IMMERSIVE SOUND The immersive, upward-firing driver adds a new dimension to movie soundtracks, making the sound come alive from all directions and creating a 3D space. The upward-firing driver projects sound towards the ceiling, with the ceiling reflecting the sound back down into the listening space. With this system there is no need to install in-ceiling speakers for height channels! This driver arrangement and connectivity is fully compatible with Dolby Atmos@enabled receivers and soundtracks COMPACT SIZE These immersive satellite speakers measure just 4S x IOS x 53, weigh in at only 29 pounds eacrv and are equipped with a universal 1/4'x20 threaded insert mounts TWEETER: 3/4' Aluminum Dome WOOFER: 3' Polypropylene INPUT POWER: 100 Watts SENSITIVITY: 88 dB IMMERSION HEIGHT DRIVER: 3' Polypropylene IMPEDANCE: 80 CONNECTORS: Binding Post DIMENSIONS: 4.5' x 10.5' x 5.3'. Buy with Confidence: Monoprice not only stands behind every product we sell with a 1 year replacement