- Activate SET-UP module.
- Key in 23 (SPECIAL) then 18 (Swap Sound).
- Press Play button for original sound.
- Press Play button for new sound.
- Press YES to confirm.
Source: SP-12 — e-mu-sp-12-user-guide (manual)
Symptoms this guide addresses
Source: SP-12 — e-mu-sp-12-user-guide (manual)