---
product_id: 259531265
title: "Brs40 50 Watt, 4 Inch, Full Range, Replacement Car Speaker - Sold Individually"
brand: "boss audio systems"
price: "€ 40.40"
currency: EUR
in_stock: false
reviews_count: 5
category: "Boss Audio Systems"
url: https://www.desertcart.pt/products/259531265-brs40-50-watt-4-inch-full-range-replacement-car-speaker
store_origin: PT
region: Portugal
---

# 4 Ohm impedance for crisp clarity 100Hz-18kHz frequency range 50W max output power Brs40 50 Watt, 4 Inch, Full Range, Replacement Car Speaker - Sold Individually

**Brand:** boss audio systems
**Price:** € 40.40
**Availability:** ❌ Out of 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?** € 40.40 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.pt](https://www.desertcart.pt/products/259531265-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 booming sound that fills your ride with clarity and punch.
- • **Wide Frequency Range:** From deep lows to clear highs, enjoy a full spectrum sound experience.
- • **3-Year Platinum Warranty:** Confidence backed by a trusted warranty for worry-free upgrades.
- • **Precision 4 Ohm Impedance:** Optimized for seamless compatibility and distortion-free audio.
- • **Durable Polypropylene Cone:** Engineered for longevity and consistent performance on the road.

## Overview

The Boss Audio Systems BRS40 is a 4-inch full-range replacement car speaker delivering up to 50 watts of power with a 4 Ohm impedance and a frequency response spanning 100 Hz to 18 kHz. Featuring a durable polypropylene cone and foam surround, it ensures clear, dynamic sound tailored for vehicle audio systems. Sold individually and backed by a 3-year platinum warranty, it’s the smart choice for millennial professionals seeking affordable, high-quality in-car audio upgrades.

## Description

4-Inch Dual Cone Replacement Speaker, Individually Packaged In Clamshell

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(^_^;)）
Review: Good boom for the price - For the price, which is simply incredible, these are 5-star speakers. I picked up 2 for a home stereo project (bookshelf mini-speakers). They arrived incredibly fast and were clam-shelled for extra protection. See picture below for contents. Speaker is 4" square. The leads are marked, but it is really faint; I used a flashlight to read the polarities. Speakers were tested on a Pioneer amp. At 25 watts (4 Ohm impedance) they were clear, loud, and without distortion. The bass registers but is nothing to write home about. The woofer does pick-up beautiful midranges clearly and with an audiophile level not expected for the price. It is a dual cone, so the tweeter is is a whizzer that really can't pick up the high range treble and is mediocre, but passable. The next test was at 50W - likely overdriven somewhat (~55W). Sound output was very good; loud, mostly clear and unexpectedly crisp on midrange (with limited bass) - it played a house mix with boom. Again, the treble suffered; it started to distort on treble laden rock songs (despite the amp actively filtering the signal). Despite this distortion, the speakers are surprisingly good, better than expected, and at that price... need I say more?

## 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 |
| Additional Features | Radio |
| Age Range Description | Adult |
| Antenna Location | for surround sound systems |
| Audio Driver Type | Dynamic Driver |
| Audio Output Mode | Surround |
| Audio output mode | Surround |
| Battery Average Life | 5 Hours |
| Best Sellers Rank | #21,186 in Electronics ( See Top 100 in Electronics ) #35 in Coaxial Car Speakers |
| Brand | BOSS Audio Systems |
| Built-In Media | Brs Series Dual-cone Full-range Replacement Speaker (4") |
| Color | black |
| Compatible Devices | Desktop, Laptop, MP3 Player, Smartphone, Tablet |
| Compatible with Vehicle Type | Bus, Car, RV, Tractor, Truck, Van |
| Connectivity Protocol | Coaxial |
| Connectivity Technology | Coaxial |
| Connectivity technology | Coaxial |
| Control Method | Touch |
| Controller Type | Button Control or Touch Control |
| Customer Package Type | standard packaging |
| Customer Reviews | 4.4 out of 5 stars 1,035 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 centimeters |
| Item Weight | 0.87 Pounds |
| MP3 player | No |
| Manufacturer | BOSS AUDIO |
| Maximum Range | 25 Meters |
| Model Name | Brs40 |
| Model Number | BRS40 |
| Mounting Type | Flush Mount |
| Mounting type | Flush Mount |
| Number of Audio Channels | 5.1 |
| Number of Batteries | 1 12V batteries required. |
| Number of Items | 1 |
| Power Source | Corded Electric |
| Speaker Maximum Output Power | 50 Watts |
| 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 Diameter | 4 Inches |
| Tweeter Diameter | 4.01 Inches |
| UPC | 523161112950 999994548769 999994339039 617407313352 809186297385 328996141256 070071263581 072090792981 809385692271 100010956615 014445412151 791489110341 |
| Unit Count | 1 Count |
| Warranty Type | Full |
| Water Resistance Level | Not Water Resistant |
| Wireless Technology | No Wireless Communication Technology |
| Woofer Diameter | 4 Inches |

## Product Details

- **Brand:** BOSS Audio Systems
- **Speaker maximum output power:** 50 Watts
- **Frequency response:** 100 Hz
- **Connectivity technology:** Coaxial
- **Audio output mode:** Surround

## 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)

## 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

### ⭐⭐⭐⭐⭐ 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(^_^;)）

### ⭐⭐⭐⭐⭐ Good boom for the price
*by K***N on 3 October 2016*

For the price, which is simply incredible, these are 5-star speakers. I picked up 2 for a home stereo project (bookshelf mini-speakers). They arrived incredibly fast and were clam-shelled for extra protection. See picture below for contents. Speaker is 4" square. The leads are marked, but it is really faint; I used a flashlight to read the polarities. Speakers were tested on a Pioneer amp. At 25 watts (4 Ohm impedance) they were clear, loud, and without distortion. The bass registers but is nothing to write home about. The woofer does pick-up beautiful midranges clearly and with an audiophile level not expected for the price. It is a dual cone, so the tweeter is is a whizzer that really can't pick up the high range treble and is mediocre, but passable. The next test was at 50W - likely overdriven somewhat (~55W). Sound output was very good; loud, mostly clear and unexpectedly crisp on midrange (with limited bass) - it played a house mix with boom. Again, the treble suffered; it started to distort on treble laden rock songs (despite the amp actively filtering the signal). Despite this distortion, the speakers are surprisingly good, better than expected, and at that price... need I say more?

### ⭐⭐⭐⭐⭐ Ótima qualidade
*by J***R on 28 May 2026*

Muito bom, veio bem embalado e sem avarias. Já instalei, ele vem com uma moldura para auxiliar a instalação.

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**Shop now:** [https://www.desertcart.pt/products/259531265-brs40-50-watt-4-inch-full-range-replacement-car-speaker](https://www.desertcart.pt/products/259531265-brs40-50-watt-4-inch-full-range-replacement-car-speaker)

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*Product available on Desertcart Portugal*
*Store origin: PT*
*Last updated: 2026-07-12*