Cerwin Vega Pro Ab-36B 18-Inch Afterburner Folded Horn Bass System 18" folded horn bass system Perfect for PA/playback/disco Heat sink design provides increased thermal power Handling with decreased power compression 106 db sensitivity @ 1 watt/1 meter Use with any Cerwin-Vega full range system to optimize extended bass response Universal pole mount New cabinet and caster design for easy mobility The AB-36B is a highly advanced design that incorporates Cerwin-Vega's 50 years of experience in building some of the industry's best known subwoofers Its design makes it ideal for use in the most demanding environments where pure bass power is the goal Among the long list of new features is a signature front panel design that acts as a convection heat sink designed to provide greatly increased thermal power handling with decreased power consumption, a new 4" diameter voice coil, a new and contemporary cabinet and caster design, and a universal pole mount The AB-36B is a highly advanced design that incorporates Cerwin-Vega's 50 years of experience in building some of the industry's best known subwoofers