Always consult the official Owners Manuals first

Crossover block

From Fractal Audio Wiki
Jump to navigation Jump to search

Available on which products

  • Axe-Fx III: 2 blocks
  • FM9: 1 block
  • FM3: no
  • Axe-Fx II: 2 blocks
  • FX8, AX8: no

Channels or X/Y

  • Axe-Fx III, FM9: 2 channels
  • Axe-Fx II: no

What is a crossover

The Crossover block models an electronic crossover. A crossover splits the audio signal into frequency ranges, to be processed or amplified separately.

More these pages for more information:

Crossover block diagram

Crossover block.PNG

Tips, tricks and troubleshooting

No Global blocks

The Crossover block doesn't support Global blocks.


Some bass/guitar players split their signal in highs and lows, and send them through different amplifiers. This can be accomplished with the Crossover block. The factory preset PLEXI BI-AMP (Axe-Fx series only) demonstrates this. Or check Leon Todd’s video tutorial: 5 Minute Tones - Distorted Bass

Alternative approach for the FM3

There's no Crossover block in the FM3. Filters can be used to achieve something similar. See the POLYFUZZ CROSSOVER FM3 factory preset for an example.

Recreate the Flint tremolo sound

This forum thread discusses the use of the Crossover block to create a so-called Flint emulation: The Flint Tremolo Done Right