The Polk Audio LSi9 bookshelf speaker is a bookshelf speaker that delivers superior linearity, definition and imaging, as well as bass response that's rich, deep and satisfying. It's superior musical accuracy equals serious theatrical impact. Like the whole LSi Series, it is highly accurate and intensely musical. Its dual driver and Ring Radiator Tweeter (rare in a speaker of this price) present a large soundstage without sacrificing pinpoint localization. The Mylar bypass capacitor in the high-pass crossover extends and flattens high frequency response. Hear musical details you've never heard before. Listen to the LSi Loudspeakers with SACD and DVD-Audio sources to reveal higher accuracy and resolution, with more dynamic response and superb focus; true three-dimensional imaging and remarkable reproduction of even the finest details.