---
product_id: 1148871
title: "Atrium 4 Weatherproof Outdoor Speakers with Powerful Bass (Pair, Black), All-Weather Durability, Broad Sound Coverage, Speed-Lock Mounting System"
brand: "polk audio"
price: "€ 324.81"
currency: EUR
in_stock: true
reviews_count: 8
category: "Polk Audio"
url: https://www.desertcart.pt/products/1148871-atrium-4-weatherproof-outdoor-speakers-with-powerful-bass-pair-black
store_origin: PT
region: Portugal
---

# 4.5" dynamic balance woofer One-click Speed-Lock mounting All-weather waterproof design Atrium 4 Weatherproof Outdoor Speakers with Powerful Bass (Pair, Black), All-Weather Durability, Broad Sound Coverage, Speed-Lock Mounting System

**Brand:** polk audio
**Price:** € 324.81
**Availability:** ✅ In Stock

## Summary

> 🌟 Elevate your outdoor vibe with Polk’s powerhouse sound—because your backyard deserves the best!

## Quick Answers

- **What is this?** Atrium 4 Weatherproof Outdoor Speakers with Powerful Bass (Pair, Black), All-Weather Durability, Broad Sound Coverage, Speed-Lock Mounting System by polk audio
- **How much does it cost?** € 324.81 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.pt](https://www.desertcart.pt/products/1148871-atrium-4-weatherproof-outdoor-speakers-with-powerful-bass-pair-black)

## Best For

- polk audio enthusiasts

## Why This Product

- Trusted polk audio brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Compact Yet Powerful:** Sleek 4.5" woofer and aluminum dome tweeter fit anywhere without sacrificing sound quality.
- • **Rich, Balanced Sound:** Dynamic Balance tech delivers crisp highs and deep bass for immersive outdoor audio.
- • **Seamless Integration:** Gold-plated 5-way binding posts ensure easy connection to any modern amplifier or AVR.
- • **Weatherproof Durability:** Built to brave rain, sun, and snow with rustproof aluminum and stainless steel hardware.
- • **Effortless Setup & Mounting:** One-handed Speed-Lock bracket for quick, secure installation—no hassle, no tools needed.

## Overview

The Polk Audio Atrium 4 Weatherproof Outdoor Speakers combine rugged, all-season durability with high-fidelity sound in a compact design. Featuring a 4.5-inch dynamic balance woofer and anodized aluminum dome tweeter, these speakers deliver rich bass and clear highs. Their rustproof construction and Speed-Lock mounting system make installation effortless and reliable, perfect for patios, poolsides, or any outdoor space craving premium audio performance.

## Description

The compact Atrium 4 outdoor outdoor wired speakers produce high-fidelity sound quality anywhere you want great sound. The small size of the powered speakers makes it ideal for tight, out-of-the-way installations. With an aluminum dome tweeter and polypropylene cone driver in each speaker, enjoy deep, accurate bass and smoother response. Polk’s patented Dynamic Balance and Klippel Optimization technologies ensure perfect material performance, eliminating driver and tweeter “artifacts” for more realistic sound reproduction at high and low volume levels. The weatherproof outside speakers feature a rustproof aluminum grille, rustproof aluminum bracket, and stainless steel/brass hardware that can endure seasonal change and deliver indoor speaker-quality audio for years of outdoor listening enjoyment. Quick and easy to install with Polk’s Speed Lock Mounting system.

Review: Polk Audio Never Disappoints – Amazing Outdoor Speakers! 🔊☀️ - I bought a **pair of Polk Audio Atrium 8 SDI speakers** for my **back patio expansion**, and they have been **nothing short of incredible**! The **beautiful design** blends seamlessly with my outdoor space, and they are built to withstand the elements. I paired these with a **SunFire amp**, and the **sound quality is simply awesome**—rich, clear, and powerful, even in an open outdoor environment. Mounting was **easy**, and the build quality feels **top-notch**, exactly what I expect from Polk Audio. I’ve been a **Polk Audio fan for almost 40 years**, and their **reputation for quality and durability** is well-earned. I still have an **older set in my garage that’s over 20 years old**, and they still sound fantastic—**which is exactly why I chose Polk again**! If you're looking for **high-quality outdoor speakers** that will last, these are a no-brainer. **Highly recommend!** 🎶🔥
Review: Nice size and sound quality for outdoor patio space - I purchased these as replacements for outdoor speakers that were installed on a new-to-us house, but that were no longer working. I bought the white version, and they compliment our home's exterior trim color nicely. Installation was a breeze -- each speaker is bolted to the house with two wood bolts, then attach the wire, and that's all there is to it. In my case, I am using a dedicated "left" and "right" speaker setup, so I cannot address how well these work when they are wired with both left and right speaker wires. I can say that you need to slide the switch/contact cover over on the back of the speaker if you are wiring them as "left" or "right" like you would for normal speakers, or else the sound is quite a bit softer. This makes more sense when you look at the unit itself--but there are two ways to wire each speaker, so follow the directions for your application and you'll be fine. As you'd expect, there is not a ton of bass to these speakers, however when connected to a home-owner quality sound system (Sony), they sound quite good as an external speaker, and better than ones that we had at our previous house. I'm hopeful that I can get at least 5 solid years out of these speakers in order to justify the price. We'll see how that works out, but I think Polk quality is quite good for my purposes, and I have confidence that it has been money well spent.

## Features

- EASY INSTALLATION - One-click speed-lock mounting bracket offers anti-slip, one-handed installation. Mount these outdoor speakers wired vertically or horizontally to deliver optimal sound in different setups
- EASY SETUP - Polk outdoor speaker’s gold plated 5-way binding post can easily connect to any modern AVR or amplifier
- ALL WEATHER CERTIFICATION - Rugged durability and premium build make these Outdoor Movie Speakers ready for every season, effortlessly withstanding extreme temperatures, heavy rain, and all elements
- EXCEPTIONALLY GREAT SOUND - High fidelity sound for small-to-medium outdoor areas. These Atrium Polk Audio Outdoor Speakers can be installed anywhere open – by pool, on a patio, inside sunroom, or across the backyard
- ULTRA COMPACT - Compact outdoor loudspeaker for Wall Mount Speakers with a 4.5” dynamic balance polypropylene woofer, ¾” anodized aluminum dome tweeter

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00378KMF0 |
| Audio Driver Type | Dynamic Driver |
| Best Sellers Rank | #2,943 in Electronics ( See Top 100 in Electronics ) #1 in Outdoor Speakers |
| Color | Black |
| Compatible Devices | Desktop, Laptop, Television |
| Control Method | Voice |
| Customer Package Type | Standard Packaging |
| Customer Reviews | 4.6 4.6 out of 5 stars (9,868) |
| Date First Available | February 1, 2010 |
| Global Trade Identification Number | 00747192118792 |
| Impedance | 8 Ohms |
| Included Components | 2 Black all-weather speakers, 2 Mounting brackets (installed), Owner's Manual, Online Product Registration card, Polk Audio brochure |
| Is Discontinued By Manufacturer | No |
| Is Waterproof | TRUE |
| Item Weight | 3.6 pounds |
| Item model number | AM4085-A|4 |
| Manufacturer | DEI Holdings |
| Material | Metal, Plastic |
| Model Name | Atrium 4 |
| Mounting Type | Wall Mount |
| Number Of Circuits | 1 |
| Number of Items | 2 |
| Power Source | Corded Electric |
| Product Dimensions | 6.69"D x 5.69"W x 8.63"H |
| Recommended Uses For Product | For Indoor Use, For Outdoor Use, For Surround Sound Systems |
| Series Number | 747192118792 |
| Set Name | Pair |
| Shape | rectangular prism with rounded edges |
| Signal-to-Noise Ratio | 89 dB |
| Speaker Size | 4.5 Inches |
| Speaker Type | Outdoor |
| Special Feature | Bass Boost, Waterproof |
| Specific Uses For Product | Outdoor Use |
| Style | Atrium 4 |
| Subwoofer Diameter | 4.25 Inches |
| Surround Sound Channel Configuration | 2.0 |
| UPC | 747192118792 |
| Unit Count | 2.0 Count |
| Warranty Type | Limited |
| Water Resistance Level | Waterproof |
| Woofer Diameter | 4.5 Inches |

## Product Details

- **Audio Output Mode:** Surround
- **Brand:** Polk Audio
- **Connectivity Technology:** Ethernet
- **Frequency Response:** 25 KHz
- **Speaker Maximum Output Power:** 80 Watts

## Images

![Atrium 4 Weatherproof Outdoor Speakers with Powerful Bass (Pair, Black), All-Weather Durability, Broad Sound Coverage, Speed-Lock Mounting System - Image 1](https://m.media-amazon.com/images/I/71KgV5mMghL.jpg)

## Available Options

This product comes in different **Color, Size, Style** options.

## Questions & Answers

**Q: We do not have a covered deck. Could these outdoor speakers be totally exposed to the outdoor element?**
A: I have installed these speakers totally exposed and they have lasted several years the grills might become rusty looking depending on the area you're in

**Q: Are these compatible with Alexa/Echo Dot?**
A: These are not Bluetooth speakers so they will not work directly with Echos or Dots and need to be powered by an audio receiver. You can however, use an RCA or Bluetooth connection between an Echo or Dot and the reciever and stream to the speakers.

**Q: Is it two packs of pairs being a total of 4 speakers?**
A: No the 4 is for the size and model, there is only 2 speakers in the box!
These are Great Speakers!!!

**Q: Is it easy to be operated? I hope it will be not too hard to do that...**
A: …Were very easy to set up, and I just connected to the amplifier and then to the record player.…You can buy this amplifier if you are a lack of it.https://www.amazon.com/Bluetooth-Amplifier-Receiver-Integrated-Audio/dp/B07L3F5QQ7

## Customer Reviews

### ⭐⭐⭐⭐⭐ Polk Audio Never Disappoints – Amazing Outdoor Speakers! 🔊☀️
*by F***Y on April 4, 2025*

I bought a **pair of Polk Audio Atrium 8 SDI speakers** for my **back patio expansion**, and they have been **nothing short of incredible**! The **beautiful design** blends seamlessly with my outdoor space, and they are built to withstand the elements. I paired these with a **SunFire amp**, and the **sound quality is simply awesome**—rich, clear, and powerful, even in an open outdoor environment. Mounting was **easy**, and the build quality feels **top-notch**, exactly what I expect from Polk Audio. I’ve been a **Polk Audio fan for almost 40 years**, and their **reputation for quality and durability** is well-earned. I still have an **older set in my garage that’s over 20 years old**, and they still sound fantastic—**which is exactly why I chose Polk again**! If you're looking for **high-quality outdoor speakers** that will last, these are a no-brainer. **Highly recommend!** 🎶🔥

### ⭐⭐⭐⭐⭐ Nice size and sound quality for outdoor patio space
*by R***B on September 1, 2022*

I purchased these as replacements for outdoor speakers that were installed on a new-to-us house, but that were no longer working. I bought the white version, and they compliment our home's exterior trim color nicely. Installation was a breeze -- each speaker is bolted to the house with two wood bolts, then attach the wire, and that's all there is to it. In my case, I am using a dedicated "left" and "right" speaker setup, so I cannot address how well these work when they are wired with both left and right speaker wires. I can say that you need to slide the switch/contact cover over on the back of the speaker if you are wiring them as "left" or "right" like you would for normal speakers, or else the sound is quite a bit softer. This makes more sense when you look at the unit itself--but there are two ways to wire each speaker, so follow the directions for your application and you'll be fine. As you'd expect, there is not a ton of bass to these speakers, however when connected to a home-owner quality sound system (Sony), they sound quite good as an external speaker, and better than ones that we had at our previous house. I'm hopeful that I can get at least 5 solid years out of these speakers in order to justify the price. We'll see how that works out, but I think Polk quality is quite good for my purposes, and I have confidence that it has been money well spent.

### ⭐⭐⭐⭐⭐ Great sounding speakers
*by T***T on November 7, 2025*

These Polk Atrium 6's really are a great sounding set of speakers. I embarked on setting up a "Zone 2" set of outdoor speakers on my back patio, which will eventually run off a spare Marantz AVR (SR5009) that I have in the garage, daisy-chained to a Marantz 8802 in my living room. I really wanted to take some time to compare some speakers before making a decision, and decided to try the Polk Atrium 6, Klipsch AW-650, and two speakers from OSD - the AP640 and AP650. I disconnected my beloved B&W CDM-6NT tower speakers and hooked each of the candidate speakers up to a great sounding Jolida tube amp with Denon CD player, running each of them through jazz, various rock, and country selections including Stan Getz, live Allman Brothers, Dave Brubeck, etc. I pretty much ruled out the OSD AP640 right away - they were very hollow and underwhelming for my taste. The AP650's were better (IMO), perhaps tighter (enclosed box) but still seemed to lack some bandwidth, and the low-end just wasn't doing it for me, although I realize these are small outdoor speakers and don't expect to shake any windows with them. Had I bought them by themselves, I probably would have liked them better but they just didn't stack up to the Klipsch or Polk's. I really liked the Klipsch AW-650's, but trying them side by side with the Polk's, my ears couldn't help but prefer the Atrium 6's. The Atrium 6's just did it for me - warm, crystal clear, neutral sound across the spectrum and surprisingly I like their lower frequency response over the Klipsch AW-650's, which have a larger driver in them. I ended up leaving the Polk Atrium 6's hooked up in my living room last night, switched them over to my Marantz AV-8802/Outlaw Audio 5000X (AVR & amp) system, and watched some programming on Netflix. Using the Atrium 6's as my Right/Left channels, they did well paired with my center channel and subwoofer, and this morning I'm still enjoying them immensely - they're back on the tube amp, and playing Miles Davis, Kind of Blue, in the other room while I type this. Horns and piano are remarkably clear from here (50' away), and string bass is very natural and enjoyable - I can hear it very clearly even with the amp running at low volume in the other room. As a side note, I passed on the Klipsch AW-650's but did like them - I think if I were placing speakers in a larger outdoor area, perhaps to send sound across a pool and larger patio area, I may have kept them instead. In the end I just really preferred the natural, intimate sound of the Polk Atrium 6's. If I had anything negative to say about the Polk's, it's nothing to do with sound but rather with what I see as a design oversight on the speaker connections themselves. If you prefer to use banana plugs, over the binding posts, be forewarned that there isn't a whole lot of room to plug them in - the speaker connections are recessed in the back of the speaker and even though they're angled slightly, there isn't much room between them and the speaker enclosure - I couldn't use my banana plugs to hook them up without feeling like I was going to bend or break something, so opted to use the binding posts instead. Not a deal breaker but seriously this should have been addressed in engineering. Nevertheless I HIGHLY recommend giving these a try - happy listening!

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*Product available on Desertcart Portugal*
*Store origin: PT*
*Last updated: 2026-03-20*