A: ARC Genesis (Anthem Room Correction) is Anthem's proprietary automatic calibration system

Thanks to its large-capacity internal battery

even low-output ones

the TR-3D has a continuously variable low pass filter – from 50Hz to 180Hz

making it even more flexible

Polk Audio Atrium 5 Amplificatori integrati Audio Video multicanale A: ARC Genesis (Anthem RoomAll Weather Outdoor Speakers with 5" drivers and 3 4" tweeters. Certified all weather and water resistant to withstand the worst elements salt spray, UV rays, extreme temperatures or heavy rain. PowerPort bass reflex tuning tube for deep, dynamic bass Designed with Polk's Dynamic Balance technology Sound performance everywhere Like all of our outdoor models, the Atrium5 is built to withstand the elements, meaning you'll enjoy great performance for