The Electro-Voice ZX1i is the new standard of no compromise audio performance and versatility in an easy to install, compact sound reinforcement package.The high-tech enclosure uses injection-molded high-impact polypropylene to make the ZX1i extremely durable. The enclosure geometry has been engineered to provide maximum rigidity and acoustic performance. The velocity compensated port design overcomes the limitation of many small cabinet loudspeakers and enables exceptional low-frequency response without vent noise.