Chorus for Elektron Analog Rytm

A stereo chorus for the Rytm's send bus: two swept taps, the right side out of phase, with feedback and its own high- and low-pass.

Module version 0.1.0-experimental. Base firmware: 1.74.

About this module

CHORUS is one effect in the Modwerk base's send-effect list. Each track sends to it from its SEND page, and it returns in stereo to the mix. Two delay taps of 1 to 30 ms are swept by one LFO, the right one out of phase by WDTH; FDBK feeds the line back, and a one-pole high-pass and low-pass shape the wet sound. It runs at 24 kHz. The DSP is Send FX's CHORUS, unchanged.

• Stereo from one LFO: WDTH turns the right side out of phase.
• FDBK, HPF and LPF shape the wet sound only.
• Every control can be locked on the FX track.

How to use it

1. Install the module with the Modwerk base; the base carries the send bus, its pages and the effect list.
2. On a sound track, press AMP twice to open SEND and turn A to send the track.
3. Select the FX track and press DELAY twice to open SEND FX; hold FUNC and turn A to choose CHORUS.
4. Turn A to G to shape it, hold FUNC and turn E for the return level LEV, and hold FUNC to read the CPU.

Controls

SPD

LFO speed, 0.01 to 5 Hz.

DEP

Sweep depth, up to 5.3 ms, kept below TIME.

TIME

Delay of the taps, 1 to 30 ms.

WDTH

Phase of the right side's LFO: 0 sweeps both sides together, 127 in opposition.

FDBK

Feedback of the line, 0 to 85 %.

HPF

One-pole high-pass on the wet sound; 0 is off.

LPF

One-pole low-pass on the wet sound; 127 is open.

Compatibility notes

• Needs the Modwerk Analog Rytm MKII base with the send bus (the FX list mw_fx); the library offers it only once the site builds with that base.
• One send effect plays at a time: the one chosen on SEND FX.
• The kit keeps the chosen effect and its eight values; Send FX settings saved under MD07 builds are not read.
• A project that chose this effect plays no return and shows MISSING when the effect is not installed, and keeps its values.

Test evidence

Host: the same samples as Send FX's CHORUS over 20,000 blocks of random settings. Unit: test build MB02 reported working by the author (29 Oct 2026). rytm-emu 2ac0f1f: the SEND and SEND FX pages with CHORUS (CH02).