Polk Audio Introduces New DSW PRO™ Powered Subwoofers

New models feature digital electronics and proprietary technologies

January 16, 2007

Today at Consumer Electronics Show booth 21240 in the South Hall of the Las Vegas Convention Center, Polk Audio announced a new line of high performance powered subwoofers for 2007. The three DSW PRO™ Series models are Polk’s mid-line high value subwoofers and join seven other new powered subwoofers from Polk Audio being introduced at CES 2007; the largest subwoofer introduction in Polk Audio’s history. The DSW PRO models range in price from $480 to $700 and feature proprietary digital engines for spectacular performance and convenience as well as superior optimization for room acoustic and placement conditions by means of the Polk Room Optimizer™ (PRO) system. The DSW PRO models replace Polk’s current PSW350, PSW450 and PSW550 models. All DSW PRO models are powered by digital amplifiers with an integrated proprietary Digital Signal Processing engine. The DSP engine features two exclusive Polk Audio technologies that provide the listener with dramatic benefits. The first is Feed Forward™ distortion suppression technology that maximizes output and dynamic range while vastly reducing distortion. Some woofer correction and control systems focus on optimizing the ability of the woofer to produce steady state signals but do little to improve the dynamic performance. Feed Forward distortion suppression technology is a proprietary zero latency system that optimizes maximum dynamic output of the woofer system and which does not rely on slow responding feedback techniques. Feed Forward delivers massive, yet quick and precise bass output with a minimum of audible distortion. “The Best Bass Anywhere” The second Polk innovation is the Polk Room Optimizer™ (PRO). The DSW PRO remote control offers four push-button room equalization preset choices that correct for room boundary effects in typical rooms. Subwoofer placement near walls and corners change a woofer’s response. PRO adjusts frequency balance for four typical in-room placements: “long wall,” “short wall,” “in corner” and “mid-room.” The four PRO EQ presets introduce frequency equalization to correct for boundary effects for quick and easy bass performance optimization. All four models feature a credit card-sized remote control that allows the user to adjust subwoofer volume and phase (0, 90, 180 and 270 degree settings), mute, select the PRO presets, and engage the “Night” function. The Night function employs digital signal processing to compress the dynamic range of the woofer’s output so that listeners will hear all the low-level bass detail on the program material without resorting to loud listening. A “reset” button on the remote restores the woofer’s settings to factory presets. A blue LED behind the woofer’s logo badge blinks to confirm the subwoofer has received and responded to the remote’s instructions. Central to the high impact performance of the DSW PRO subs are the robust downward firing active subwoofer drivers that are magnetically shielded for safe placement near video screens. Like all Polk drivers designed in the past few years, the DSW PRO’s subwoofer drivers were tuned with the help of a Klippel Distortion Analyzer, an advanced tool that uses laser technology to measure and optimize driver behavior under high output conditions. With the Klippel tool Polk engineers were able to maximize linearity, minimize distortion, flatten and extend frequency response. DSW PRO subwoofers use downward firing woofers and a wide mouth slot port to maximize coupling to the room to achieve lifelike dynamic range with low distortion. DSW PRO’s stabilizer feet can be moved to the back of the enclosure allowing the subwoofer’s orientation to be changed to front-firing when called for such as when placed in a cabinet, The enclosures are finished in satin black paint but can be painted to match the room’s décor. All DSW PRO models will be available in May 2007 at specialty consumer electronics retailers worldwide. About Polk Audio Polk Audio is an award-winning designer and manufacturer of high performance audio products and the largest audio brand of Directed Electronics, Inc. (NASDAQ, DEIX). Founded in 1972 by three Johns Hopkins University graduates, Polk Audio holds over 50 patents for advances in loudspeaker design and technology. Polk's products include loudspeakers and electronic components for home, auto and marine applications, the first satellite radio home component tuner, the world's first audiophile-grade active IP-addressable loudspeaker, the first THX Ultra2 Certified in-ceiling loudspeaker, and I-Sonic—the first entertainment system to include HD radio, XM Connect & Play capability and a DVD player. Polk products are available through authorized specialist consumer electronics retailers worldwide. For more information and the location of a Polk retailer or distributor in your area visit the www.polkaudio.com or call us at 1-800-377-7655 (USA and Canada). Outside of North America call +1 (410) 358-3600.

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