Are these original speakers?

No, there were speakers long before these existed.

Does it need to be plugged in at all times?

These speakers require speaker wire to be connected to them when being listened to. There is no power cable to be plugged in.

Is this a single speaker or a pair of speakers?

Since this question was asked regarding the Atrium 8 version but Amazon shows it under both the 6 and 8 version, the Atrium 8 version is sold as a single speaker. The Atrium 6 version (and smaller) are sold as pairs.

What is the rms wattage per speaker? I cannot get a straight answer!

Polk claims they will handle up to 125 watts per channel, but with a sensitivity of 91dB 《8 ohm) these speakers get very loud quickly. I have an older Technics H class receiver (100 watts p/ch) & have never pushed over half volume on my pair. Note: I do enjoy cranking it up. With a freq. response of 45 - 27,000Hz, I found a sub wasn't needed. Placement, area & environment ( walls, height, corner availability) make a big difference when installing them correctly, but wattage shouldn't be a concern. These speakers are a great buy for the price.

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Polk Audio Atrium 8 SDI Flagship All-Weather Outdoor Speaker (Each, Black)

Product ID: 1159312

Details

Audio Output Mode
Stereo
Brand
Polk Audio
Connectivity Technology
Optical
Frequency Response
27000 hertz
Speaker Maximum Output Power
125 watts

🔊6.5” Dynamic Balance woofer for rich sound

⚙️One-click speed-lock mounting for easy install

🌧️All-weather certified for extreme conditions

¥119091

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Sold byAmazon JapanDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🎶 Elevate your outdoor vibe with Polk’s all-weather sonic powerhouse!

FLEXIBLE SETUP - Single/dual input switch lets you customize as a powerful mono or stereo pair.
EFFORTLESS MOUNTING - Anti-slip, one-handed speed-lock bracket makes installation a breeze—vertical or horizontal.
IMMERSIVE SOUNDSTAGE - Dual tweeters plus 6.5” woofer deliver crisp highs and deep bass for patio-perfect audio.
WEATHERPROOF WARRIOR - Built to brave rain, salt-fog, UV, and extreme temps without missing a beat.
SEAMLESS CONNECTIVITY - Gold-plated 5-way binding posts ensure rock-solid wired connections to any modern amplifier.

The Polk Audio Atrium 8 SDI is a rugged, all-weather outdoor speaker featuring a 6.5-inch Dynamic Balance woofer and dual anodized aluminum dome tweeters. Designed for small to medium outdoor spaces, it offers high-fidelity stereo sound with flexible single or dual input modes. Its durable powder-coated aluminum enclosure and stainless steel hardware withstand harsh elements, while the one-click speed-lock mounting bracket ensures quick, secure installation. Compatible with wired amplifiers, it delivers premium audio performance rain or shine.

Specifications

ASIN	B00378KMIC
Additional Features	Radio
Age Range Description	Adult
Antenna Location	Music,Pool,Indoor,Outdoor
Audio Driver Size	6.5 inches
Audio Driver Type	Dynamic Driver
Audio Output Mode	Stereo
Best Sellers Rank	#2,211 in Electronics ( See Top 100 in Electronics ) #3 in Outdoor Speakers
Brand	Polk Audio
Built-In Media	Mounting Bracket
Color	Black
Compatible Devices	Laptop, Personal Computer, Smartphone
Connectivity Protocol	Bluetooth
Connectivity Technology	Optical
Control Method	Voice
Controller Type	Wired electrical
Customer Package Type	Standard Packaging
Customer Reviews	4.6 4.6 out of 5 stars (1,007)
Enclosure Material	Powder-coated aluminum
Frequency Response	27000 hertz
Global Trade Identification Number	00747192118891
Impedance	8 ohm
Is Waterproof	True
Item Dimensions D x W x H	9.2"D x 8.5"W x 12.9"H
Item Weight	9.7 pounds
Manufacturer	Polk Audio
Maximum Range	10 meters
Model Name	ATRIUM8B
Model Number	AM8085-A
Mounting Type	180° Speed-Lock mounting
Number of Audio Channels	2
Number of Batteries	1 Lithium Ion batteries required.
Number of Items	1
Series Number	8
Speaker Maximum Output Power	125 watts
Speaker Size	6.5 inches
Speaker Type	Outdoor
Specific Uses For Product	Indoor and outdoor use
Subwoofer Connectivity Technology	Wired
Subwoofer Diameter	6.5 inches
UPC	747192118891
Unit Count	1 Count
Warranty Description	years parts and labor
Warranty Type	Limited
Water Resistance Level	Water Resistant
Wireless Technology	Bluetooth
Woofer Diameter	6.5 inches

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Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

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Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

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TrustScore 4.5 | 7,300+ reviews

Rajesh P.

Customer service was outstanding when I had questions about the product.

2 days ago

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The product exactly matches the description. Very satisfied with my purchase.

5 days ago

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¥119091

Duties & taxes included

In stock

Sold byAmazon JapanDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Japan.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Abdullah B.

Great price for an authentic product. Fast international shipping too!

3 weeks ago

Meera L.

Smooth transaction and product arrived in perfect condition.

3 weeks ago

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