---
product_id: 259531265
title: "Brs40 50 Watt, 4 Inch, Full Range, Replacement Car Speaker - Sold Individually"
brand: "boss audio systems"
price: "€ 62.83"
currency: EUR
in_stock: true
reviews_count: 5
category: "Boss Audio Systems"
url: https://www.desertcart.be/products/259531265-brs40-50-watt-4-inch-full-range-replacement-car-speaker
store_origin: BE
region: Belgium
---

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

**Brand:** boss audio systems
**Price:** € 62.83
**Availability:** ✅ In Stock

## Summary

> 🎵 Upgrade your ride’s soundtrack — sound like a BOSS, everywhere you go!

## 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?** € 62.83 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.be](https://www.desertcart.be/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 50-Watt Output:** Unleash rich, room-filling sound that commands attention on every drive.
- • **Wide Frequency Response:** Experience deep bass and sparkling highs from 100Hz to 18kHz for a full-range audio experience.
- • **3-Year Platinum Warranty:** Drive with confidence backed by a trusted warranty that protects your investment.
- • **Precision 4-Ohm Impedance:** Optimized for seamless integration with most car audio systems, delivering crystal-clear audio.
- • **Durable Polypropylene Cone & Aluminum Voice Coil:** Engineered for longevity and consistent performance, even on the bumpiest rides.

## Overview

The Boss Audio Systems BRS40 is a 4-inch, 50-watt full-range replacement car speaker featuring a 4-ohm impedance and a frequency response spanning 100Hz to 18kHz. Built with a durable polypropylene cone and aluminum voice coil, it delivers powerful, clear sound with enhanced bass and treble. Designed for easy flush mounting, it comes with a 3-year platinum warranty, making it a reliable upgrade for any vehicle’s audio system.

## 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: Delivering Powerful and Clean Sound Like a BOSS! - I purchased two BOSS BRS40 4", 4-ohm, 50-watt speakers for a cigar box speaker-amplifier project. I paired these speakers with a class-d amplifier capable of 30-watts peak/15-watts x 2 RMS. To ensure I had some punch in the bass of these full range speakers, I made a small port in my cigar box speaker-amp. I was surprised in the ample bass response coming from these speakers nestled in a 3.75 in. deep cigar box. The speakers arrived on time and in good condition. I would definitely recommend these speakers to family, friends, coworkers, and acquaintances. I think the price was good and the speaker performance is even better. I am going to purchase these again for similar size cigar box projects. Matter of fact I have two very nice Drew Estates Tabak Especial (Coffee Infused) cigar boxes sitting in my office that will be well suited for this speaker. Unfortunately, I have six other cigar box amps in line before them.

## 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 | #40,876 in Electronics ( See Top 100 in Electronics ) #99 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 |
| Country of Origin | China |
| Customer Package Type | standard packaging |
| Customer Reviews | 4.4 out of 5 stars 1,040 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 | 395 g |
| 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(^_^;)）

### ⭐⭐⭐⭐⭐ Delivering Powerful and Clean Sound Like a BOSS!
*by L***. on 30 August 2016*

I purchased two BOSS BRS40 4", 4-ohm, 50-watt speakers for a cigar box speaker-amplifier project. I paired these speakers with a class-d amplifier capable of 30-watts peak/15-watts x 2 RMS. To ensure I had some punch in the bass of these full range speakers, I made a small port in my cigar box speaker-amp. I was surprised in the ample bass response coming from these speakers nestled in a 3.75 in. deep cigar box. The speakers arrived on time and in good condition. I would definitely recommend these speakers to family, friends, coworkers, and acquaintances. I think the price was good and the speaker performance is even better. I am going to purchase these again for similar size cigar box projects. Matter of fact I have two very nice Drew Estates Tabak Especial (Coffee Infused) cigar boxes sitting in my office that will be well suited for this speaker. Unfortunately, I have six other cigar box amps in line before them.

### ⭐⭐⭐⭐⭐ Good cheap speaker
*by R***N on 29 June 2026*

Very good base for a cheap speaker very much recommend as good as a good set of speakers

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*Product available on Desertcart Belgium*
*Store origin: BE*
*Last updated: 2026-08-12*