Flame - Black Filterbank

Analog Filterbank Sequencer

In short, the Euro Rack module is an analog 12-channel 24dB filter bank with a digital control for each filter band and an integrated analog stereo overdrive for distorting the input signals. A modulation sequencer allows the rhythmic modulation of each individual band. It can be synchronized with an external clock (16ths) either via MIDI clock or via analog clock and reset inputs.

There are 99 memory locations with pre-programmed patterns available, into which you can also load your own sequences of up to four bars via SYSEX. The patterns are selected either directly on the module using a button, via MIDI program change or via CV input. The filter channels can also be played separately with velocity sensitivity using MIDI notes. Using the “Curves” editor (PC or MAC version), the patterns can be edited and loaded into the module, and the necessary MIDI settings (e.g. receive MIDI channel and note numbers for the filter channels) can be made. The sequencer is a MIDI sequencer with tick resolution with settings for gate time, velocity, track last step and 16th note shuffle.

The filter channels are distributed in the stereo panorama across the left/right channels and can be operated separately in stereo or together in mono. Two inputs for left (mono)/right, as well as individual outputs for stereo and a mono sum channel are available for this. The stereo and mono audio path is completely controlled via the gain, dry-wet mix controls and main out controls. The volume of each filter channel can be controlled with a fader (passive attenuator). The LED in the fader signals the VCA control.

The firmware and pattern structure are compatible with the previous module “CURVES”. In comparison, however, the new module is more compact because the separate individual outputs and CV inputs of the bands have been dispensed with. The drywet channel is now completely in stereo and an analog stereo overdrive (type OCD with germanium diodes) can be switched on if required, which allows for more sound options. The distribution of the bands in the stereo panorama has also been adjusted: both bass channels are now centered and all other left/right channels have been moved slightly towards the middle.