22485102
Alpha dial encoder knob for Roland Alpha Juno-1, Alpha Juno-2, HS-10, HS-80 and 2 more
Original part (OEM)
Not checked yet
PorkForge replacement
Not made yet
Part facts
- Original part number
- 22485102R1
- Manufacturer
- Roland
- Part type
- Knobs · Control knobs and handles
- System
- Operator controls
- Notes
- Large rotary knob for the 'alpha dial' data-entry encoder on the Alpha Juno synthesizers and related Roland models. A used-parts seller lists it under Roland catalogue number 22485102, pulled from a broken Juno-2, and an independent hobbyist cross reference lists the same number for the Alpha Juno-1, Alpha Juno-2, HS-10 and S-50. No dimensions published.
- Last reviewed
- Oct 28, 2026 · record pf-mus-00001
Dimensions How to measure this part
Fits these machines
| Model | Years | Notes | Evidence |
|---|---|---|---|
| Roland Alpha Juno-1 | Not recorded | JU-1 | Reported 1 |
| Roland Alpha Juno-2 | Not recorded | JU-2 | Reported 1 |
| Roland HS-10 | Not recorded | — | Reported 1 |
| Roland HS-80 | Not recorded | — | Reported 1 |
| Roland S-50 | Not recorded | — | Reported 1 |
| Roland JX-10 | Not recorded | The Reverb seller lists the JX-10, but the llamamusic cross reference gives 22485106 for the JX-10; see review queue. | Reported 1 |
Where to find one today
| Source | Condition | Price | Stock | Checked |
|---|---|---|---|---|
| Madisynths (Reverb) 1 | Used | $12.95 | In stock | Oct 28, 2026 |
Why it is hard to get
- Market evidence: Original part sold used, pulled from a donor instrument, which shows owners pay for originals that are not supplied new. 1
Can this part be made again?
EligiblePhysical replacement
Small plastic button or knob cap: not structural, hot, mains-insulating or safety-critical. No published dimensions; expected to fit well under 205 mm (inferred). Fine legends or LED windows may need a second process.
Candidate materials: PETG, ABS-like resin (confirmed by test-fitting).
EligibleSTL / FreeCAD file
Can be offered as a printable file and an editable FreeCAD model once the measurements are verified.
Sources
- ORIGINAL Roland Alpha Dial Encoder Knob (22485102) for Juno-1, Juno-2, HS-10, HS-80, JX-10, S-50 (Reverb listing, seller Madisynths)
- Roland synth and sampler part-number cross reference (llamamusic.com, version 20250127)
Not affiliated with or endorsed by Roland or its successors. The name is used only to identify compatibility. Part numbers are shown for reference. Check fit against your own machine. Spot a mistake?
Verification checklist (3 of 8 met)
- ✕ OEM part number not yet verified from an OEM or dealer source
- ✓ Cited by two websites, or by an OEM or dealer source
- ✓ At least one compatible model with a source
- ✕ 1 kinds of fact beyond the name (aftermarket prices); 3 needed
- ✕ Original availability not yet checked
- ✓ Text and title are distinct
- ✕ On hold: Sourced from Reverb listings through its API; Reverb's API terms are not yet checked
- ✕ Not yet reviewed and signed off for search
Related parts
| Part no. | Part | Make | Fits | Original | PorkForge | Sources |
|---|---|---|---|---|---|---|
| 22485106 | Rotary encoder knob | Roland | S-10, JX-10, D-70, MKS-20, MKS-70 +1 more | Not checked | Research only | 1 |
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| 1145832 | Drag knob | Abu Garcia | 4325S | No longer available | Research only | 1 |