---
product_id: 60641790
title: "Atrium 4 Outdoor Speakers (Pair, Black) | Full-Range Audio, 4.5\" Polymer Cone, All-Weather Durability - Marine & Pool Compatible, Easy Speed-Lock Mounting System"
brand: "polk audio"
price: "$592.82"
currency: USD
in_stock: true
category: "Polk Audio"
url: https://www.desertcart.us/products/60641790-atrium-4-outdoor-speakers-pair-black-full-range-audio-4
store_origin: US
region: United States of America
---

# Wide 4.5" driver + 3/4" tweeter for clear sound 80W max output power All-weather certified & waterproof Atrium 4 Outdoor Speakers (Pair, Black) | Full-Range Audio, 4.5" Polymer Cone, All-Weather Durability - Marine & Pool Compatible, Easy Speed-Lock Mounting System

**Brand:** polk audio
**Price:** $592.82
**Availability:** ✅ In Stock

## Summary

> 🌟 Elevate your outdoor vibe with Polk Atrium 4 — sound that’s as unstoppable as your lifestyle!

## Quick Answers

- **What is this?** Atrium 4 Outdoor Speakers (Pair, Black) | Full-Range Audio, 4.5" Polymer Cone, All-Weather Durability - Marine & Pool Compatible, Easy Speed-Lock Mounting System by polk audio
- **How much does it cost?** $592.82 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/60641790-atrium-4-outdoor-speakers-pair-black-full-range-audio-4)

## 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

- • **Powerful 80W Output:** Fill your outdoor space with rich, room-filling sound that commands attention.
- • **Precision Audio Drivers:** Dynamic 4.5" woofer and 3/4" tweeter deliver crisp highs and balanced mids for premium clarity.
- • **Built to Brave the Elements:** Military-grade weatherproofing means rain, salt fog, or heat won’t stop your soundtrack.
- • **Sleek, Durable & Customizable:** Compact, paintable finish blends seamlessly with your outdoor décor while resisting rust and wear.
- • **Flexible Mounting, Flawless Sound:** Speed Lock bracket lets you position speakers horizontally or vertically for perfect sound alignment.

## Overview

The Polk Audio Atrium 4 Outdoor Speakers are a pair of compact, high-fidelity speakers designed for outdoor use. Featuring a 4.5-inch dynamic balance woofer and a 3/4-inch dome tweeter, they deliver clear, wide sound with impressive bass for their size. Built to exceed industrial and military weatherproof standards, these speakers withstand extreme temperatures, rain, and salt fog. The Speed Lock mounting system allows versatile installation, while durable, paintable finishes and rust-resistant fittings ensure long-lasting performance. Ideal for professionals seeking premium sound in any outdoor setting.

## Description

Shop Polk Audio Atrium 4 Outdoor Speakers (Pair, Black). Free delivery and returns on eligible orders.

## Features

- The Atrium Loudspeaker produces high fidelity sound quality anywhere you want^Improved baffle design allowing broader coverage^Polk Audio all weather certified^Exceeds baseline industrial and military specifications for environmental endurance^Durable weatherproof finish which is paintable

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00378KMF0 |
| Age Range Description | Adult |
| Antenna Location | For indoor use, For surround sound systems, Suitable for outdoor use |
| Audio Driver Size | 11.4 Centimetres |
| Audio Driver Type | Dynamic Driver |
| Audio Output Mode | Stereo |
| Best Sellers Rank | 29,313 in Electronics & Photo ( See Top 100 in Electronics & Photo ) 32 in Outdoor Speakers |
| Box Contents | 2 black all-weather speakers, 2 brackets (installed), instruction manual (English language not guaranteed). Online product registration card, Polk Audio brochure |
| Brand Name | Polk Audio |
| Colour | black |
| Compatible Devices | Desktop, Laptop, Television |
| Compatible with Vehicle Type | Car |
| Connectivity Protocol | Ethernet |
| Control Method | Voice |
| Controller Type | Wired electrical |
| Country of Origin | Vietnam |
| Customer Package Type | Standard packaging |
| Customer Reviews | 4.6 4.6 out of 5 stars (5,808) |
| EU Spare Part Availability Duration | 7 Years |
| Enclosure Material | Plastic Metal |
| Frequency Response | 25 |
| Global Trade Identification Number | 00747192118792 |
| Is Waterproof | TRUE |
| Item Dimensions D x W x H | 17D x 14.4W x 21.9H centimetres |
| Item Weight | 3.6 Pounds |
| MP3 player | No |
| Manufacturer | Polk Audio |
| Maximum Speaker Output Power (in watts) | 80 Watts |
| Model Name | Audio Atrium 4 |
| Model Number | AM4085-A|4 |
| Mounting Type | Wall Mount |
| Network Connectivity Technology | Wired |
| Number Of Circuits | 1 |
| Number of Audio Channels | 2.0 |
| Number of Items | 2 |
| Number of Power Levels | 1 |
| Power Source | Amplifier Powered |
| Product Features | Weatherproof |
| Series Number | 747192118792 |
| Signal-to-Noise Ratio | 89 dB |
| Speaker Size | 4.5 Inches |
| Speaker Type | Outdoor |
| Specific Uses For Product | Outdoor Use |
| Subwoofer Connectivity Technology | Wired |
| Subwoofer Speaker Diameter | 4.25 Inches |
| Tweeter Diameter | 19.1 Millimetres |
| UPC | 747192118792 |
| Unit Count | 2.0 count |
| Warranty Type | Limited |
| Water Resistance Level | Waterproof |
| Wireless Technology Type | No Wireless Communication Technology |
| Woofer Driver Diameter | 4.5 Inches |

## Product Details

- **Audio output mode:** Stereo
- **Brand:** Polk Audio
- **Connectivity technology:** Wired
- **Frequency response:** 25
- **Material:** Plastic Metal
- **Model name:** Audio Atrium 4
- **Mounting type:** Wall Mount
- **Speaker maximum output power:** 80 Watts
- **Speaker type:** Outdoor
- **Special feature:** Weatherproof

## Images

![Atrium 4 Outdoor Speakers (Pair, Black) | Full-Range Audio, 4.5" Polymer Cone, All-Weather Durability - Marine & Pool Compatible, Easy Speed-Lock Mounting System - Image 1](https://m.media-amazon.com/images/I/71KgV5mMghL.jpg)

## Available Options

This product comes in different **Color** 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

## Frequently Bought Together

- Polk Audio Atrium 4 Outdoor Speakers with Powerful Bass (Pair, Black), All-Weather Durability, Broad Sound Coverage, Speed-Lock Mounting System
- Fosi Audio BT20A Bluetooth Stereo Amplifier, 2 Channel Home Audio Component Amplifiers for Passive Speakers, Mini Class D Amp Receiver 200W for Indoor/Outdoor/Garage/Ceiling/Bookshelf Speaker
- GearIT Outdoor Speaker Wire CCA 2x2.5mm≤ (60.96 Meters - Black) Copper Clad Aluminum - Hi-Fi Audio Cable for Direct Burial in Ground/in Wall / CL3 CL2 Rated / 2-Conductors - 14 Gauge AWG, 200 Feet

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-08-24*