Bose MA12EX. The Bose Professional Panaray MA12EX extended range column array for indoor and outdoor use is designed to provide excellent speech intelligibility in acoustically challenging spaces with a wider horizontal coverage of 160°. It has weather-resistant components that allow it to be used outdoors. Product details : https://www.boseprofessional.com/en-us/products/loudspeakers/line-columns/passive/ma/ma12ex-modular-columnar-array-loudspeaker