---
product_id: 259531265
title: "Brs40 50 Watt, 4 Inch, Full Range, Replacement Car Speaker - Sold Individually"
brand: "boss audio systems"
price: "€ 42.94"
currency: EUR
in_stock: true
url: https://www.desertcart.fi/products/259531265-brs40-50-watt-4-inch-full-range-replacement-car-speaker
store_origin: FI
region: Finland
---

# 82 dB Sensitivity 100Hz-18kHz Range 50W Power Brs40 50 Watt, 4 Inch, Full Range, Replacement Car Speaker - Sold Individually

**Brand:** boss audio systems
**Price:** € 42.94
**Availability:** ✅ In Stock

## Summary

> 🎉 Elevate Your Drive with Boss Audio!

## 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?** € 42.94 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.fi](https://www.desertcart.fi/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

- • **Durable Design:** Built with a polypropylene cone and aluminum voice coil for longevity.
- • **Unleash Your Sound:** Transform your ride with powerful 50 watts of audio bliss.
- • **Compact & Lightweight:** Perfectly sized at 4.1” x 4.1” x 1.8” and only 1 lb per pair.
- • **Peace of Mind Warranty:** Enjoy a 3-year Platinum Online Dealer Warranty for worry-free listening.
- • **Crystal Clear Frequencies:** Experience a wide frequency response from 100 Hz to 18 kHz.

## Overview

The Boss Audio Systems BRS40 is a high-performance 50-watt replacement car speaker designed for audiophiles on the go. With a frequency response of 100 Hz to 18 kHz and a sensitivity of 82 dB, this speaker delivers clear and powerful sound. Its durable polypropylene cone and aluminum voice coil ensure longevity, while its compact dimensions make it a perfect fit for any vehicle. Plus, enjoy peace of mind with a 3-year Platinum Online Dealer Warranty.

## Description

Boss Audio Systems Brs40 50 Watt, 4 Inch, Full Range, Replacement Car Speaker - Sold Individually

## 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 |
| 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

- **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.

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

---

*Product available on Desertcart Finland*
*Store origin: FI*
*Last updated: 2026-02-28*