Polk Audio Patio 25 Outdoor Loudspeakers, White A workhorse when it comes to filling large spaces with the kind of big, lifelike high quality sound for all your outdoor entertainment. Built to withstand the elements, which means youll be enjoying great performance for years to come. 6.5" polymer composite cone with durable rubber surround for solid bass and smooth midrange. 1" silk dome tweeter for clear, detailed highs. Gold plated, 5 way binding posts for the most secure connections. Frequency response: 40Hz - 25Hz; Maximum power handling: 150 W; Impedance: 8. Can be mounted horizontally or vertically. Can stand on shelf. Each speaker measures 12"H x 8.5"W x 9"D.