The ContraBass unit features extended low-frequency range of 16Hz to 125 Hz filling the increasing demand for an accurate extended-range, low frequency response subwoofer with high acoustic output and compact size. Applications range from cinema sound, home theater, live sound applications, theatrical sound, clubs, discos, and for live and recorded music - just about anywhere low frequency sound enhances performance or supplies crowd excitement. In addition, they are extensively used in scientific research.