Polk Audio LEGEND L800 Owner Manual - Page 2

Contents Expect Great Sound - The Legend Legacy 2 Patented SDA Pro Surround Technology 2 Safety Instructions 3 What's in the Box 5 How to Connect Your System 5 Legend Series Speaker Positioning 6 System Diagnostics 8 Caring for Your Legend Loudspeakers 8 Specifications 8 Warranty ...9 Patented SDA Pro Surround Technology Polk Patented SDA Pro (Stereo Dimensional Array) surround technology creates an expansive soundstage and detailed stereo image, while delivering a natural multi-dimensional sound experience. A wide, detailed soundstage is accomplished by revealing the original recorded signal. By positioning additional drivers to deliver a precisely derived interaural crosstalk cancellation signal to your ears, SDA Pro enables you to hear the sonic image just as the recording captured it. Individual instruments appear across a wide stage, as if the performance were in front of you at that very moment. In addition to processing two channel audio, it also integrates with 5.1 surround sound and is compatible with modern decoding technologies. Expect Great Sound - The Legend Legacy Thank you for choosing the Polk Legend Series of loudspeakers. With sound that virtually transports the listener to the scene of the recorded performance, the Legend Series offers great Polk sound housed in bold, American design. Listen to music with crisp, lifelike detail and natural reproduction of complex low-frequency instruments - even during extended listening at performance levels. Dive into your music collection and bring the live show home, or amplify your home theater entertainment. With its American modern styling, each speaker in the Legend Series features gorgeous curves and aggressive accents that elevate the décor of your room. Pure and simple, the Polk Legend Series is engineered and designed with your entertainment in mind. HOW SDA PRO (STEREO DIMENSIONAL ARRAY) WORKS The original recorded left and right stereo signals are intended for the left and right ears, respectively. With conventional stereo speakers, sound from the left and right channel cross paths and are heard by the opposite ear (Figure 1). This is called Interaural Crosstalk (IAC). IAC distorts the imaging process, causing a narrow, shallow sound field (Figure 2). SDA Pro technology employs an acoustically inverted "dimensional" signal to cancel IAC, without impacting the original recorded signal (Figure 3). The result is that only the correct, original recorded signal reaches each ear, and the full width and depth of the sound stage is accurately reproduced (Figure 4). Stereo Having built a reputation as the makers of great sound for more than 40 years, Polk Audio takes pride in superior sound and build quality, which features many patented and award-winning audio innovations. For Polk, building audio products isn't just a job - it's a passion to deliver great sound that's accessible for everyone! L IAC R IAC L R IAC Stereo Signal Figure 1. Conventional Speakers Figure 2. Compressed Sound Stage due to Undesired Signals 1. 2 SDA True Stereo L IAC R IAC L Dim L R R Dim Stereo Signal IAC Dimensional Signal Cancelation Figure 3. Polk TRUE STEREO SDA Figure 4. Accurate Reproduction of the Full Sound Stage by the SDA Loundspeakers