15-inch SPS BWX low frequency speaker 1508 driver series represent 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. The series includes 12-inch and 15-inch models in both 4 and 8 ohm impedances. The 1508sps driver is an excellent choice for general purpose sound reinforcement, and is available in both 4 and 8 ohm versions. Enclosure size is reasonable and bass / mid-bass performance is strong. Its versatility includes sealed and bandpass enclosure designs.