Flux Pro £50
Can an affordable plugin deliver compelling multi effects? This latest offering from Caelum Audio could be the one
If you’ve used our very own Flux Mini CM plugin (update free with this issue!) then you’ll already be pretty familiar with Caelum Audio’s graph-based modulation system. It gets a big upgrade with their latest plugin, Flux Pro (VST3, AU, AAX and iOS). It’s a new multi-effects modulation plugin with ten modulation effects spread across four effects slots. There are three user configurable and editable modulation curves (A, B and C), a bank of 48 drag-and-drop preset curve shapes and a slick new interface with frequency analyser. You’ve also got 115 categorised presets to get you started.
Further features include control voltage graph output to send to external hardware and MIDI CC output of the graph data to control other plugins, although as ever with internal MIDI communication, features are somewhat
DAW dependent.
Flux Pro has a typical array of effects including two filters, two delays, phaser, chorus/ flanger, width and ring modulation. You’ve also got a utility module that includes pan and gain. The interface displays two of the four modules at any one time, and they can be reordered to taste using drag and drop. Below each module parameter you’ll find a modulation depth slider (+/-100%) and this will apply whichever curve
(A, B or C) is selected in the bottom left-hand corner. All three curves can control each parameter concurrently and adding modulation depth also creates colour-coded halos around the parameter knob. It’s a really simple and clear scheme, and means you can easily glean which parameters are being controlled and by which curve.
The edit
Flux Pro’s 48 preset modulation curves cover lots of ground and, with both tempo sync and free frequency options, you may not feel the need to actually edit these curves at all. However, Flux Pro has powerful features to edit and also save your own curves, and this is extremely well implemented. Simply dive in using your cursor to make changes, doubleclicking to add nodes. There’s also an adjustable snap grid, floating toolbar and overall graph modifier options (shorten, extend and clear) to help make the whole process as slick as possible. If you do want to save your curve simply select the User bank and click on the
‘+’ icon.
We really like the breadth of effects included. You have 20 filter styles including some flavoursome ladder types with Drive and three Formant options. Meanwhile with Glide, Feedforward and Feedback, the main Delay can conjure some tasty effects. There’s also the simpler second Delay module, which is a non feedback design with delay time mapped to one of the curves. This more focused design creates some fantastic time-bending sounds.
Meanwhile the Width effect, which augments its width option with Haas and Shuffle parameters, is also great for both subtle and extreme wobble effects. For a more destructive vibe both Ring Modulation and Rate Modulation serve up all manner of fuzz and crunch. Finally, the inclusion of a Utility module with Gain means you can also create very convincing sidechain compression effects.
Caelum are gradually building an impressive stable of plugins. Flux Pro is their most powerful to date and a fantastically creative offering. caelumaudio.com
For a more destructive vibe, Ring Modulation and Rate Modulation serve up all manner of fuzz and crunch