Polk Legend L400CBK Center/Unit



  Polk Legend Premium Center Channel speaker, 300W

Polk Audio L400BK Legend Speakers Series L400 Home Theater Black Ash Center Channel (Each)

The Center Channel For Large Home Theaters

Get in the Action ” whether watching the Super Bowl, the latest blockbuster action movie or even playing your favorite video game, the Polk Legend L400 speaker will put you in the action. Don”t underestimate the most important speaker in your home theater system; go big and make every seat the “sweet spot.” Features 1″ Pinnacle Tweeter, 4″ Turbine Cone Mid and two 6 “” woofers with Polk Enhanced Power Port.”Feel, hear and understand every word.

Polk”s goal since its founding has been to build great loudspeakers that virtually transforms the listener”s room into the scene of the recorded performance. To meet this challenge, Polk engineers and designers must constantly innovate and agonize over every detail. Nothing is left to chance and nothing unnecessary is ever added. The results are best-in-class loudspeakers that outperform their competition for half the price, earning numerous awards, patents, and most importantly Polk speaker owners that swear by the brand. Don”t take our word for it ” go listen and you”ll believe.

Key Features

  • Drawing from more than 45 years” experience in developing loudspeakers, the Legend Series defines the next generation of Polk.
  • Whether watching the Super Bowl, the latest blockbuster action movie or playing your favorite video game, the L400 speaker puts you in the action.
  • Don”t underestimate the most important speaker in your home theater system; go big and make every seat the “sweet spot.”
  • The L400 center channel speaker features newly designed 1″ Pinnacle tweeter, 4″ Turbine Cone mid-range driver and dual 6-1/2″ woofers with Enhanced Power Port.


  • New High Resolution
    Pinnacle Ring Radiator Tweeter

    40 plus years of tweeter innovation, design and prototyping has led to the development of the new 1″ high definition Pinnacle ring radiator tweeter. Developed by Polk Audio, it delivers ultra-clear, crisp highs without unwanted coloration or distortions. The Pinnacle tweeter features a finely tuned waveguide that dramatically improves the dispersion of high frequency energy ensuring a broad “sweet spot” while the critically damped rear-chamber helps to defeat any unwanted resonances. Hi-Res certified, the Pinnacle Tweeter is designed for today”s two-channel music listening as well as multi-channel 3D audio found in music, movies, sports, and video games soundtracks.
  • New 4″ Turbine Cone Mid-Range Driver
    Polk developed the new Turbine cone specifically for the Legend series to ensure the natural reproduction of the mid-range, the frequencies our ears are so sensitive to. The Turbine cone combines Polk”s proprietary foam core and the molded Turbine geometry which dramatically increases stiffness and damping, without adding mass, resulting in a smooth, detailed mid-range.
  • Better Bass By Design
    Enhanced Powerport

    Traditional bass ports make noise (chuff) and mask the low frequency bass notes you want to hear. The new enhanced Power Port” design smoothly transitions air flow from the speaker into your listening area for louder, cleaner bass while minimizing turbulence, distortion, and port noise. Polk refined their current Power Port technology specifically for the Legend series by fine-tuning the geometry of the port flare. Hear and feel the difference; Polk Enhanced Power Port” produces less port noise and more powerful clean bass than traditionally ported loudspeakers.”Polk L400 center channel features two 6-1/2″ mid-woofers that extend the lower midrange and bass response of your center channel. From dialogue to explosions, the Polk L400 center channel is full-range to ensure that all center channel content is locked to your screen.
  • Anti-Diffraction Magnetic Grille
    Computer modeled for a precision fit and to minimizes sonic interference. The acoustically inert magnetic grille offer a clean aesthetic without sacrificing sound
  • Large Dual 5-Way Binding Posts
    Perfect for easy setup, dual binding posts ensure the most direct, efficient, and loss-less connection possible while supporting both bi-wire and bi-amping.
  • High-Resolution Certified
    Multi-channel music sounds amazing with the L400. Your sound is only as good as your source, and with High-Resolution certification, the Polk Legend L400 delivers clear and detailed high-end response.
  • Expect Great Sound
    Engineered By Polk USA

    For over 45 years, Polk Audio has been designing, engineering and voicing amazing sounding loudspeakers, sound bars and smart speakers. Polk engineers, prototypes, tests, and listens to every aspect of its loudspeakers in their Baltimore Maryland USA engineering facility. From innovation in tweeter design to the legendary Stereo Dimensional Array (SDA) speakers, Polk audio delivers great sound that”s accessible to all.

    • Limited Warranty, Built To Last
      The Legend speaker series is built to last. Featuring a best-in-class 5-year limited warranty, with a free 5-year extension when you register your product (non-transferable).
  • Cabinets Built For Better Performance
    Polk believes cabinets should be beautiful but add nothing to the playback. Polk Legend cabinets, braces, and internal enclosures are carefully engineered to minimize unwanted internal standing waves and eliminate unwanted resonances. The result is a cabinet that rigidly holds the transducers while faithfully reproducing recordings.

    • Real Wood Cabinets
      From the first hand-made cabinets built in 1972 to today”s new flagship speaker series, Polk has been designing wooden cabinets with real wood for over 45 years. Inspired by our heritage, Legend carries forward that tradition of classic design of a high-performance loudspeaker. Available in two real wood veneer finishes: brown Walnut and black Ash.


Recommended Amplifier Power80W
Peak Power Handling (watts)300W
Tweeter Size (in)1
Tweeter(s)1 x 1″ Ring Radiator
Midrange Size (in)4
Midrange(s)1 x 4″ Mid-range/Mid-bass
Woofer Size (in)6.5
Woofer(s)2 x 6.5″ Woofers
Frequency Response42Hz – 50kHz
Enclosure TypePower Port Bass Vented with Sealed Midrange
Impedance4 ohms
In the Box1 x Cleaning cloth, 1 x Removable Magnetic Grilles
Sensitivity87.5dBSPL @ 2.83V
Speaker TypeCenter Channel Speaker

Approximate Dimensions

Height (in)9.47
Width (in)26
Depth (in)13.44

Approximate Weight

Unit Weight (lbs.)40.82
Shipping Weight (lbs.)46.2

Polk Audio


Legend Series



Product Type

Center Channel


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Fill your home with the big, clear sound of Polk speakers and elevate your favorite movies, TV shows, sports games, music, and more