84%
Polk Audio Reserve R400
Premium High-performance 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.
- Dual 6.5" Turbine Cone woofers
- 1" Pinnacle Ring Radiator tweeter
- X-Port for deep bass
- Hi-Res Audio certified
- Dolby Atmos & DTS:X compatible
Power and Clarity
As we get older, we learn what better looks like, feels like, tastes like, and even drives like. Inheriting best-in-class technologies from our flagship Legend series of loudspeakers, the Polk Reserve series helps teach you what better sounds like.
Crystal Clear Vocals for 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.
Pinnacle Ring Radiator Tweeter
The Pinnacle Ring Radiator Tweeter’s distinctive pointed shape guides the dispersion of high frequency sounds around a room. This innovation widens the sweet spot and allows you freedom to enjoy your music and movies wherever you choose to sit.
Turbine Cone Woofer
Our pioneering turbine design delivers a significant increase in cone rigidity without increasing mass. This innovation means the woofer can move with increased accuracy and speed to deliver enhanced sound resolution, enabling you to experience a breathtaking level of detail in your music and movies.
Purity of Sound
X-Port
Reserve R400 features two X-Ports, featuring a set of closed-pipe resonators, called Eigentone filters that are tuned to absorb unwanted port and cabinet resonances, providing you pure, unadulterated, crystal clear sound and more bass output.
Form and Function
Exceptional Cabinetry
Reserve’s sleek cabinetry hides a world of audio innovation. Cabinets are carefully cross-braced to best eliminate unwanted interior resonances. Rounded exterior corners help disperse sound broadly around the room with minimal diffraction, creating an open sound stage.
Dealers selling Polk Audio near you
Focused on delivering intelligible vocals and a centered, detailed presentation, the Reserve R400 pairs a 1-inch ring-radiator tweeter with twin 6.5" Turbine drivers to prioritize midrange clarity and coherent imaging. Review coverage highlights flagship-derived drivers and upgraded cabinetry that boost perceived value across the Reserve line, making the R400 a compelling centre for home theatre setups (Jay Garrett).
Pros
- Designed for clear, intelligible vocals and midrange focus thanks to a 1-inch ring-radiator tweeter and twin 6.5" Turbine drivers.
- Uses drivers derived from Polk's flagship lineup, suggesting elevated performance and refined timbre for the price bracket.
- Part of a flexible Reserve ecosystem—pairs well in home-theatre configurations and can be complemented by Polk's R900 height modules for Atmos setups.
&
Cons
- Limited hands-on reviews and measurements at launch—publishers note that only direct listening will fully confirm real-world performance.
Sound Quality
84/100
Bass
82/100
No third-party review text was supplied. Score is an inference from Polk's Reserve-series tuning and the $699 price point: expect controlled, reasonably deep bass for a bookshelf design but not floorstander extension. Conservatively rated to reflect likely good low-frequency articulation for the form factor without explicit driver/enclosure details.
Mid
86/100
Polk's Reserve line typically emphasizes natural, slightly warm midrange. In absence of reviews, this score assumes clear, well-bodied vocals and instrument timbre appropriate to a $699 bookshelf offering, giving it a slightly above-average midrange presence.
Treble
85/100
Inferred refined treble with good detail retrieval and limited harshness based on brand and series positioning. Score reflects expected balance between air and smoothness rather than forward brightness, given Polk's recent voicings.
Soundstage Imaging
84/100
Projected to deliver a reasonably wide and focused soundstage for a stand-mount speaker, with stable imaging and good depth. No placement/tweaking reports were provided, so score is moderate-high based on Reserve-series design goals.
Dynamics
82/100
Expected to offer good micro and moderate macro dynamics for its size when driven by an appropriate amplifier. Score reflects likely solid transient response and punch without claiming exceptional headroom in large rooms.
Show Less
Build Quality
88/100
Polk's Reserve models generally feature upgraded cabinets, finishes, and quality control versus entry-level lines. Given the $699 price, a high build-quality score is inferred (good bracing/finishes and quality parts), though no physical-inspection reviews were supplied.
Features Connectivity
80/100
Passive bookshelf baseline applied: single-post binding posts assumed. No evidence of biwire/biamp or additional onboard features was provided, so baseline score of 80 is used per rules.
Value for Money
82/100
At $699, these sit in a competitive mid-$range bookshelf segment. Inferred value reflects strong expected performance and build for the price but not an outright bargain versus well-known competitors; scoring is conservative in absence of direct comparative reviews.
Reviews
Forum Mentions
No forum mentions found yet
FAST, EASY & NEAR
Find Polk Audio Verified Dealers Near You
Polk Audio dealers in the map