---
product_id: 1314543
title: "BOSS Audio Systems MR4.3B 200 Watt Per Pair, 4 Inch, Full Range, 3 Way Weatherproof Marine Speakers Sold in Pairs"
brand: "boss audio systems"
price: "HK$1362"
currency: HKD
in_stock: true
reviews_count: 13
category: "Boss Audio Systems"
url: https://www.desertcart.hk/products/1314543-boss-audio-systems-mr4-3b-200-watt-per-pair-4
store_origin: HK
region: Hong Kong
---

# 80Hz-18kHz full-range sound 200W peak power per pair 100% weatherproof design BOSS Audio Systems MR4.3B 200 Watt Per Pair, 4 Inch, Full Range, 3 Way Weatherproof Marine Speakers Sold in Pairs

**Brand:** boss audio systems
**Price:** HK$1362
**Availability:** ✅ In Stock

## Summary

> 🌊 Elevate your outdoor vibe with sound that sails above the rest!

## Quick Answers

- **What is this?** BOSS Audio Systems MR4.3B 200 Watt Per Pair, 4 Inch, Full Range, 3 Way Weatherproof Marine Speakers Sold in Pairs by boss audio systems
- **How much does it cost?** HK$1362 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hk](https://www.desertcart.hk/products/1314543-boss-audio-systems-mr4-3b-200-watt-per-pair-4)

## 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 Yet Impactful:** 4-inch speakers with a sleek footprint fit seamlessly on boats, patios, or outdoor setups.
- • **Powerful Marine Audio:** 200 watts per pair deliver crisp, room-filling sound even on the open water.
- • **Precision 3-Way Sound:** Dedicated tweeter, midrange, and woofer for rich highs, clear mids, and deep lows.
- • **Plug & Play Simplicity:** Easy installation with included swivel brackets—get your sound on without the hassle.
- • **Built to Brave the Elements:** Fully weatherproof with rubber surrounds and polypropylene cones for ultimate durability.

## Overview

The BOSS Audio Systems MR4.3B is a pair of 4-inch, 3-way marine speakers delivering 200 watts of weatherproof, full-range sound. Designed for marine and outdoor use, these speakers feature a polypropylene cone, rubber surround, and a 1-inch aluminum voice coil tweeter for durable, high-quality audio. Compact and easy to install with swivel brackets, they offer a frequency response from 80 Hz to 18 kHz and come backed by a 3-year warranty, making them a reliable choice for any outdoor sound setup.

## Description

The Boss Audio MR4.3B 4″ Box Speakers are weather‑resistant 3‑way enclosed speakers designed to deliver durable performance and full‑range sound in marine, outdoor, or indoor audio systems. These compact box speakers are ideal for boats, patio setups, or anywhere you want reliable, balanced sound from a small‑footprint speaker pair.

Review: good product - sound great and good value
Review: These things just work! Plug them in and go! - These look and sound great! Easy to hook up and use! No issues!

## Features

- Impedance: 4 Ohms, Frequency Response: 80 Hz - 18 kHz, Sensitivity: 85 dB
- Cone: Polypropylene, Voice Coil: 1 Inch Aluminum
- Surround: Rubber, Basket: Plastic
- One .75 Inch Dome Tweeter And 1.5 Inch Poly Cone Midrange Per Speaker
- Included: Swivel Brackets
- Dimensions: Depth 5.3” x Width 5.3” x Height 8.8”, Weight Per Pair: 7.4 Lbs.
- 3 Year Platinum Online Dealer Warranty

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00BTVSWWW |
| Audio Driver Type | Dynamic Driver |
| Batteries | 1 12V batteries required. |
| Best Sellers Rank | #36,963 in Electronics ( See Top 100 in Electronics ) #46 in Marine Speakers |
| Color | BLACK |
| Compatible Devices | Smartphone, Tablet, MP3 Player, Laptop |
| Control Method | App |
| Customer Package Type | Standard Packaging |
| Customer Reviews | 4.4 4.4 out of 5 stars (863) |
| Date First Available | November 17, 2009 |
| Department | Unisex-Adult |
| Global Trade Identification Number | 00791489120289 |
| Impedance | 4 Ohms |
| Included Components | Great Product |
| Is Discontinued By Manufacturer | No |
| Is Waterproof | TRUE |
| Item Weight | 5.9 pounds |
| Item model number | MR4.3B |
| Manufacturer | Boss Audio Systems, Inc. |
| Material | Plastic |
| Model Name | MR4.3B |
| Number Of Circuits | 3 |
| Number of Batteries | 1 12V batteries required. |
| Number of Items | 1 |
| Number of Power Levels | 1 |
| Other display features | Wireless |
| Product Dimensions | 5.3"D x 5.3"W x 8.8"H |
| Recommended Uses For Product | Music,Indoor,Outdoor |
| Speaker Size | 4 Inches |
| Speaker Type | Coaxial, Tweeter, Outdoor |
| Special Feature | Waterproof |
| Special features | Waterproof |
| Specific Uses For Product | personal |
| Style | 4" 3-Way Black Box Speaker |
| Subwoofer Connectivity Technology | Wired |
| Surround Sound Channel Configuration | 3.0 |
| Tweeter Diameter | 0.79 Inches |
| UPC | 807032937232 803982861962 804066818834 791489118996 791489120289 |
| Unit Count | 2.0 Count |
| Warranty Type | One-Year Warranty or Limited Warranty |
| Water Resistance Level | Waterproof |
| Woofer Diameter | 4 Inches |

## Product Details

- **Audio Output Mode:** Surround
- **Brand:** BOSS Audio Systems
- **Connectivity Technology:** Coaxial
- **Mounting Type:** Inside Mount,Outside Mount,Boat Mount
- **Speaker Maximum Output Power:** 200 Watts

## Images

![BOSS Audio Systems MR4.3B 200 Watt Per Pair, 4 Inch, Full Range, 3 Way Weatherproof Marine Speakers Sold in Pairs - Image 1](https://m.media-amazon.com/images/I/71byh9eMWtL.jpg)

## Available Options

This product comes in different **Style** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ good product
*by K***H on January 21, 2026*

sound great and good value

### ⭐⭐⭐⭐⭐ These things just work! Plug them in and go!
*by J***X on November 18, 2025*

These look and sound great! Easy to hook up and use! No issues!

### ⭐⭐⭐⭐ Sound better than expected
*by M***H on December 1, 2025*

For the price they sound just fine. wanted something cheap for a farm truck and these did the trick

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**Shop now:** [https://www.desertcart.hk/products/1314543-boss-audio-systems-mr4-3b-200-watt-per-pair-4](https://www.desertcart.hk/products/1314543-boss-audio-systems-mr4-3b-200-watt-per-pair-4)

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*Product available on Desertcart Hong Kong*
*Store origin: HK*
*Last updated: 2026-03-02*