Serge Resonant EQ (RESEQ)

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EQ FILTER RESONATOR UTILITY

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Ten-band Serge resonant equalizer with dual inputs, two identical mix outputs, two comb outputs, and switchable positive or inverted feedback.

Patch Ideas · 5

★ Formant vocal sweep
saw VCO into IN A · raise bands around the 500 Hz to 3 kHz region · drive one comb output lightly into the mix · the equalizer acts like a fixed formant bank for synthetic vowels and spoken tones.
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Patch diagramPatch diagram with 3 modules and 3 connections. Modules: ResEQ, VCO, Output. Signals: 3 audio.ResEQVCOOutputBand 1-10: sculpted for vowelsFeedback: lowIN AaudioMIX OUT 1audioMIX OUT 2audioSawaudioLaudioRaudioaudio
★ Comb stereo split
mono source into IN A and IN B via the mixer · route COMB 1 and COMB 2 to separate channels · move the band knobs as a stereo performance control rather than a static EQ.
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Patch diagramPatch diagram with 3 modules and 4 connections. Modules: ResEQ, Mixer, Output. Signals: 4 audio.ResEQMixerOutputInput A: noonInput B: noonFeedback: offIN AaudioIN BaudioCOMB 1audioCOMB 2audioOutaudioLaudioRaudioaudio
★ Resonant ping bank
short trigger burst into IN A through a VCA · bias the upper bands upward · the module rings like a tuned metallic object without needing a separate resonator.
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Patch diagramPatch diagram with 6 modules and 5 connections. Modules: ResEQ, VCO, Envelope, VCA, Trigger, Output. Signals: 3 audio, 1 cv, 1 trigger.ResEQVCOEnvelopeVCATriggerOutputBand 1-10: bright and peakedFeedback: mediumIN AaudioMIX OUT 1audioOutaudioTrigtrigOutcvCVcvInaudioOutaudioOuttrigInaudioaudiocvtrigger
Inverted feedback growl
feedback knob high · phase switch inverted · saw VCO into IN A · the spectrum hollows and folds back into itself for unstable growl and reed-like overtones.
▸ Show diagram
Patch diagramPatch diagram with 3 modules and 3 connections. Modules: ResEQ, VCO, Output. Signals: 3 audio.ResEQVCOOutputFeedback: highPhase switch: invertedIN AaudioMIX OUT 1audioMIX OUT 2audioSawaudioInaudioaudio
Spectral crossfade
VCO A into IN A and VCO B into IN B · use the band knobs as a fixed spectral crossfader between two sources · COMB outputs provide additional movement while the main outputs stay usable as a consistent stereo pair.
▸ Show diagram
Patch diagramPatch diagram with 4 modules and 4 connections. Modules: ResEQ, VCO A, VCO B, Output. Signals: 4 audio.ResEQVCO AVCO BOutputInput A: lowInput B: lowBand 1-10: wide spreadIN AaudioIN BaudioMIX OUT 1audioMIX OUT 2audioOutaudioOutaudioLaudioRaudioaudio

Behaviors

Flat-at-noon response center all band knobs

When the ten band knobs are at noon, the main EQ output is flat.

Resonant top end turn a band past 3 o'clock

Bands become noticeably resonant instead of merely boosted, which gives the module formant-like peaks.

Deeper rejection turn a band below 9 o'clock

The band moves into stronger attenuation rather than a simple gentle cut.

Comb outputs interact strongly move any frequency knob

Both Comb outputs are highly sensitive to band frequency changes, so even small knob moves reshape the sums.

Input drive and coloration raise the input attenuators

The two-input mixer can push the EQ stage into color and distortion before the band bank.

Feedback phase control use the feedback knob and phase switch

Normal feedback reinforces the current spectral shape; inverted feedback produces phase cancellation and hollowed-out resonances.

Serge-style band spacing set the bands across the panel

Most bands are spaced at major-seventh intervals, with the top and bottom bands acting as end caps.

Controls

EQ section Band 1-10 Sets the ten band gains and resonance points. Noon is flat, clockwise boosts into resonance and counterclockwise cuts more deeply.
center: flat · >3 o'clock: resonant · <9 o'clock: rejection
Input mixer Input A Sets the level of the first audio input before the EQ bank.
dedicated attenuator
Input mixer Input B Sets the level of the second audio input before the EQ bank.
dedicated attenuator
Feedback section Feedback Sets how much of the module's output is fed back into the resonant equalizer path.
internal feedback amount
Feedback section Phase switch Selects normal or inverted feedback for more surgical reinforcement or cancellation.
positive / inverted

I/O

IN · 2

  • IN A AUDIO
    First audio input to the internal two-channel mixer.
  • IN B AUDIO
    Second audio input to the internal two-channel mixer.

OUT · 4

  • MIX OUT 1
    Main equalized output, one of two identical mix outputs.
  • MIX OUT 2
    Second identical equalized output for parallel processing.
  • COMB 1
    Output that sums alternating filter bands for comb-style spectral shaping.
  • COMB 2
    Second comb output with the alternate band grouping.