The most tactile energy is perceived around 100hz + or - centred in the mid bass region.

The LFE channel is mixed up to 120hz in soundtracks AFAIK. The crossover setting is only a low pass from the other channels to sub -not a high pass from LFE to mains. The discrete LFE channel uses a greater range of the subwoofers with multichannel content. Mid bass galore.