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 29 - Aug 3

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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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Doreen
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★★★★★ 5
Works Great!
Much quieter than I was expecting. Lawn had needed this for years, I regained 6"-10" of driveway/sidewalk back. Makes the rest of the neighborhood look bad LOL Only the cleaning up wore me out, but it should be much easier next time.
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Reviewed in the United States on May 16, 2026
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Stephen C
Los Angeles, US
★★★★★ 5
Very light and effective trimmer
Style: 20V String Trimmer Kit
I’m very well designed trimmer that cuts through grass and weeds very easily. The battery lasts about 45 minutes. It’s fairly light and easy to use. I think it’s also a pretty good value.
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Reviewed in the United States on March 12, 2026
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CamperJoe
Lake Worth, US
★★★★★ 5
Perfect trimmer for my yard.
Style: 20V String Trimmer Kit
Works great. Love all the features for the price. I can get two yard trims out of 1 battery charge which is fine for me.
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Reviewed in the United States on May 28, 2026
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Henry Wolford
Whiting, US
★★★★★ 4
Nice unit, but poor user's manual
Style: 20V String Trimmer Kit
The unit itself is very nice. Seems sturdily built and is lightweight. Adjustable length works well and locks securely. I question the need for two speed control, but their claim is the lower speed saves battery power. I am not sure how much of a difference it makes and changing speeds in use is not very intuitive. A better choice would be an in between speed which is permanent to get better cutting and a little longer battery life. My annoyance comes from the lack of much information about the "automatic line feed" and how it operates. The fact is, the user's manual is bare bones for user information. The booklet is small, is divided into three languages, and all of the "icon" diagrams to explain things are so small you need a magnifying glass. I wanted to know what triggers the line feed, how it knows to lengthen it, and how it knows to stop feeding. None of that information is in the book or on the Black and Decker website videos. Aside from that, the unit is built well and should be durable. It is a good value for the money.
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Reviewed in the United States on November 4, 2025
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Normand H. P.
Lake Worth, US
★★★★★ 5
Black & Decker battery grass trimmer tool
Style: 20V String Trimmer Kit
Top quality battery operated Black & Decker Cordless String Trimmer ; . Assembly was very easy, only a couple pieces, not too heavy , versatile. ; What is great about the Black & Decker battery operated tools is that you can use the 20v battery with other Black & Decker tools that are out in the market. also, an extra battery can be purchased.. Tool as good instructions if you need it .
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