---
product_id: 295463010
title: "BOSS AUDIO MRWT40 Marine 4\" 2-way 400-watt Waketower Speaker"
brand: "boss audio systems"
price: "¥85307"
currency: JPY
in_stock: true
reviews_count: 5
category: "Boss Audio Systems"
url: https://www.desertcart.jp/products/295463010-boss-audio-mrwt40-marine-4-2-way-400-watt-waketower
store_origin: JP
region: Japan
---

# 100% weatherproof design Bluetooth & aux compatible 400W peak power BOSS AUDIO MRWT40 Marine 4" 2-way 400-watt Waketower Speaker

**Brand:** boss audio systems
**Price:** ¥85307
**Availability:** ✅ In Stock

## Summary

> 🌊🔊 Ride the waves with sound that commands attention!

## Quick Answers

- **What is this?** BOSS AUDIO MRWT40 Marine 4" 2-way 400-watt Waketower Speaker by boss audio systems
- **How much does it cost?** ¥85307 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/295463010-boss-audio-mrwt40-marine-4-2-way-400-watt-waketower)

## 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 400-Watt Output:** Feel every beat with crystal-clear sound that dominates the waves.
- • **Marine-Grade Weatherproofing:** Built to brave sun, salt, and spray—your ultimate boatside audio companion.
- • **Wake Tower Ready & Easy Mount:** Engineered for quick installation on your wake tower—turn heads on and off the water.
- • **Compact 4" 2-Way Speaker Design:** Sleek, space-saving form that delivers rich highs and deep mids for immersive sound.
- • **Seamless Bluetooth & Aux Connectivity:** Effortlessly stream from your smartphone or tablet, no wires, no hassle.

## Overview

The BOSS AUDIO MRWT40 is a 4-inch, 2-way marine speaker delivering up to 400 watts of dynamic audio power. Designed specifically for wake towers and marine environments, it features a weatherproof build to withstand harsh conditions. Compatible with Bluetooth and auxiliary inputs, it offers versatile connectivity for smartphones and tablets, making it the perfect sound upgrade for your boat.

## Description

BOSS AUDIO MRWT40 Marine 4" 2-way 400-watt Waketower Speaker : desertcart.in: Electronics

Review: Good quality for the price. Very loud and sound amazing
Review: haut parleur pour mon side by side de bonne qualité mais manque de puissance a mon gout. distortionne plutot vite. mais pour le prix peut dire que cest un bon achat. sont très élégants. à volume plus bas sonne tres bien, mais si ont monte le volume moins drement, sa distortionne et ont a l’impression d’entendre juste les aigues.

## Features

- Wake tower Speaker
- 2 way Speaker
- Power: 400-watt

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00VV6YQAW |
| Audio Driver Type | Dynamic Driver |
| Audio Wattage | 400 Watts |
| Audio input compatible with the item | Auxiliary |
| Batteries Included | No |
| Batteries Required | No |
| Best Sellers Rank | #1,253,907 in Electronics ( See Top 100 in Electronics ) #4 in Marine Speakers |
| Colour | black |
| Compatible Devices | Smartphone, Tablet |
| Control Method | Voice |
| Customer Reviews | 4.4 4.4 out of 5 stars (1,556) |
| Date First Available | 20 April 2015 |
| Does it contain liquid? | No |
| Global Trade Identification Number | 00791489123051 |
| Includes Rechargeable Battery | No |
| Includes remote | No |
| Is Waterproof | TRUE |
| Item Dimensions LxWxH | 18 x 13.7 x 18 Centimeters |
| Item Weight | 2 kg 720 g |
| Item model number | MRWT40 |
| Model | MRWT40 |
| Model Name | MRWT40 |
| Model Year | 2015 |
| Power Source | Battery Powered |
| Product Dimensions | 18.03 x 13.72 x 18.03 cm; 2.72 kg |
| Recommended Uses For Product | For Boats or Marine Environments |
| Set Name | Single |
| Shape | rectangular prism |
| Speaker Diameter | 4 Inches |
| Speaker Size | 4 Inches |
| Speaker Type | Bookshelf |
| Special Feature | Weatherproof |
| Special Features | Weatherproof |
| Specific Uses For Product | Marine, Boat, Wake Tower |
| Style | Simple/Understated |
| Subwoofer Diameter | 4 Inches |
| Surround Sound Channel Configuration | 2 1 |
| Tweeter Diameter | 1 Inches |
| UPC | 823019864186 791489123051 |
| Voltage | 12 Volts |
| Wattage | 200 Watts |
| Wireless Communication Technology | Bluetooth |

## Product Details

- **Audio Output Mode:** Surround
- **Brand:** BOSS Audio Systems
- **Connectivity Technology:** Bluetooth
- **Mounting Type:** Handlebar Mount
- **Speaker Maximum Output Power:** 200 Watts

## Images

![BOSS AUDIO MRWT40 Marine 4" 2-way 400-watt Waketower Speaker - Image 1](https://m.media-amazon.com/images/I/61nNoqHVdAL.jpg)

## Questions & Answers

**Q: What size bars do these speakers fit?**
A: The MRWT40 can fit bars that have a diameter between 1.5" and 2". It comes with rubber strips to accommodate smaller bars as well.

**Q: How do I connect the speakers?**
A: The MRWT40 connects to your standard speaker wires. On the back of the unit you will find push terminals, once pushed down, it will open a hole for speaker wire to be inserted. When you release the terminal, it will pinch and grab the wire.

**Q: I want to install these on my UTV, what amplifier should I get?**
A: We suggest our marine amplifier, Amazon ASIN B00IBI518Y (BOSS Audio Systems MC900B)

**Q: Are these Bluetooth speakers?**
A: As these speakers connect to your existing stereo, it will depend if your stereo has Bluetooth or not. If you need a new stereo, check out our Amazon store for Bluetooth marine stereo options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by D***L on 18 November 2025*

Good quality for the price. Very loud and sound amazing

### ⭐⭐⭐⭐⭐ Review
*by M***E on 22 September 2019*

haut parleur pour mon side by side de bonne qualité mais manque de puissance a mon gout. distortionne plutot vite. mais pour le prix peut dire que cest un bon achat. sont très élégants. à volume plus bas sonne tres bien, mais si ont monte le volume moins drement, sa distortionne et ont a l’impression d’entendre juste les aigues.

### ⭐ Review
*by A***N on 25 May 2022*

I bought it last month and after installing it abd using it after two weeks three speakers broke and 1 is still working.

## Frequently Bought Together

- BOSS Audio Systems MRWT40 ATV UTV Marine Weatherproof Waketower System - 4 Inch Stereo Speakers, Full Range, 2 Way, Tweeters, IPX5 Rated, Sold in Pairs, Wake Tower For Boat
- BOSS Audio Systems MGR350B Marine Boat Stereo Gauge Receiver – Bluetooth Head Unit, No CD DVD Player, Built-in 4 Channel Amplifier, Weatherproof, USB, USB Charging
- BOSS Audio Systems MRANT10 Weatherproof Marine Dipole Hideaway Antenna,Black

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**Shop now:** [https://www.desertcart.jp/products/295463010-boss-audio-mrwt40-marine-4-2-way-400-watt-waketower](https://www.desertcart.jp/products/295463010-boss-audio-mrwt40-marine-4-2-way-400-watt-waketower)

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-02-16*