SKU: 3754669633

Polk Audio Reserve R400 Centre Speaker

Sale price$494.55 Regular price$549.50
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Ships within 48 hours · Estimated delivery Jul 25 - Jul 30

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Description

Polk Audio Reserve R400 Centre SpeakerThe R400 offers unrivalled power and clarity from a centre channel speaker. The addition of two 6. 5 turbine cone woofers and Polks unique X Port technology means it delivers enormous yet balanced sound, ideal for the ultimate home theatre system. Key Benefits Patent pending X Port Unrivalled power and clarity Blends into any dcor Sleek and elegant design Power And Clarity As we get older, we learn what better looks like, feels like, tastes like, and

The R400 offers unrivalled power and clarity from a centre 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 theatre system.

Key Benefits

  • Patent pending X-Port
  • Unrivalled power and clarity
  • Blends into any décor
  • Sleek and elegant design

 

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 Theatre

The centre channel is the most important speaker in any home theatre 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.

 X-Port

Polk's proprietary X-Port eliminates unwanted noise created as air moves in and out of the speaker cabinet port at high-speeds. This ensures a rich and detailed listening experience with tight distortion-free bass and a clean midrange.

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.

Hi-Res Audio Certified

The Reserve Series sets the benchmark for music and movie audio excellence.

 

Specifications

TRANSDUCER

Tweeter 1" Pinnacle Ring Radiator
Mid-range/Mid-bass -
Woofers Two 6 ½” Turbine Cone
Overall Frequency Response 36Hz - 50kHz
Frequency Response (-3dB limits) 48Hz - 39kHz
Recommended Amplifier Power 20 - 200W
Amplifier Output Compatibility 8Ω / 6Ω / 4Ω
Minimum Impedance (ohms) 4.1Ω
Sensitivity (2.83V/1m) 89dB


CROSSOVER

Tweeter/Mid-range Crossover Frequency 2500
Mid-range/Mid-bass Crossover Frequency -


MEASUREMENTS

Product Dims W x H x D (Includes width of feet) 615 x 196.6 x 350mm
Product Weights (each) 14.9 kg
Shipping Weight 17.9 kg


CABINETRY

New CRC (Mid-Range Enclosure Type) -
Mid-Bass / Woofer Enclosure Type Dual Rear X-Ports
Available Finishes Black / Walnut
Feet Rubber pads
Wall-Mountable (keyhole slots) No
Binding Posts: Nickel-plated 5-Way Single



Certifications (Non-Safety and Regulatory)

Hi-Res Certified Yes
IMAX Certified Yes
Shipping Dims (WxHxD) 740 x 483 x 293mm
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 3754669633

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Cuba, US
★★★★★ 5
Perfect fit
Size: Large, Color: (100) White / White / Black
Durable and comfortable. Size works well. Very soft with nice thickness for training. Fairly long lasting
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Reviewed in the United States on February 12, 2026
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Natrona Heights, US
★★★★★ 5
Post-COVID Sock Hunt: Finally a Win
Size: Medium, Color: (001) Black / Black / White
Ever since COVID, I haven’t been able to find a pair of socks that hold up for more than a few months. Brands like UA, Adidas, and others seem to have cut corners—likely in response to inflation—by downgrading materials and labor rather than raising prices. The result? Socks that wear thin, rip easily, or lose shape fast. These, however, have been a pleasant surprise. I’ve been wearing them for a few weeks and so far, they’re holding strong. You can tell some cost-saving measures were still made—certain areas feel slightly thinner—but overall, the construction is solid. A key win: they stay on. These are ankle socks (not “no-shows”), and they hug the ankle securely. That’s a huge plus in a world where most post-COVID no-shows slide off halfway through the day. We may never get back to the pre-COVID quality standards without paying a premium, but for now, these are a reliable choice. Ratings: • No slipping: 10/10 • Price: 7/10 • Durability (so far): No pilling or loose threads — promising start.
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Reviewed in the United States on March 24, 2025
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Battle Creek, US
★★★★★ 5
Great Quality and Stylish
Size: Large, Color: (001) Black / Black / White
Exactly what I was looking for. I don’t like socks that are no-show that your ankles rub on the shoe. These are taller than that but shorter than socks that go up and over the ankle. They’re comfortable, good quality, and pretty thick. They’re form fitting m, but not compression. I dint like compression socks, and these are tight, but not too tight.
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Reviewed in the United States on June 5, 2025
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Eric
Bozeman, US
★★★★★ 5
Affordable and good quality socks
Size: Medium, Color: (001) Black / Black / White
Good quality!
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Reviewed in the United States on May 9, 2026
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Thomas Boelter
Phoenix, US
★★★★★ 4
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Size: Large, Color: (001) Black / Black / White
They are very comfortable and fit just right
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