LD Systems MAUI i1 Passive Indoor/Outdoor Installation Column Loudspeaker (White)For acoustically challenging interiors where music and speech must be clearly understood, even in the rearmost rows, there is one solution MAUI i1 W. This feature is achieved with nine 3" mid range drivers, two 1" neodymium high frequency drivers and a specially developed BEM optimized Waveguide. This combination avoids unnecessary reflections on the floor and on ceilings by keeping the vertical dispersion as narrow as possible and the horizontal one