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Item#: 9SIA2GA1K43118

Polk Audio Atrium 4 Compact Indoor/Outdoor Speaker White Pair

  • 75Hz-25kHz
  • 8 ohms 10-80 w/channel
  • 89 dB

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  • Overview
  • Specifications
  • Warranty & Returns
  • Reviews

Polk Audio Atrium4
Compact Indoor/Outdoor Speaker - White - Pair
The Atrium4 is the smallest, most compact member of the latest generation of Atrium all-weather outdoor loudspeakers. Ideal for tight spaces, the Atrium4 will nonetheless prove more than capable of filling outdoor spaces with the legendary Polk sound.

Big Fidelity, Small Speaker

The compact Atrium4 loudspeaker produces high fidelity sound quality anywhere you want great sound. It’s small size makes it ideal for tight, out-of-way installations. By the pool, around the kitchen, tucked away in the family den or filling the backyard with great sound. Like our bigger Atriums, the Atrium4 is built rugged to deliver years of great performance fall, winter, spring and summer.

Atrium4 Features:

  • Easy one-cut, drop-in installation puts built-in audio within reach, with Perfect Fit templates, a precision flange, and (available) pre-construction brackets; achieve secure, vibration-free efficiency with a simple turn of the patented Rotating Cam system.
  • 4 1/2-inch (11.43cm) long-throw mineral-filled polypropylene cone driver with butyl rubber surround pumps out surprising bass response from a compact design.
  • 3/4-inch (19mm) anodized aluminum dome tweeter with neodymium magnet for better power handling and smoother response.
  • Broad coverage baffle design, adapted and applied from our current Atrium design but with subtle improvements in the new Atrium Series. You want to fill a large open outdoor space with big, full-range sound, The new Atrium Series has a more steeply-angled baffle design that maximizes critical mid- and high-frequency dispersion over a large area, without sacrificing the detail.
  • Polk all-weather certified, Atrium Series speakers exceed baseline industrial and military specifications for environmental endurance (ASTM D5894-UV Salt Fog, Mil Standard 810 Immersion, Mil-Std 883 Method 1009.8 for salt and corrosion.) Certification means Atrium speakers can effortlessly withstand the worst Mother Nature can dish out, whether its extreme temps or heavy rains. With certification like this, your kitchen or bathroom installation is a cakewalk for Polk all-weather speakers.
  • Speed-Lock™ mounting system, for easy, safe one-handed installations even in difficult locations. The greatly simplified mounting procedure means fewer parts to "juggle." Simply mount the bracket and click the speaker into place. Aim it and tighten it down, and finished! Outdoor convenience, indoor sound quality!
  • Durable, mineral-filled polypropylene cabinet design, with molded-in bracing, sounds like a real speaker (not "an outdoor speaker"), and survives years of seasonal changes, for truly great sound, no matter what the weather.
  • Patented Dynamic Balance® and Klippel optimization technologies ensure the perfect material performance, eliminating driver and tweeter "artifacts" for more realistic sound reproduction at high and low volume levels.
  • Aluminum grilles and bracket, with stainless steel and brass hardware: No rust. Ever.
  • Gold-plated 5-way binding posts for the most secure, dependable hookups.
  • Available in durable, weatherproof black or white paintable finishes.
  • All Polk products are made using the best materials and the most advanced manufacturing techniques. They pass the industry's most exhaustive quality tests, including drop testing, extreme signal response and UV & salt exposure testing. Polk loudspeakers are built to perform for a lifetime.

Learn more about the Polk Audio Atrium 4

Warranty, Returns, And Additional Information
  • Warranty
  • Limited Warranty period (parts): 1 year
  • Limited Warranty period (labor): 1 year
  • Read full details

Customer Reviews of the Polk Audio Atrium 4

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  • jon j.
  • 12/16/2014 6:16:39 PM
  • Ownership: more than 1 year

4 out of 5 eggsOwn. Love.

Pros: Small, great, surprisingly good sound.

Cons: Woofer cage is potmetal.

Other Thoughts: These speakers punch well above their weight class. For < three figures, I'd buy them again in a heartbeat. The only real down is that one dropped from a modest height onto a wood floor. From this, the woofer cage bent, and the driver no longer worked. Polk sold me a new driver, all is well. But they should be made from stiffer metal. That aside, these are really great speakers. I highly recommend them. Remember, for proper bass, placement is ALWAYS critical.

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  • Dylan W.
  • 6/23/2014 7:31:54 AM
  • Ownership: more than 1 year
  • Verified Owner

5 out of 5 eggsgreat speakers

Pros: Great sound. I've had them for a year and they have held up well.for outdoor usage. Easy to install. Great price.

Cons: None I can think of.

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  • Darrell M.
  • 6/21/2014 6:30:43 AM
  • Ownership: more than 1 year
  • Verified Owner

5 out of 5 eggsGreat sound if mounted per instructions

Pros: Great full range of sound. Saw some negative reviews of Bass quality and thought I would write a long time user review... I've had these mounted for over a year now in a theatre room in our church, work great. Plenty of bass & highs with only a small 40 watt Lanai(sp?) $20 amp connected. Instructions inform you on mounting close to corners to create a stronger low end (bass) effect. If not for the small amp's treble/bass controls, bass would be too much and distort clarity. Great speakers for the price. , Also mounted 2nd pair outside up near corner of eave for bass, set the desired angle & no regrets.

Cons: At the time they were only white in color selection...but in Florida, probably the best choice anyway for outdoors.

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  • Teresa C.
  • 3/5/2014 4:43:53 AM
  • Ownership: 1 month to 1 year
  • Verified Owner

4 out of 5 eggsPolk Audio Atrium 4 Speakers

Pros: Compact so they are easy to place just about anywhere, clear crisp sound but lacking on the Bass a little for my preference but still a great little speaker.

Cons: None so far

Other Thoughts: These are used inside a shop so I can't give a review for "outdoors" but will be purchasing these again for my deck when there is entertaining to do.

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  • Erick S.
  • 2/6/2013 8:46:23 PM
  • Ownership: 1 week to 1 month
  • Verified Owner

5 out of 5 eggshigh end sound, low end cost

Pros: compact, sturdy construction, great simple mounts and adjustments, amazing sound clarity even on a low end sony receiver (I have them on a STR-DH130)

Cons: none yet

Other Thoughts: when installed under eaves, it is amazing the bass it puts out for its size, not subwoofer bass but tight,clear drum bass. Plays acoustic music beautifully, and will bring new life to all your music. the price can't be beat for the sound these put out

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  • Bobbie R.
  • 1/18/2013 8:27:44 AM
  • Ownership: 1 day to 1 week
  • Verified Owner

5 out of 5 eggsGreat Polk Sound!

Pros: Polk Quality, Polk Sound, Power Handling, Build Quality, Mounting Flexibility.

Cons: None so far.

Other Thoughts: A nice option for an indoor/outdoor speaker for your garage area or where ever you need tunes.

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Item#: 9SIA2GA1K43118
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