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About the Signature Elite ES90
The Polk Audio Signature Elite ES90 is a pair of add-on height module speakers designed to sit securely atop compatible Polk floorstanding and bookshelf speakers for immersive overhead effects in Dolby Atmos, DTS:X, and IMAX Enhanced home theater systems. It uses a 1-inch Terylene dome tweeter and a 5.25-inch mica-reinforced polypropylene driver in a sealed MDF enclosure with an anti-diffraction grille, and is intended for use with compatible 4- or 8-ohm AV receivers.
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