---
product_id: 2391526
title: "BOSS Audio Systems BRS40 4 Inch Replacement Car Door Speaker - 50 Watts Max, Sold in Individually"
brand: "boss audio systems"
price: "€ 63.03"
currency: EUR
in_stock: true
reviews_count: 13
url: https://www.desertcart.it/products/2391526-boss-audio-systems-brs40-4-inch-replacement-car-door-speaker
store_origin: IT
region: Italy
---

# 100Hz-18kHz frequency range 4-inch driver size 50W max power BOSS Audio Systems BRS40 4 Inch Replacement Car Door Speaker - 50 Watts Max, Sold in Individually

**Brand:** boss audio systems
**Price:** € 63.03
**Availability:** ✅ In Stock

## Summary

> 🔊 Upgrade your ride’s soundtrack with BOSS-level clarity!

## Quick Answers

- **What is this?** BOSS Audio Systems BRS40 4 Inch Replacement Car Door Speaker - 50 Watts Max, Sold in Individually by boss audio systems
- **How much does it cost?** € 63.03 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.it](https://www.desertcart.it/products/2391526-boss-audio-systems-brs40-4-inch-replacement-car-door-speaker)

## Best For

- boss audio systems enthusiasts

## Why This Product

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

## Key Features

- • **Wide Frequency Range:** Experience rich lows and crisp highs from 100Hz to 18kHz.
- • **Compact 4-Inch Design:** Perfect fit for seamless door replacement without hassle.
- • **Powerful 50W Max Output:** Feel every beat with crystal-clear sound that fills your car.
- • **3-Year Platinum Warranty:** Confidence backed by BOSS Audio’s trusted reliability.
- • **Durable Polypropylene Cone:** Engineered for long-lasting performance and minimal distortion.

## Overview

The BOSS Audio Systems BRS40 is a 4-inch replacement car door speaker delivering up to 50 watts max power with a 4-ohm impedance. Featuring a polypropylene cone and foam surround, it offers a frequency response from 100Hz to 18kHz and 82 dB sensitivity for clear, dynamic sound. Compact and easy to install, it comes with a 3-year platinum warranty, making it a reliable upgrade for any vehicle audio system.

## Description

desertcart.com: BOSS Audio Systems BRS40 4 Inch Replacement Car Door Speaker - 50 Watts Max, Sold in Individually : Electronics

Review: Great purchase! Great quality for the money! - OEM Quality sound. Replaced a door speaker. No amps or anything
Review: I PURCHASED 5 BOSS AUDIO ITEMS - This review includes the BOSS Audio - BRS 6x9 speakers, BOSS AVA6200 speakers, and the BOSS Audio 616UAB multimedia player. I have purchased other very elaborate, and expensive car audio systems, and either they did not last long, or I was disappointed in some other way. But the multimedia player I mentioned made me BOSS Audio fan. It is very reliable, tough, long lasting, and has excellent sound quality. I built, and completely modified a 2015 Toyota Tacoma inside out, and from the ground up. The same above mentioned BOSS Audio speakers, and media player is what is in my build. The sound is very strong, clear, and excellent. I do not play my music to deafening level, but at a moderate volume. I am very picky to sound, and simplicity. I do not get involved with subwoofer competitions, while sagging my pants, and picking my nose. I just wanted excellent sound.

## Features

- Dimensions: 4.06 x 4.06 x 1.80 inches
- Impedance: 4 ohms
- Item Weight: 0.87 Lbs.
- Mounting Depth: 1.75 inches, Mounting Hole: 4.01 inches
- Frequency Response: 100 Hz to 18 KHz
- Sensitivity: 82 dB @ 1 watt/1 meter
- Polypropylene Cone, Foam Surround
- Stamped Basket, 0.77 Inch Voice Coil
- BOSS Audio Systems provides a powerful 3-year platinum online dealer warranty. We strongly encourage professional installation of this product to ensure proper and safe functionality

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B001RNNX8K |
| Audio Driver Type | Dynamic Driver |
| Batteries | 1 12V batteries required. |
| Best Sellers Rank | #7,024 in Electronics ( See Top 100 in Electronics ) #34 in Car Coaxial Speakers |
| Compatible Devices | Desktop, Karaoke Machine, Laptop, MP3 Player, Smartphone, Tablet |
| Control Method | Touch |
| Customer Package Type | Standard Packaging |
| Customer Reviews | 4.2 4.2 out of 5 stars (4,981) |
| Date First Available | December 15, 2008 |
| Global Trade Identification Number | 00791489110341, 00999994548769 |
| Impedance | 4 Ohms |
| Included Components | Speaker |
| Is Discontinued By Manufacturer | No |
| Is Waterproof | False |
| Item Weight | 13.9 ounces |
| Item model number | BRS40 |
| Manufacturer | BOSS Audio Systems |
| Material | Plastic Or Metal |
| Maximum Range | 25 Meters |
| Model Name | BRS40 |
| Number of Batteries | 1 12V batteries required. |
| Number of Items | 1 |
| Power Source | Corded Electric |
| Product Dimensions | 4.06"D x 4.06"W x 1.8"H |
| Recommended Uses For Product | car |
| Shape | rectangular prism |
| Speaker Size | 4 Inches |
| Speaker Type | Coaxial |
| Special Feature | Radio |
| Style | 4" Speaker |
| Subwoofer Connectivity Technology | Wired |
| Subwoofer Diameter | 4 Inches |
| Surround Sound Channel Configuration | 4.1 |
| Tweeter Diameter | 4.01 Inches |
| UPC | 523161112950 999994548769 999994339039 617407313352 809186297385 328996141256 070071263581 072090792981 809385692271 100010956615 014445412151 791489110341 |
| Unit Count | 1.0 Count |
| Warranty Type | Extended |
| Water Resistance Level | Not Water Resistant |
| Woofer Diameter | 4 Inches |

## Product Details

- **Audio Output Mode:** Stereo
- **Brand:** BOSS Audio Systems
- **Connectivity Technology:** Coaxial
- **Mounting Type:** Flush Mount
- **Speaker Maximum Output Power:** 50 Watts

## Images

![BOSS Audio Systems BRS40 4 Inch Replacement Car Door Speaker - 50 Watts Max, Sold in Individually - Image 1](https://m.media-amazon.com/images/I/71Qu5c+NIEL.jpg)
![BOSS Audio Systems BRS40 4 Inch Replacement Car Door Speaker - 50 Watts Max, Sold in Individually - Image 2](https://m.media-amazon.com/images/I/81dc4myOVKL.jpg)
![BOSS Audio Systems BRS40 4 Inch Replacement Car Door Speaker - 50 Watts Max, Sold in Individually - Image 3](https://m.media-amazon.com/images/I/711nuqPvviL.jpg)
![BOSS Audio Systems BRS40 4 Inch Replacement Car Door Speaker - 50 Watts Max, Sold in Individually - Image 4](https://m.media-amazon.com/images/I/71dgTcxKaXL.jpg)
![BOSS Audio Systems BRS40 4 Inch Replacement Car Door Speaker - 50 Watts Max, Sold in Individually - Image 5](https://m.media-amazon.com/images/I/71U+ROx3iqL.jpg)

## Available Options

This product comes in different **Style** options.

## Questions & Answers

**Q: What is the ohm rating on these speakers?**
A: 4 ohm's

**Q: Does this fit 2011 Ram 1500 dash speaker?**
A: The only sure way to tell is to take out the old speaker and measure it. If yours is not the size of the BRS35, there are other sizes available.

**Q: is it important to use the plastic mounting ring?**
A: Not if the speaker fits without them.  I installed them in the front doors in my old Escort without them and they work fine.

**Q: Is it a pair of speakers or just one speaker?**
A: Just one at a time. So you really have to order 2 of them if you need a pair.

Sold at unit.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great purchase! Great quality for the money!
*by R***D on October 26, 2025*

OEM Quality sound. Replaced a door speaker. No amps or anything

### ⭐⭐⭐⭐⭐ I PURCHASED 5 BOSS AUDIO ITEMS
*by M***R on April 15, 2024*

This review includes the BOSS Audio - BRS 6x9 speakers, BOSS AVA6200 speakers, and the BOSS Audio 616UAB multimedia player. I have purchased other very elaborate, and expensive car audio systems, and either they did not last long, or I was disappointed in some other way. But the multimedia player I mentioned made me BOSS Audio fan. It is very reliable, tough, long lasting, and has excellent sound quality. I built, and completely modified a 2015 Toyota Tacoma inside out, and from the ground up. The same above mentioned BOSS Audio speakers, and media player is what is in my build. The sound is very strong, clear, and excellent. I do not play my music to deafening level, but at a moderate volume. I am very picky to sound, and simplicity. I do not get involved with subwoofer competitions, while sagging my pants, and picking my nose. I just wanted excellent sound.

### ⭐⭐⭐⭐ Of all the speakers out there, these are some of them.
*by M***. on April 5, 2025*

They sure do speak, I tell you what. These won't blow you away. I needed some cheap speakers to just have a functioning audio system in my 90s Honda. It'll sound like an OEM system from the late 90s, and you'll be totally okay with that. And while you're not blowing out windows 3 blocks down, they do a decent job of producing decent sound for a pretty decent price. They fit right in, look like OEM speakers, and there are lots of screw holes for whatever zany setup the manufacturer of your car had going on.

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*Product available on Desertcart Italy*
*Store origin: IT*
*Last updated: 2026-03-05*