The SB1 with DMF is a technological marvel. By applying Digital Motional Feedback, a control technology from the renowned Dutch high-tech industry, it became possible to achieve exceptionally low levels of distortion and full dynamic control. With an SB1 added for the bass frequencies, the LS1 system offers low distortion over the full audio band and redefines the term transparency. This is bass control like youve never experienced before. Digital Motional Feedback offers bass control like youve never experienced before. At frequencies below 100 Hz loudspeaker drivers need to move a vast amount of air and therefore have high excursion levels, while also the fundamental resonance which is present in any loudspeaker induces unwanted delayed effects. The result is that all conventional loudspeakers exhibit a rising distortion in the bass region with additional thickening of the bass by the resonance.