on hardware in this repo.