Subwoofers are essential when watching films on big screens. For instance, in modern cinemas, subwoofers reproduce the low frequency sound effects like spaceship engines, bomb explosions or footsteps of dinosaurs. These subwoofers are high power and large in size capable of deep, impactful bass that fills a large auditorium. Quite often, subwoofers are installed in multiple locations throughout the cinema to ensure that sound distribution is as uniform as possible. Cinema subwoofers, however, are also tuned with other speakers in the sound system for perfect synergy. This cross over from subwoofer to midrange speaker achieves a seamless blend of high, mid, and low frequency supporting the truly comprehensive audio experience.