Phaser for Elektron Analog Rytm

A stereo phaser for the Rytm's send bus: 2 to 8 all-pass stages swept by an LFO you can square and slow.

Module version 0.1.0-experimental. Base firmware: 1.74.

About this module

PHASER 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 to eight first-order all-pass stages per side are swept around FREQ by an LFO (SPD, DEP); SHP squares the LFO, LAG slows its moves, and the right side runs WDTH out of phase. FDBK feeds the output back, positive or negative. It runs at 24 kHz. The DSP is Send FX's PHASER, unchanged.

• 2, 4, 6 or 8 stages.
• SHP and LAG turn the sweep from smooth to stepped.
• 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 PHASER.
4. Turn A to H 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 range around FREQ.

SHP

Squares the LFO, up to 8 times, towards a square wave.

LAG

Slows the LFO's moves.

FREQ

Centre frequency of the stages, up to 10 kHz.

FDBK

Feedback, -64 to +63: negative or positive.

STG

All-pass stages per side: 2, 4, 6 or 8.

WDTH

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

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 PHASER 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 PHASER (PH02).