Polk Reserve Series R400 Centre Channel Speaker (Each)
SKU: 88624152100

Polk Reserve Series R400 Centre Channel Speaker (Each)

Sale price$395.55 Regular price$439.50
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Ships within 48 hours · Estimated delivery Jul 6 - Jul 11

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Description

Polk Reserve Series R400 Centre Channel Speaker (Each)Polk Reserve R400 Centre Channel Speaker The Centre Channel is the most important speaker in any home theatre setup. The Reserve R400 uses Polks 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

Polk Reserve R400 Centre Channel Speaker

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.

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 moulded 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.

Polk Newly Patented X-Port (ETF)

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.

Features

  • Sleek and Elegant design
  • Blends into any décor
  • Patent Pending X-Port
  • Flagship transducer technology

Specifications

  TRANDUCER

Tweeter1"  Ring Radiator
Mid-range/Mid-bass Two 6 ½” Turbine Cone
Overall Frequency Response 40 - 50000
Recommended Amplifier Power 20 - 200W
Sensitivity (2.83V/1m)89dB
Impedance8Ω (4.1Ω min.)

CROSSOVER

Tweeter/Mid-range Crossover Frequency2500

MEASUREMENTS

Product Dims (WxHxD)(615 x 196.6 x 350)mm
(24.2 x 7.8 x 13.8) in

Shipping Dims (WxHxD)740 x 483 x 293)mm
(29.1 x 19 x 11.5) in

CABINETRY

Mid-Bass / Woofer Enclosure Type Dual Rear ETF Ports(X-Port)

Available Finishes Black / Brown

Feet rubber pads

Binding Posts Single nickel-plated 5-way binding posts


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: 88624152100

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Anthony H.
Grantham, US
★★★★★ 5
Simply easy to learn from
Format: Paperback
What an amazing book! Very easy to learn different languages, and it also simple for kids to learn from. My kids have been learning and having fun with showing me what they’ve learn. So glad I brought this I recommend this for anyone
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Reviewed in the United States on March 22, 2026
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Sherry
Louisville, US
★★★★★ 5
A Essential! You won’t regret buying it!
Format: Paperback
Great book! Definitely going to help while traveling! I am also going to use it to teach my children words in different languages. Especially while they’re young. Knowing different languages is definitely an essential part of every day life now. Highly recommend!! It’s easy to read and easy to interpret. It’s neatly put together.
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Reviewed in the United States on March 13, 2026
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Joey vorster
Houston, US
★★★★★ 5
Review
Format: Paperback
This book has so much useful and helpful information. It’ll definitely come in handy for when I travel.
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Reviewed in the United States on March 6, 2026
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Candy
Louisville, US
★★★★★ 5
Ok
Format: Paperback
Good reference
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Reviewed in the United States on August 10, 2025
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Rudolf Jelín
Carnegie, US
★★★★★ 5
A great tool for designing games.
Format: Cards
I got it after reading the book and it really helps. Better compared to the online lens cards. Not sure about the price.
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Reviewed in the United States on March 8, 2026

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