LSi25

Floorstanding loudspeaker with built-in powered subwoofer.
The Loudspeaker for
the Serious Listener.

49-3/4" H x 8-5/8" W x 17" D
( 126.36cm H x 21.91cm W x 43.18cm D )

LSi25
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ebony

cherry
MSRP:
3199.90 per pair (US)¹

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Overview Specifications Customer Reviews Accessories

Who should listen to the LSi Series?

Matt Polk: "The LSi is for a serious listener; the person who really enjoys music, who sits down and really intently listens to his stereo system. Maybe this person already owns Polk Audio speakers, or has owned Polk speakers in the past, and has always felt that they wanted something 'tweakier.' This person could be a serious home theater enthusiast, too. They want to hear every detail a movie soundtrack has to offer. There's no question these speakers play loud, but new high-definition audio formats like Super Audio CD and DVD-Audio demand a new level of performance. The LSi is for the listener who is more interested in quality over quantity."

What's so special about the LSi Series?

Matt Polk: "The drivers and the tweeter are unusually good for the price of this product. The drivers use cast baskets with an Aerated Polypropylene Cone. Aerating literally foams the polypropylene, helping to supress resonance without adding any mass; same amount of material but you have better damping characteristics. And the tweeter is very special. It's a Ring Radiator Tweeter (that's it on the right). The driver and tweeter of the LSi speakers deliver flatter frequency response with lower distortion in the frequencies we can hear, revealing more of the detail. Beyond detail, I think they are more tonally accurate. When you hear a piano, voice or any accoustic instrument there's just something about it that just sounds more correct, with less coloration; more real."

How does the LSi Series sound?

Matt Polk: "Like I said, it sounds real. To my ears, the LSi Series performs more like live music. You're going to hear all the little details. They image very well; part of what contributes to that imaging is the quality of the tweeter and the wide dispersion of the small midrange drivers. The LSi25 is a floorstanding speaker that delivers superior linearity, definition and imaging, as well as bass response that’s rich, deep and satisfying. Like the whole LSi Series, they are highly accurate and intensely musical."


The LSi25 features:

  • Superior musical accuracy, serious theatrical impact.
  • Designed for high definition formats such as SACD and DVD-Audio.
  • Built-in 10" powered subwoofer for true full-range performance from all audio and video sources.
  • Available with either natural Cherry or Ebony real wood veneer side panels.
  • Mirror imaged pairs for tightly focused highs and true three-dimensional imaging with minimized room reflections: Hear what you’ve been missing!
  • Cascade tapered driver array improves image focus and detail.
  • Ultra high performance Ring Radiator tweeters, previously unavailable in speakers at this price, for extended frequency response, low distortion, excellent dynamics with superior detail and transparency.
  • 5 ¼" Dynamic Balance drivers with Aerated Polypropylene cones for wide response and low distortion.
  • Cast aluminum driver baskets resist flexing and "ringing" for ultra-tight bass and coloration-free midrange.
  • Side panels are 1-1/2" thick for a totally inert enclosure - you hear all the music and only the music.
  • Precise, deep bass response provided by a floor-coupled PowerPort® venting system.
  • Smooth, natural midrange reproduction thanks to patented Acoustic Resonance Control technology.
  • Magnetically shielded for safe placement near video monitors.
  • Premium crossover components for consistent high-end sound quality.
  • Mylar bypass capacitor in the high-pass crossover extends and flattens high frequency response. Hear musical details you've never heard before!
  • Open architecture low diffraction grille for spacious imaging.
  • Dual (bi-ampable) gold plated 5-way binding post inputs for the most secure wire connections and the most versatile wiring applications.
  • Low level line (filtered) and LFE (unfiltered) subwoofer inputs
  • Adjustable leveling feet/carpet spikes for the ultimate stability on any type of floor.

Recommended Systems

Front Center Surround Subwoofer MSRP USA* MSRP Canada*
 LSi25   LSiC   LSiFX      $5049.80   $2299.90 
 LSi25   LSiC   LSiFX   PSW1000   $6249.75   $3699.85 
 LSi25   LSiC   LSi15   PSW1000   $7099.70   $2249.90 
Customer Rating:

4.68 (from 22 users)
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Expert Reviews:

"...the new Polk LSi series provides exceptional value for money..."
The Absolute Sound, April/May 2002

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