FX v1.1

This software update fixes some minor bugs of the previous firmware and brings in general improvements.

Release date: April 10, 2025

Bug fixes

• Improved V/oct tracking of the internal sub oscillator;
• Significant increase in volume of the full wet signal (+3dB);

Improvements

Frozen buffer can now be pitch-shifted together with the left and right channel and it's affected by the Resonance and Backdrop controls.

Module power consumption

EXP-FX doesn't draw current directly from your system but relies on Sibilla's power; for this reason, depending on the uploaded firmware, Sibilla's power consumption will change.

Following the above fixes and improvements, Sibilla's power consumption running the FX firmware stays unchanged:

• +12V: 142mA;
• -12V: 35mA;
• +5V: 0mA;

How to update

To update your module, follow the instructions in the "EXP-FX, expanding your Sibilla" section of the Setup and programming page.

Note

If you're looking for the EXP firmware instead, please refer to te previous release.

EXP-FX v1.0 (Sibilla expander)

EXP-FX, il Sole e la Luna

Binary files of the EXP and FX firmwares for Sibilla's EXP-FX expander module.

Release date

Nov 15, 2024

About

EXP, il Sole

Expand your Sibilla by adding more control on the internal AR envelope and filter resonant frequency.
With the help of this firmware, Sibilla's controls stay untouched and the following EXP commands are added:

• ATTACK: sets the duration of the envelope attack stage. This is the time it takes for the envelope level to go from zero to the maximum level when a gate signal is received on Sibilla’s trigger input. The duration is nearly zero with the knob fully closed, and 5 seconds when the knob is fully clockwise;
• RELEASE: sets the duration of the envelope release stage. This is the time it takes for the envelope to go from its maximum level back to 0 after the gate is released (max length is 5 seconds);
• Q: sets the peak level of Sibilla’s resonant LP filter (Resonance). When fully counterclockwise, resonant peak will be rounded and become more apparent with higher settings, depending on the harmonics created by Rise and Fall parameters of Sibilla.

FX, la Luna

With configurable eurorack/line stereo inputs, turns the whole duo (FX + Sibilla) into an intricate stereo pitch shifting delay droning effect. Splits your incoming sound in two separate pitch shifted tracks whose stereophony is affected by LFOs movements, white noise, delay lines and sampled bits of audio.

When installing this firmware, Sibilla's parameters perform the same functionalities as always, but applied to the incoming input audio signals:

• RISE: pitch-shifts (from low to high pitch) the incoming sound on the left channel;
• FALL: pitch-shifts (from high to low pitch) the incoming sound on the right channel;

As for Sibilla, the stereophony of these pitch-shifted tracks is affected by the movement of two free running LFOs with configurable waveforms and can be altered by a resonant LPF and the addition of a white noise source.

In addition, Sibilla's sampling delay network is now open and can be directly modified by the user:

• BUFFER SIZE: controls the real time sampling window length. It’s nearly 100ms when the knob is fully closed and goes up to 1s with the knob fully clockwise;
• FEEDBACK: controls the amount of sampled and pitch shifted audio sent back into the sampler;
• FREEZE: manually freezes the audio buffer to the last recorded bit of audio. While freezed, the buffer size can still be modified;
• GRAINS: sets the starting position of the audio bits to be recorded into the buffer size (this feature still needs to be activated with a double tap on Sibilla's center button);

A small switch on the back of the module is used to shift between Eurorack and Line input signal. When Line inputs are configured, the Line Gain knob can be used to tame the incoming audio signal.

Demo

Watch the complete video manual here: https://youtu.be/Ak7bAQry2VU
Learn how to program your Sibilla to use it with EXP-FX: https://youtu.be/G4hA7FitUPQ

Power consumption

EXP-FX doesn't draw current directly from your system but relies on Sibilla's power; for this reason, depending on the uploaded firmware, Sibilla's power consumption will change as follows:

EXP	FX
+12V: 140mA	+12V: 142mA
-12V: 33mA	-12V: 35mA
+5V: 0mA	+5V: 0mA

How to

To update your module, follow the instructions in the Setup and programming section.