---
product_id: 218538406
title: "BRS40 50 Watt, 4 Inch, Full Range, Replacement Car Speaker - Sold Individually"
brand: "boss audio systems"
price: "€ 47.83"
currency: EUR
in_stock: true
reviews_count: 6
category: "Boss Audio Systems"
url: https://www.desertcart.nl/products/218538406-brs40-50-watt-4-inch-full-range-replacement-car-speaker
store_origin: NL
region: Netherlands
---

# 4 Ohm impedance 100Hz-18kHz frequency range 50W max power BRS40 50 Watt, 4 Inch, Full Range, Replacement Car Speaker - Sold Individually

**Brand:** boss audio systems
**Price:** € 47.83
**Availability:** ✅ In Stock

## Summary

> 🚗 Upgrade your drive with sound that commands attention!

## Quick Answers

- **What is this?** BRS40 50 Watt, 4 Inch, Full Range, Replacement Car Speaker - Sold Individually by boss audio systems
- **How much does it cost?** € 47.83 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.nl](https://www.desertcart.nl/products/218538406-brs40-50-watt-4-inch-full-range-replacement-car-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

- • **Powerful 50W Output:** Experience crisp, clear sound that fills your car with rich audio energy.
- • **Wide Frequency Range:** From deep lows at 100Hz to sparkling highs at 18kHz, enjoy full-range sound clarity.
- • **Precision 4 Ohm Impedance:** Optimized for seamless compatibility with most car audio systems, ensuring efficient power use.
- • **Durable Polypropylene Cone:** Engineered for longevity and consistent performance, even on the bumpiest rides.
- • **Easy Flush Mount Installation:** Sleek design fits perfectly in your car door for a clean, professional upgrade.

## Overview

The BOSS Audio Systems BRS40 is a 4-inch, 50-watt max power full-range car speaker designed for replacement use. Featuring a 4 Ohm impedance and a frequency response spanning 100 Hz to 18 kHz, it delivers balanced, dynamic sound. Its polypropylene cone and foam surround ensure durability and quality, while the flush mount design allows for easy installation. Backed by a 3-year warranty, this speaker is a reliable upgrade for any vehicle audio system.

## Description

BOSS Audio Systems BRS40 4 Inch Replacement Car Door Speaker - 50 Watts Max, Sold in Individually

Review: Size - Good quality
Review: 音は良かった - 車に備え付けのダッシュボードスピーカーの音ががっかりだったので 同サイズのこのスピーカーが意外に格安だったので購入 低音は満足のいく音でした。高音もう少し出てくれると更に良かったのですが 良く見なかった自分が悪かったのですがペア（２個）価格かと思って購入したら １個でした。（慌てて追加購入しました(^_^;)）

## Features

- Impedance: 4 Ohms, Frequency Response: 100 Hz - 18 kHz, Sensitivity: 82 dB
- Cone: Polypropylene, Voice Coil: 1 Inch Aluminum
- Surround: Foam, Basket: Stamped
- Dimensions: Depth 4.1” x Width 4.1” x Height 1.8”, Weight Per Pair: 1 Lbs.
- 3 Year Platinum Online Dealer Warranty

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B001RNNX8K |
| Age Range Description | Adult |
| Antenna Location | For music players |
| Audio Driver Type | Dynamic Driver |
| Audio Output Mode | Surround |
| Audio output mode | Surround |
| Battery Average Life | 5 Hours |
| Best Sellers Rank | 50,526 in Electronics & Photo ( See Top 100 in Electronics & Photo ) 134 in Coaxial Car Speakers |
| Box Contents | Speaker |
| Brand | BOSS Audio Systems |
| Brand Name | BOSS Audio Systems |
| Colour | Black |
| Compatible Devices | Desktop, Karaoke Machine, Laptop, MP3 Player, Smartphone, Tablet |
| Compatible with Vehicle Type | Bus, Car, RV, Tractor, Truck, Van |
| Connectivity Protocol | USB |
| Connectivity technology | Coaxial |
| Control Method | Touch |
| Controller Type | Touch Control |
| Country of Origin | China |
| Customer Package Type | Standard Packaging |
| Customer Reviews | 4.2 out of 5 stars 4,807 Reviews |
| Enclosure Material | Polypropylene, Aluminum |
| Frequency Response | 18 KHz |
| Frequency response | 18 KHz |
| Global Trade Identification Number | 00791489110341, 00999994548769 |
| Impedance | 4 Ohms |
| Is Waterproof | False |
| Item Dimensions D x W x H | 10.3D x 10.3W x 4.6H centimetres |
| Item Weight | 395 g |
| MP3 player | No |
| Manufacturer | BOSS Audio Systems |
| Maximum Range | 25 Metres |
| Maximum Speaker Output Power (in watts) | 50 Watts |
| Model Name | BRS40 |
| Model Number | BRS40 |
| Mounting Type | Flush Mount |
| Mounting type | Flush Mount |
| Network Connectivity Technology | Coaxial |
| Number of Audio Channels | 5.1 |
| Number of Batteries | 1 12V batteries required. |
| Number of Items | 1 |
| Power Source | Corded Electric |
| Product Features | Radio |
| Speaker Size | 4 Inches |
| Speaker Type | Component |
| Speaker maximum output power | 50 Watts |
| Specific Uses For Product | car audio systems replacement |
| Subwoofer Connectivity Technology | Wired |
| Subwoofer Speaker Diameter | 4 Inches |
| 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 | Limited |
| Water Resistance Level | Not Water Resistant |
| Wireless Technology Type | No Wireless Communication Technology |
| Woofer Driver Diameter | 4 Inches |

## Product Details

- **Audio output mode:** Surround
- **Brand:** BOSS Audio Systems
- **Connectivity technology:** Coaxial
- **Frequency response:** 18 KHz
- **Material:** Polypropylene, Aluminum
- **Model name:** BRS40
- **Mounting type:** Flush Mount
- **Speaker maximum output power:** 50 Watts
- **Speaker type:** Component
- **Special feature:** Radio

## Images

![BRS40 50 Watt, 4 Inch, Full Range, Replacement Car Speaker - Sold Individually - Image 1](https://m.media-amazon.com/images/I/71Qu5c+NIEL.jpg)
![BRS40 50 Watt, 4 Inch, Full Range, Replacement Car Speaker - Sold Individually - Image 2](https://m.media-amazon.com/images/I/81dc4myOVKL.jpg)
![BRS40 50 Watt, 4 Inch, Full Range, Replacement Car Speaker - Sold Individually - Image 3](https://m.media-amazon.com/images/I/711nuqPvviL.jpg)
![BRS40 50 Watt, 4 Inch, Full Range, Replacement Car Speaker - Sold Individually - Image 4](https://m.media-amazon.com/images/I/71dgTcxKaXL.jpg)
![BRS40 50 Watt, 4 Inch, Full Range, Replacement Car Speaker - Sold 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

### ⭐⭐⭐⭐⭐ Size
*by T***. on 15 January 2026*

Good quality

### ⭐⭐⭐⭐⭐ 音は良かった
*by L***C on 29 January 2024*

車に備え付けのダッシュボードスピーカーの音ががっかりだったので 同サイズのこのスピーカーが意外に格安だったので購入 低音は満足のいく音でした。高音もう少し出てくれると更に良かったのですが 良く見なかった自分が悪かったのですがペア（２個）価格かと思って購入したら １個でした。（慌てて追加購入しました(^_^;)）

### ⭐⭐⭐⭐⭐ Great deal
*by A***. on 20 August 2021*

As a OEM replacement it's very good, and it came with universal bracket. I removed OEM plug female from the original speaker and put it on the new one. Works like a charm

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**Shop now:** [https://www.desertcart.nl/products/218538406-brs40-50-watt-4-inch-full-range-replacement-car-speaker](https://www.desertcart.nl/products/218538406-brs40-50-watt-4-inch-full-range-replacement-car-speaker)

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*Product available on Desertcart Netherlands*
*Store origin: NL*
*Last updated: 2026-06-19*