The Three.2 features a 24dB/Octave crossover which acts as a high pass on the front and rear channels, and a low pass for the subwoofer channel. Jumpers inside the Three.2 allow you to bypass the crossover, sending a full range signal to the front and rears, but maintaining a low pass filter on the sub output.
From factory, the crossover module is set at 90Hz, and can be changed by purchasing a 24dB PFM module from our website here: https://www.audiocontrol.com/product/crossover-pfm-modules/