Polk Legend L900 Premium Height Module Speaker for Large Home Theaters. The Polk Legend L900 is a Height Module Speaker designed to be used with L600 & L800 tower speakers. The speaker features a 0.75" Pinnacle Tweeter and 4" Turbine Cone Driver that maximize high-frequency response and create an immersive height channel. The L900s design reduces diffraction, delivering a large "sweet spot" for consistent audio reproduction. It is fully compatible with Dolby Atmos, DTS, DTS:X, DTS:X Virtual, Dolby Atmos Height Virtualization Technology, IMAX Enhanced, and AURO 3D, the L900 seamlessly blends with your home theater for an unparalleled listening experience. Once installed with the L600 or L800, the L900 creates a top-quality sealed box. Legend L900s Phoenix connector reduces the loss of bass and suppresses cabinet wall resonances, while the anti-diffraction magnetic grille eliminates sonic interference. It is timbre-matched to the Legend Series speakers, offering virtual ceiling effects when added to L600 or L800 towers. For a complete cinematic setup, add the L900 with the L200 bookshelf pair and L400 center channel speaker. With its advanced features and compatibility, the Polk Legend L900 is an excellent choice for a home theater setup that delivers an immersive, high-quality audio experience.