18-inch SPS BWX low frequency speaker driver series represents a new level of power and performance for Black Widow loudspeakers, power handling is increased by 40% over other comparable models, along with reduced distortion and higher overall sound quality. This series consists of four specially designed 18” drivers, suitable for high performance sound reinforcement and musical instrument applications. This driver is a traditional 18-inch PA speaker design, requiring a fairly large enclosure but producing very deep bass at high sound pressure levels. It has a warm midbass character and works in both vented and singlereflex bandpass designs.