Electro-Voice ZX1-SUB ZX1-Sub, Black, PassiveZX1 Sub 12 Passive Subwoofer 15 mm plywood enclosure, internally braced, with textured paint EVS 12S 12" woofer for powerful, engaging bass response Pole mount for full range systems The new ZX1 Sub is optimized for performance with a variety of EV loudspeakers, including ZX1, EVID, and EVU models, and will add a deep low frequency punch that you can feel as well as hear. An ideal choice to complete a wide range of smaller fixed installations or live