---
product_id: 255777518
title: "POLK AUDIO DB402 DB+ Series 4\" Coaxial Speakers with Marine Certification, Black"
brand: "polk audio"
price: "$29.73"
currency: USD
in_stock: false
category: "Polk Audio"
url: https://www.desertcart.us/products/255777518-polk-audio-db402-db-series-4-coaxial-speakers-with-marine
store_origin: US
region: United States of America
---

# IP55 marine-grade waterproof 135W max output power Simple drop-in installation POLK AUDIO DB402 DB+ Series 4" Coaxial Speakers with Marine Certification, Black

**Brand:** polk audio
**Price:** $29.73
**Availability:** ❌ Out of Stock

## Summary

> 💥 Upgrade your soundscape—wherever the road or waves take you!

## Quick Answers

- **What is this?** POLK AUDIO DB402 DB+ Series 4" Coaxial Speakers with Marine Certification, Black by polk audio
- **How much does it cost?** $29.73 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/255777518-polk-audio-db402-db-series-4-coaxial-speakers-with-marine)

## Best For

- polk audio enthusiasts

## Why This Product

- Trusted polk audio brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Powerful 135W Output:** Experience booming, crystal-clear sound that outperforms factory speakers.
- • **UV & Waterproof Cone:** Polypropylene cone with waterproof surrounds keeps your sound pristine, rain or shine.
- • **Versatile Drop-In Fit:** Effortless installation in cars, boats, ATVs, and more—upgrade your ride in minutes.
- • **Stereo Dynamic Drivers:** Rich, balanced audio with 4” coaxial drivers and 0.75” tweeters for immersive listening.
- • **Marine-Grade Durability:** IP55 rating ensures resistance to water, dirt, salt-fog, UV, and humidity—built for any adventure.

## Overview

The Polk Audio DB402 DB+ Series 4" Coaxial Speakers deliver 135 watts of high-performance stereo sound with marine-certified IP55 waterproofing. Featuring UV-resistant polypropylene cones and simple drop-in installation, these speakers are engineered for cars, boats, and ATVs, ensuring durable, crystal-clear audio in any environment.

## Description

Polk Audio Speaker | DB402 DB+ Series 4” Coaxial Speakers with Marine Certification | Simple drop-in installation for any vehicle including cars, boats, ATVs

## Features

- High performance audio upgrade that delivers signature quality sound that goes beyond OEM factory systems
- Marine certified with IP55 rating (water- and dirt-resistant) and tested for salt-fog, UV and humidity
- Polypropylene and UV tolerant cone with waterproof inner and outer surrounds
- Simple drop-in installation for any vehicle including cars, boats, ATVs—you name it
- Cut out Diameter - 4.09" Bottom Mount - 2" Top Mount - 1.79"

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B01EYCTVUE |
| Additional Features | Waterproof |
| Age Range Description | Adult |
| Antenna Location | For Smartphones, Personal Computers, Laptops, Cars, Boats, Motorcycles, and ATVs |
| Audio Driver Type | Dynamic Driver |
| Audio Output Mode | Stereo |
| Best Sellers Rank | #104,560 in Electronics ( See Top 100 in Electronics ) #378 in Coaxial Car Speakers |
| Brand | Polk Audio |
| Built-In Media | Polk Audio Speaker | DB402 DB+ Series 4” Coaxial Speakers with Marine Certification |
| Color | Black |
| Compatible Devices | Home Theater, Television |
| Compatible with Vehicle Type | Car, Boat, Motorcycle, ATV |
| Connectivity Protocol | Coaxial |
| Connectivity Technology | Coaxial |
| Control Method | Touch |
| Controller Type | Touchpad |
| Customer Package Type | Frustration-Free Packaging |
| Customer Reviews | 4.5 4.5 out of 5 stars (495) |
| Enclosure Material | Pe |
| Frequency Response | 22 KHz |
| Global Trade Identification Number | 00747192127244 |
| Is Waterproof | True |
| Item Dimensions D x W x H | 30.2D x 30W x 30.5H centimeters |
| Item Weight | 2.5 Pounds |
| MP3 player | No |
| Manufacturer | Polk Audio |
| Model Name | Marine Certified |
| Model Number | AA9402 |
| Mounting Type | drop in |
| Number Of Circuits | 2 |
| Number of Audio Channels | 2.0 |
| Number of Items | 1 |
| Number of Power Levels | 1 |
| Power Source | Corded Electric |
| Series Number | 94 |
| Speaker Maximum Output Power | 135 Watts |
| Speaker Size | 4 Inches |
| Speaker Type | Waterproof |
| Specific Uses For Product | Land and marine vehicles |
| Subwoofer Connectivity Technology | Wired |
| Subwoofer Diameter | 4 Inches |
| Total Ethernet Ports | 2 |
| Tweeter Diameter | 0.75 Inches |
| UPC | 747192127244 |
| Unit Count | 1 Count |
| Warranty Type | Limited |
| Water Resistance Level | Waterproof |
| Wireless Technology | No Wireless Communication Technology |
| Woofer Diameter | 4 Inches |

## Product Details

- **Audio output mode:** Stereo
- **Brand:** Polk Audio
- **Connectivity technology:** Coaxial
- **Frequency response:** 22 KHz
- **Speaker maximum output power:** 135 Watts

## Images

![POLK AUDIO DB402 DB+ Series 4" Coaxial Speakers with Marine Certification, Black - Image 1](https://m.media-amazon.com/images/I/61l5dWMHc3L.jpg)

## Available Options

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

## Questions & Answers

**Q: will these fit a 2014 dodge ram front dash?**
A: Check your owners manual to see what size speakers are installed originally but they fix my MR2 dash!  Good luck

**Q: what is the outer dimension of the grill?**
A: Check your owners manual or Cruchfield site for fitment

**Q: Will these work for the rear of my 2015 Honda GoldWing?**
A: Use the db522 you might have to modify a little bit but they'll fit in

**Q: What size hole the a drill and how many W will each speaker handle**
A: Thanks for your question. Cutout: 4.09 inches. Rated 45 watts continuous power, 135 watts peak.
World Wide Stereo is 40 years old and a proud authorized Polk Audio dealer.

## Frequently Bought Together

- POLK AUDIO DB402 DB+ Series 4" Coaxial Speakers with Marine Certification, Black
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- Polk Audio DB652 DB+ Series 6.5" Coaxial Speaker for Car & Marine, 2-Way Boat & Car Audio Speaker, 40-22kHz Frequency Response, Polypropylene Woofer Cone & 3/4" Silk Dome Tweeter, Black

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-09-05*