subwoofer is a showcase in the use and adaptation of extremely advanced technology. it simplifies the choice for the serious bass enthusiast. It is no longer necessary to decide whether the subwoofer should be an SPL or SQL design. it provides high SPL while remaining fast, accurate, and musical. Innovative technologies and a revolutionary machining process are key elements of the it design enabling Earthquake to produce a subwoofer capable of thunderous deep bass with speed, precision, and articulation. The sound will satisfy your craving for that earth shattering bass.