---
product_id: 255777518
title: "DB402 DB+ Series 4\" Coaxial Speakers with Marine Certification, Black"
brand: "polk audio"
price: "€ 219.01"
currency: EUR
in_stock: true
reviews_count: 6
category: "Polk Audio"
url: https://www.desertcart.gr/products/255777518-db402-db-series-4-coaxial-speakers-with-marine-certification-black
store_origin: GR
region: Greece
---

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

**Brand:** polk audio
**Price:** € 219.01
**Availability:** ✅ In Stock

## Summary

> 💥 Make waves with sound that’s as tough as your lifestyle!

## Quick Answers

- **What is this?** DB402 DB+ Series 4" Coaxial Speakers with Marine Certification, Black by polk audio
- **How much does it cost?** € 219.01 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.gr](https://www.desertcart.gr/products/255777518-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

- • **All-Weather Ready:** Polypropylene cones with waterproof surrounds ensure your music never stops, rain or shine.
- • **Compact Powerhouse:** 4-inch coaxial design delivers immersive surround sound without sacrificing space.
- • **Universal Drop-In Fit:** Seamlessly upgrade cars, boats, ATVs, and more with hassle-free installation.
- • **Marine-Grade Durability:** IP55 certified to resist water, salt-fog, UV rays, and humidity—built for any adventure.
- • **Signature Polk Sound Quality:** Elevate your ride with crisp, dynamic audio that outperforms factory speakers.

## Overview

The Polk Audio DB402 DB+ Series 4" Coaxial Speakers deliver 135 watts of high-performance audio with marine-certified IP55 protection, ensuring resistance to water, dirt, salt-fog, UV, and humidity. Designed for easy drop-in installation across vehicles including cars, boats, and ATVs, these speakers feature durable polypropylene cones and waterproof surrounds for reliable all-weather sound. Perfect for professionals who demand premium sound quality and rugged durability on the go.

## 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: It seems the item is defective. - The tweeter on one of the speakers isn’t working properly; the high frequencies seem to be cut off.
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.

## 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 | Surround |
| Best Sellers Rank | #84,253 in Electronics ( See Top 100 in Electronics ) #304 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 | Laptop, Personal Computer, Smartphone |
| 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 (473) |
| 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 | 1.13 kg |
| 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 |
| Water Resistance Level | Waterproof |
| Wireless Technology | No Wireless Communication Technology |
| Woofer Diameter | 4 Inches |

## Product Details

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

## 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

### ⭐ It seems the item is defective.
*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.

### ⭐ 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

## 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

---

## Why Shop on Desertcart?

- 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016
- 🌍 **Shop Globally** — Access 737+ million products across 21 categories
- 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price
- 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members)
- 🔒 **Secure Payments** — Trusted payment options with buyer protection
- ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews

**Shop now:** [https://www.desertcart.gr/products/255777518-db402-db-series-4-coaxial-speakers-with-marine-certification-black](https://www.desertcart.gr/products/255777518-db402-db-series-4-coaxial-speakers-with-marine-certification-black)

---

*Product available on Desertcart Greece*
*Store origin: GR*
*Last updated: 2026-04-25*