DS18 12XL1500-4 XL 12″ Mid-Range Loudspeaker 750 Watts Rms 4-Ohm DS18’s 12XL1500-4 is power and precision personified. Designed for an unparalleled sound experience, this speaker is sure to change the way you experience music. DS18’s 12XL1500-4 stands head and shoulders above the mid-range competition