Serge Modular Resonant EQ Mk II

5.0 (2)

1 Review

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Page last updated Aug 10, 2025

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Description

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Discover the Serge Modular Resonant EQ Mk II, a versatile and sophisticated addition to any modular synthesizer setup. Known for its rich sound sculpting capabilities, this module offers a unique approach to equalization, providing musicians with unparalleled control over their sonic landscape. Originally designed by Serge Tcherepnin, the Resonant EQ Mk II carries forward the legacy of innovative sound design.

This module stands out due to its distinctive filter bank design, which allows for precise frequency manipulation across 10 bands. Each band is equipped with resonant filters that can emphasize or attenuate specific frequencies, making it an essential tool for crafting intricate sound textures or performing corrective EQ tasks. The Resonant EQ Mk II is ideal for live performances, studio recordings, or experimental sound design, offering flexibility and creativity in a compact format.

The module's intuitive interface and robust build make it a reliable component for musicians who demand precision and durability. Whether you're shaping the tonal character of a synth patch or fine-tuning a live setup, the Serge Modular Resonant EQ Mk II delivers exceptional audio fidelity and creative potential.

Key Features:

10-band resonant filter bank for detailed frequency control
Individual control over each band for precise sound shaping
Designed by renowned synth pioneer Serge Tcherepnin
Ideal for both corrective EQ and creative sound design
Suitable for live performance and studio applications
Compact design integrates seamlessly with existing modular setups

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Wired Brain

Patch from Scratch - Serge Resonant Equalizer Mk2 multiple outputs percussions (no talking)

Wired Brain

Sculpting a Drone with the Serge Resonant EQ

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Owner Insights

We analyzed real musician discussions from forums and Reddit to find what players love, question, and tweak about Serge Modular Resonant EQ Mk II.

Setup and maintenance

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The resistors in the Serge Modular Resonant EQ Mk II act as fuses, burning up during overload to protect other components, indicating a short circuit issue.
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Reverse power protection is achieved through resistors, but using diodes like 1N4001 is suggested as a more reliable method.
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User experience

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Owners have noted the potential for power cable orientation issues due to the lack of keying in Eurorack standards, which may cause reverse polarity damage.
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Random Source offers repair services, occasionally without charge, even for DIY builds, highlighting their customer support quality.
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Achieving consistent wooden instrument timbres with the Serge Resonant EQ Mk II remains challenging, as users continue experimenting with input and settings combinations.
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Build quality

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Ferrite beads used in DIY versions may not provide sufficient circuit protection compared to resistors or fuses.
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Features and functionality

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The bands on the Serge Modular Resonant EQ Mk II influence each other, allowing for feedback manipulation to create timbres reminiscent of wooden instruments.
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Use cases and applications

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Short bursts of intense input are more effective than prolonged ones for exciting the filter bands and achieving desirable timbres.
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Comparisons

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The Serge Resonant EQ Mk II's capability to simulate physical modeling is likened to Mutable Instruments' Rings, yet offers distinct differences in sound.
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5.0 out of 5

Based on 1 Review and 2 Ratings

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simfonik

2532

about 11 years ago

My Favorite EQ

This is a DIY module based on the Serge Resonant EQ. This particular build uses a CGS 202 PCB, a daughter board from Negativespace, and a panel designed by Clarke Robinson. It's an expanded version of an earlier design, adding individual outputs for each frequency.

It's a fantastic module and a relatively easy and incredibly fun DIY project. I completed my first one after building just a few other projects and the hardest part of it all was sourcing some of the components. I built mine using OP275 op amps and polystyrene caps (some values are hard to find) in the signal path.

I mostly use this for processing drums and creating feedback loops. The sound of this module is incredible.