High Performance Sound Deliver clear, lifelike sound and avoid acoustical "dead spots" with Bose® 4.5 inch drivers and Articulated Array® speaker configuration. The 802 Series III loudspeaker uses eight proprietary full-range drivers to provide a more consistent sound field than conventional speakers that rely on woofers, tweeters and crossovers. Our proprietary speaker configuration uses a baffle array for each driver to provide wide horizontal and vertical dispersion over all bandwidths. Durability Need a speaker that works as hard as you? The 802 III speakers are now part of our new Installed Anywhere speaker line, meeting our strictest standards for outdoor use. The transducer has been upgraded to withstand snow, sleet and rain, severe cold, high heat and humidity-the worst that Mother Nature can dish out. The input/output connectors are extremely rugged and reliable, and the sturdy yet lightweight mica-reinforced polyethylene cabinet stands up to severe weather and frequent transporting. 114db - SPL , 55Hz - 16kHz plus or minus 3db |