---
product_id: 2391526
title: "BRS40 4 Inch Replacement Car Door Speaker, 50 Watts"
brand: "boss audio systems"
price: "€ 56.77"
currency: EUR
in_stock: true
category: "Boss Audio Systems"
url: https://www.desertcart.com.cy/products/2391526-brs40-4-inch-replacement-car-door-speaker-50-watts
store_origin: CY
region: Cyprus
---

# 100Hz-18kHz frequency range 4-inch compact size 50W peak power BRS40 4 Inch Replacement Car Door Speaker, 50 Watts

**Brand:** boss audio systems
**Price:** € 56.77
**Availability:** ✅ In Stock

## Summary

> 🎶 Upgrade your ride’s soundtrack with BOSS-level power!

## Quick Answers

- **What is this?** BRS40 4 Inch Replacement Car Door Speaker, 50 Watts by boss audio systems
- **How much does it cost?** € 56.77 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.cy](https://www.desertcart.com.cy/products/2391526-brs40-4-inch-replacement-car-door-speaker-50-watts)

## 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

- • **Compact 4-Inch Design:** Seamlessly fits most car doors for an effortless upgrade.
- • **Wide Frequency Response:** From deep bass to sparkling highs, enjoy full-range audio clarity.
- • **3-Year Platinum Warranty:** Drive worry-free with industry-leading protection and support.
- • **Powerful 50 Watts Output:** Experience crisp, clear sound that fills your car with every beat.
- • **Durable Polypropylene Cone:** Engineered for long-lasting performance and rich sound quality.

## Overview

The BOSS Audio Systems BRS40 is a 4-inch coaxial car door speaker delivering 50 watts of peak power with a frequency response from 100 Hz to 18 kHz. Featuring a durable polypropylene cone and foam surround, it offers clear, dynamic sound in a compact design. Backed by a 3-year platinum warranty, it’s the perfect professional-grade replacement speaker for a superior in-car audio experience.

## Description

desertcart.com: BOSS Audio Systems BRS40 4 Inch Replacement Car Door Speaker, 50 Watts : Electronics

## 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 |
| Additional Features | Radio |
| Age Range Description | Adult |
| Antenna Location | car |
| Audio Driver Type | Dynamic Driver |
| Audio Output Mode | Stereo |
| Best Sellers Rank | #10,319 in Electronics ( See Top 100 in Electronics ) #43 in Car Coaxial Speakers |
| Brand | BOSS Audio Systems |
| Built-In Media | Speaker |
| Color | black |
| Compatible Devices | Desktop, Karaoke Machine, Laptop, MP3 Player, Smartphone, Tablet |
| Compatible with Vehicle Type | Bus, Car, RV, Tractor, Truck, Van |
| Connectivity Protocol | Coaxial |
| Connectivity Technology | Coaxial |
| Control Method | Touch |
| Customer Package Type | Standard Packaging |
| Customer Reviews | 4.4 4.4 out of 5 stars (1,096) |
| Enclosure Material | Polypropylene, Aluminum |
| Frequency Response | 18 KHz |
| Global Trade Identification Number | 00791489110341, 00999994548769 |
| Impedance | 4 ohm |
| Is Waterproof | False |
| Item Dimensions D x W x H | 4.06"D x 4.06"W x 1.8"H |
| Item Weight | 13.92 ounces |
| Manufacturer | BOSS Audio Systems |
| Maximum Range | 25 meters |
| Model Name | BRS40 |
| Model Number | BRS40 |
| Mounting Type | Flush Mount |
| Number of Audio Channels | 4.1 |
| 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 | Coaxial |
| 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 Description | 3 YEAR PLATINUM DEALER WARRANTY |
| 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
- **Frequency Response:** 18 KHz
- **Speaker Maximum Output Power:** 50 watts

## Images

![BRS40 4 Inch Replacement Car Door Speaker, 50 Watts - 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.com.cy/products/2391526-brs40-4-inch-replacement-car-door-speaker-50-watts](https://www.desertcart.com.cy/products/2391526-brs40-4-inch-replacement-car-door-speaker-50-watts)

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*Product available on Desertcart Cyprus*
*Store origin: CY*
*Last updated: 2026-07-31*