← Repair Guides|Filter Tuning Procedure
Easy10 min

Filter Tuning Procedure

  1. Emphasis: Set Filter Mode to Full, Emphasis control to 10, and Volume to 10. Turn Emphasis trimpot fully CCW. Sweep Cutoff from -5 to +5. After each sweep, turn Emphasis trimpot CW until no oscillation occurs. Switch Filter Mode to Tone and sweep Cutoff to ensure it oscillates over full range.
  2. Filter Scale: Set Octave to 8'. Depress LO F and zero beat by turning Cutoff slightly. Depress and hold Middle F (F4, 350Hz) and zero beat with FILTER SCALE trimpot.
  3. Filter High Frequency: Set Octave to 2'. Depress LO F and zero beat using Cutoff. Depress Middle F and zero beat using FILTER HI trimpot.
  4. Filter Octave Step: Depress LO F and zero beat using Cutoff. Click oscillator Octave switch to 16' and adjust FILTER OCT trimpot for zero beats.

Source: Micromoog — 4cbaff59_Moog_MicroMoog_Manual (manual)