The model SP212-A is a true, full range system that provides unprecedented bandwidth and maximum SPL in a single system package. With nominal 85° coverage pattern, systems can be splayed together for additional coverage and/or SPL requirements. The powerful 12" VGC (Vented Gap CooledTM) LF transducer provides powerful transient bass. The OASR (Optimized Aperture Symmetrical RadiatorTM) is a new design in pattern control, it provides enhanced dispersion control in all axis, while maintaining the principle of Optimized ApertureTM, low distortion and clear transient highs