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Polk Audio Reserve R400 - Centre Channel Speaker

Key Features

Purpose-Built Centre Channel Performance

  • Designed specifically to anchor dialogue and center imaging in home theatre systems

  • Matches tonally with Polk Reserve series front speakers for cohesive system integration

Advanced Driver Configuration

  • Dual mid-bass drivers for robust midrange performance and solid sonic foundation

  • Dedicated high-frequency tweeter (usually a Pinnacle Ring Radiator or similar) for clear, detailed highs

  • Precision-engineered crossover network ensures smooth integration across the frequency range

Sound Quality

  • Clear, articulate dialogue reproduction ideal for movies, TV shows, and gaming

  • Balanced, neutral tonal character that blends evenly with left/right speakers

  • Wide horizontal dispersion for consistent sound coverage across the listening area

  • Tight, controlled bass response without boominess

Cabinet & Acoustics

  • Sturdy, low-resonance enclosure designed to minimize coloration and distortion

  • Bass-reflex tuning for enhanced low-frequency extension

  • Elegant finish that integrates with premium home theatre décor

Connectivity & Compatibility

  • High-quality binding posts for secure speaker cable connection

  • Compatible with a broad range of AV receivers and amplifiers

  • Ideal for 5.1, 7.1, and larger multichannel systems

Placement & Installation

  • Designed for horizontal placement beneath or above a TV or projection screen

  • Compact footprint fits well in AV furniture or wall-mounted setups

  • Stable, balanced design that avoids tipping or vibration

Use Cases

  • Centre channel in dedicated home theatre systems

  • Enhances speech intelligibility and center imaging in movie soundtracks

  • Works seamlessly with Polk Reserve series left/right front and surround speakers

Description

  • Polk Audio Reserve R400 – Centre Channel Speaker

    R400 Center Channel Speaker

    The R400 offers unrivalled power and clarity from a center channel speaker. The addition of two 6.5” turbine cone woofers and Polk’s unique X-Port technology means it delivers enormous yet balanced sound, ideal for the ultimate home theater system.

    Crisp dialogue and dynamic sound right in your living room

    The Polk Reserve R400 center channel speaker features dual 6.5” Turbine cones and a 1” Pinnacle tweeter. This flagship transducer array delivers the clearest, most intelligible vocals for your favorite movies, shows, games and more. The newly patented X-Port eliminates cabinet resonance for distraction-free enjoyment.

    Cabinets Built for Better Performance

    Polk believes cabinets should be beautiful and add nothing to the playback. Polk Reserve 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 transducer array while it faithfully reproduces recordings.

    Polk’s Newly Patented X Port (ETF Port)

    Polk’s newly patented X-Port incorporates an Eigentone Filter (ETF) offering distortion-free, effortless bass. Consisting of a set of closed-pipe absorbers that are specifically tuned to catch and eliminate traditional speaker distortions. X-Port ensures that the upper bass and mid-range are free of port and cabinet resonances for smooth, detailed audio.

    High Definition Pinnacle Ring Radiator Tweeter

    Over 40 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 ultraclear, 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 rearchamber helps 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 movies, sports, and video game soundtracks.

    Crystal Clear Vocals For Your Home Theater

    The center channel is the most important speaker in any home theater setup. The Reserve R400 uses Polk’s latest flagship transducer array to deliver clear, crisp, intelligible dialogue no matter where you sit.

    6.5” Turbine Cone

    Polk developed the Turbine cone specifically for our flagship products to ensure the natural reproduction of the mid-range, to which human ears are particularly sensitive. The Turbine cone combines Polk’s proprietary foam core and molded Turbine geometry which dramatically increases stiffness and damping, without adding mass. You will hear every detail and experience a smooth, detailed mid-range and effortless bass.

    Features

    • Home Theater Essential: The center channel speaker is the most important speaker in your home theater system, delivering movie and TV dialogue with exceptional clarity
    • Pinnacle Tweeter: The new ring radiator tweeter design dramatically improves dispersion while delivering clear, crisp and natural highs
    • Turbine Cone: Delivers smooth and incredibly detailed midrange imaging
    • Polk Patented X-Port: closed-pipe absorbers that are specifically tuned to catch and eliminate traditional speaker distortions
    • Anti-diffraction Magnetic Grilles: Acoustically inert grilles offer a clean aesthetic without sacrificing sound

     

    Specifications

    Transducer
    1″ Ring Radiator
    Two 6 ½” Turbine Cone
    Minimum Impedance
    4.1
    Sensitivity
    89dB
    Frequency Response
    48Hz – 39kHz
    Dimensions and Weight
    (W)615mm x (H)196.6mm x (D)350mm
    (W)24.2” x (H)7.8” x (D)13.8”
    32.8Ibs/14.9kg

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