Polk Audio Legend L400 Center Channel Speaker (Black) - Each

$1,799.00 OR

Color: Brown - In Stock

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Model: AM8940 UPC: 747192131265 Item: 3042

Product Information

Often overlooked, the center channel speaker is a vitally important part of your home theater setup.  The L400 center channel speaker features newly created technologies like a 4” Turbine Cone, a 1” Pinnacle tweeter oriented vertically to maximize dispersion, two 6 ½’ woofers and enhanced Power Port which will place you in the center of the action.  Feel, hear and understand every word without compromise.

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” and 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 Turbine Cone

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 and effortless bass – hear every detail.

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.

Compliments your Home Theater

Can be used for the front stage of any home theater, as well as side and rear surrounds. Legend Height Module (L900) are only compatible with floorstanding models.

Anti-Diffraction Magnetic Grille

Comes with a grille to cover the front baffle and a second grille for the top to cover the optional height module when installed. Computer modeled for a precision fit and to minimize sonic interference. The acoustically inert magnetic grilles offer a clean aesthetic without sacrificing 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).



  • Tweeter: 1" Ring Radiator
  • Mid-range/Mid-bass: 4"
  • Woofers: 6.5" (x2)
  • Frequency Response (-3dB limits): 55Hz - 38kHz
  • Overall Frequency Response: 38Hz-50kHz
  • Steady State Recommended: 25-300W
  • Recommended Amplifier Power: 80W
  • 2.83V Sensitivity: 87.5dBSPL@2.83V
  • Impedance: 4 ohm (3.0 ohm min.)
  • Tweeter/Mid-range Crossover Frequency: 2.7kHz
  • Mid-range/Mid-bass Crossover Frequency: 260Hz
  • Dimensions (W x H x D): 26" x 9.47" x 13.44"
  • Product Weight (each): 40.8 lbs
  • Woofer Enclosure Type: Power Port

What's in the Box

What's in the Box

  • L400 Floorstanding Speaker


We'd love to hear your thoughts! Please leave a review.

Customer Reviews for Polk Audio Legend L400 Center Channel Speaker (Black) - Each

4.0 / 5.0
4 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
Rated 5 out of 5
Better than expected
I was using a kef q350 with my polk r700s and r250 surrounds, but this thing blows that out of the water. I am very impressed by the quality and the uniformity of distribution. Should have bought this from the start!
October 31, 2022
Originally posted at
Polk Audio
Rated 5 out of 5
Perfect center channel blend for LSiM systems
A perfect center channel speaker replacement to go with my Polk LSiM 7.1 surround system. My original center channel speaker, Polk CS350-LS was distorting and needed replacement after 20+years of faithful service. I have always been a Polk customer since my first purchase in 1982 of the legendary Polk Reference Monitor System R.T.A. 12C which I still have in a reference stereo setup for music only. The home theatre with surround seems to get updated every 5-years as new tech becomes available. Main left and right channels are LSiM 705s and surrounds are provided by wall mounted LSiM705s. The new Polk Legend Center Channel Speaker L400 has been the perfect replacement for the CS350-LS. The performance of the L400 actually blends perfectly with the LSiM 705s and creates the perfect left-center-right integrated front sound for all our theatre listening from news to movies. The L400's great range enhances dialog depth while maintaining perfect clarity and voice positioning on all materials. If you have an older Polk surround system like the LSiM, be confident that the L400 will fit in perfectly. Highly recommend.
May 14, 2022
Originally posted at
Polk Audio
Rated 5 out of 5
Best center channel ever.
The L400 is the best center channel I've owned. This sits in between her big brothers (L800's and delivers clear, accurate, and wide dimension dialog.
I love being able to set the remote down and not turning the volume up and down to hear dialog depending on what the movie is doing. It doesn't matter if I'm 6 feet away from the L400 or 25ft away, or what seat you have on our angled sectional sofa as you will know the L400 its job.
The L400 does a excellent job with streaming podcasts/talk radio, regular TV, sporting events, but really comes to life on 4k Dolby content.
I run the L400 on my Yamaha a8a and have had it set at "small" and "large". I keep it set at "small" and it excels in that spec while running the L800s as "large" since I don't use a subwoofer, and don't really need to. The opening scene of Ghostbusters Afterlife felt like my wood floor was splitting in half and guess what, I could still hear every word regardless of what is going on musically or quaking in any movie. On some of my favorite 80's movies, while the recording quality itself is crap, the L400 seems to even out the dialog and still keeps everything clear. The L400....mic drop!
March 24, 2022
Originally posted at
Polk Audio
Rated 1 out of 5
Got a used scratched speaker instead of a new one!!!
February 26, 2020


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