Polk Audio Legend L400
Polk Audio Legend L400 Center Channel Speaker
- Flagship 3‑way center‑channel speaker in the Legend Series, engineered to handle both dialogue clarity and dynamic effects in demanding home‑theater setups
- 1″ Pinnacle™ Ring‑Radiator Tweeter with precision waveguide—serves crisp, extended highs with expansive dispersion
- 4″ Turbine Cone Midrange in sealed enclosure, offering smooth, clean vocal presence
- Dual 6.25″ Woofers with rear‑firing Enhanced Power Port® for controlled, distortion‑free low end
- Hi‑Res Audio Certified—supports frequencies beyond 40 kHz for refined detail retrieval
- Premium Cabinetry: Real‑wood veneer, heavily braced interior, magnetic anti‑diffraction grille, and dual 5‑way binding posts to support bi‑amp or bi‑wire configurations
3‑way center‑channel
1″ Pinnacle ring radiator
4″ Turbine cone (sealed)
2× 6.25″ long‑throw
Mid/Woofer ~ 260 Hz; Tweeter/Mid ~ 2.7 kHz
42 Hz–50 kHz (overall); –3 dB at 55 Hz–38 kHz
87.5 dB (1 W/1 m)
Nominal 4 Ω (3.4 Ω min)
25–300 W RMS (peak 300 W); recommend ~80 W + RMS
26 × 9.47 × 13.44 in (66 × 24 × 34 cm)
40.8 lb (18.5 kg)
Real‑wood veneer (Black Ash / Brown Walnut)
Dual 5‑way (banana, bare, spade)
Designed to Impress
For the Designed from the ground up to be ultimate high performance center channel loudspeaker, Polk's Legend L400, with its flagship audio technologies, 3-way design, and beautiful cabinetry, has earned its place as the centerpiece of your home theater. Great sound without compromise.
Hi-Res Audio-Certified Performance
Your sound is only as good as your source. With High-Resolution certification, the Polk Legend L400 delivers clear and detailed high-end response. Female vocals are smooth and detailed without coloration. Plus, a minimum support of 40kHz perfectly reproduces the latest high resolution audio files with improved audio extension.
FLAGSHIP SONIC PERFORMANCE
4" Turbine Cone
Polk developed the 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 Power Port
With dual Power Ports, the L400, provides full range impact, matched with immaculate nuanced detail—front and center. Our patented Power Port technology smoothly transitions air flow from the speaker into your listening area resulting in louder, cleaner bass and more defined midrange without the turbulence, distortion, and port noise typically found in traditional ported speaker designs.
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 for the Legend Series, 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.
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