---
product_id: 52689364
title: "DB402 DB+ Series 4\" Coaxial Speakers with Marine Certification, Black"
brand: "polk audio"
price: "$586.41"
currency: USD
in_stock: true
reviews_count: 5
category: "Polk Audio"
url: https://www.desertcart.us/products/52689364-db402-db-series-4-coaxial-speakers-with-marine-certification-black
store_origin: US
region: United States of America
---

# IP55 marine-certified water & dirt resistance 4" coaxial speaker for rich sound Simple drop-in installation for any vehicle DB402 DB+ Series 4" Coaxial Speakers with Marine Certification, Black

**Brand:** polk audio
**Price:** $586.41
**Availability:** ✅ In Stock

## Summary

> 🎶 Ride the wave of premium sound, rain or shine!

## Quick Answers

- **What is this?** DB402 DB+ Series 4" Coaxial Speakers with Marine Certification, Black by polk audio
- **How much does it cost?** $586.41 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/52689364-db402-db-series-4-coaxial-speakers-with-marine-certification-black)

## 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

- • **UV & Waterproof Cone:** Polypropylene cone with waterproof surrounds ensures lasting performance and clarity.
- • **Effortless Installation:** Drop-in design means no hassle—upgrade your sound system in minutes.
- • **Marine-Grade Durability:** IP55 rating plus salt-fog, UV, and humidity tested—built to brave the elements.
- • **Signature Polk Sound Upgrade:** Elevate your ride with crisp, balanced audio that outperforms factory speakers.
- • **Versatile Vehicle Compatibility:** Seamlessly fits cars, boats, ATVs—your all-terrain audio solution.

## Overview

The Polk Audio DB402 DB+ Series 4" Coaxial Speakers deliver high-performance, marine-certified audio with an IP55 rating for water and dirt resistance. Featuring a UV-tolerant polypropylene cone and waterproof surrounds, these speakers are engineered for durability in cars, boats, and ATVs. Their simple drop-in installation makes upgrading your sound system effortless, providing crisp, balanced sound that surpasses OEM factory speakers.

## Description

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

Review: These speaker flap and fart even at low volumes. Tried mounting them in unsorted and ported enclosures. My original no name brand speakers are better. Was trying to get something much nicer than factory speakers. Supplier is comunicating with me to resolve my issues ATM.
Review: I thought they were great sound for the money , good mid-range and bass was good

## 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 |
| Best Sellers Rank | 158,604 in Electronics & Photo ( See Top 100 in Electronics & Photo ) 435 in Coaxial Car Speakers |
| Colour | Black |
| Compatible devices | car |
| Control method | Touch |
| Department | Coaxial Speakers |
| Guaranteed software updates until | unknown |
| Included components | Polk Audio Speaker | DB402 DB+ Series 4” Coaxial Speakers with Marine Certification |
| Is waterproof | True |
| Item model number | AA9402 |
| Item weight | 2.5 Pounds |
| Manufacturer | Polk Audio |
| Number of items | 2 |
| Power source | Corded Electric |
| Product dimensions | 30.2D x 30W x 30.5H centimetres |
| Recommended uses for product | For Marine Vehicles, For Vehicles |
| Speaker size | 4 Inches |
| Subwoofer diameter | 4 Inches |
| Surround-sound channel configuration | 2.0 |
| Unit count | 1.0 count |
| Warranty type | Limited |
| Wireless communication technology | No Wireless Communication Technology |

## Product Details

- **Audio output mode:** Surround
- **Brand:** Polk Audio
- **Connectivity technology:** Coaxial
- **Frequency response:** 22 KHz
- **Material:** Polypropylene
- **Model name:** Marine Certified
- **Mounting type:** drop in
- **Speaker maximum output power:** 135 Watts
- **Speaker type:** Waterproof
- **Special feature:** Waterproof

## Images

![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.

## Customer Reviews

### ⭐ Review
*by M***N on 29 July 2023*

These speaker flap and fart even at low volumes. Tried mounting them in unsorted and ported enclosures. My original no name brand speakers are better. Was trying to get something much nicer than factory speakers. Supplier is comunicating with me to resolve my issues ATM.

### ⭐⭐⭐⭐⭐ Review
*by D***S on 20 August 2024*

I thought they were great sound for the money , good mid-range and bass was good

### ⭐ Review
*by A***A on 14 December 2024*

The tweeter on one of the speakers isn’t working properly; the high frequencies seem to be cut off.

## Frequently Bought Together

- POLK AUDIO DB402 DB+ Series 4" Coaxial Speakers with Marine Certification, Black
- APIELE 16mm Latching Push Button Switch 12V DC On Off Black Shell with LED Angel Eye Head for 0.63" Mounting Hole with Wire Socket Plug Self-Locking (Blue/Black Shell)
- 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: 2026-03-10*