---
product_id: 29143034
title: "Polk Audio DB402 DB+ Series 4 Inch Speakers Car Audio with Marine Certification, Car Coaxial Speakers, Black"
brand: "polk audio"
price: "€ 121.91"
currency: EUR
in_stock: true
reviews_count: 8
category: "Polk Audio"
url: https://www.desertcart.it/products/29143034-polk-audio-db402-db-series-4-inch-speakers-car-audio
store_origin: IT
region: Italy
---

# IP56 marine waterproof certified 22kHz frequency range 135W peak power Polk Audio DB402 DB+ Series 4 Inch Speakers Car Audio with Marine Certification, Car Coaxial Speakers, Black

**Brand:** polk audio
**Price:** € 121.91
**Availability:** ✅ In Stock

## Summary

> 🎵 Elevate your ride’s soundtrack—where power meets marine-grade resilience!

## Quick Answers

- **What is this?** Polk Audio DB402 DB+ Series 4 Inch Speakers Car Audio with Marine Certification, Car Coaxial Speakers, Black by polk audio
- **How much does it cost?** € 121.91 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.it](https://www.desertcart.it/products/29143034-polk-audio-db402-db-series-4-inch-speakers-car-audio)

## 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

- • **Marine-Grade Durability:** IP56 certification ensures splash-proof, UV, salt-fog, and humidity resistance—perfect for boats, motorcycles, and outdoor adventures.
- • **Versatile Compatibility:** Designed for cars, boats, motorcycles, and ATVs with 4/2-hole mounting options—upgrade your ride’s audio without compromise.
- • **Powerful & Precise Audio:** Experience crisp highs and deep lows with 135W peak power and a built-in crossover for flawless sound separation.
- • **Dynamic Balance Technology:** Laser-imaged materials reduce resonance for distortion-free, wide-dispersion sound that fills your space.
- • **Effortless Installation & Style:** Includes mounting hardware and sleek black grilles that upgrade your vehicle’s interior with a modern, bold look.

## Overview

The Polk Audio DB402 DB+ Series 4-inch coaxial speakers deliver 135W peak power with a 4-ohm impedance and a 22kHz frequency range, engineered for both car and marine environments. Featuring Dynamic Balance technology for distortion-free sound, these IP56-certified speakers resist water, UV, salt-fog, and humidity. Easy to install with included hardware and stylish grilles, they offer versatile mounting options for vehicles and boats, making them the perfect upgrade for audiophiles who demand durability and premium sound on the go.

## Description

The Polk Audio DB402 4" 2-Way model for marine and vehicle use, feature a polypropylene woofer cone and a 3/4" silk dome tweeter with a built-in crossover; delivering smooth, precise sound. Dynamic Balance technology uses laser imaging to reduce resonance, producing a wide response with low distortion. The DB+ Series marine speakers are versatile, offering 4/2-hole compatibility and mounting hardware. The bold grille design adds style to any dashboard, appealing to drivers planning road trips and to the car audio enthusiast. The car and marine coaxial speakers, certified by Polk Audio, undergo rigorous tests for sun, moisture, and extreme temperature shifts; so they perform reliably on your vessel without altering performance. Polk Audio's DB+ Series subwoofers complement the set, delivering smooth, powerful bass, letting you upgrade your car stereo without breaking the bank while enjoying best-in-class sound across vehicles and watercraft alike.

Review: great little speakers - these work great in an old toyota pickup and the price was right
Review: The speakers were as described and sound good. Fit perfectly for my goldwing. - I bought these speakers to install on my goldwing. They sound good and fit into my old speaker housings perfectly. For the money I am happy with the item.

## Features

- EXCEPTIONAL SPEAKER FOR CAR & MARINE - The Polk DB402 2-Way Coaxial Marine Certified car speakers with 135W peak power, 4-ohm impedance, 4" polypropylene woofer cone, and a strong rubber surround are built to reproduce high-quality music
- ELEVATE YOUR CAR AUDIO SYSTEM - With a built-in crossover, the music speaker directs highs & lows to the respective drivers; it handles up to 45W RMS & boasts 60-22kHz range to reproduce high-quality sound
- RESONANCE-FREE SOUND CREATION - With Dynamic Balance proprietary technology, these marine/boat speakers use laser imaging to identify the best mix of materials and ensures a distortion-free response with wide dispersion
- SPLASH-PROOF SOUND - Polk DB+ series speakers give thunderous sonic output in freshwater boats, motorcycles, and more; they have IP56 marine certification with coated steel baskets. They are even tested for Salt-fog, UV, and Humidity
- EASY TO INSTALL - Polk door speakers include mounting hardware and stylish grilles that enable easy installation and add flair to any vehicle interior; an ideal choice for custom installations

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B01EYCTVUE |
| Additional Features | Waterproof |
| Antenna Location | For Marine Vehicles, For Vehicles |
| Audio Driver Type | Dynamic Driver |
| Audio Output Mode | Surround |
| Best Sellers Rank | #22,479 in Electronics ( See Top 100 in Electronics ) #104 in Car Coaxial Speakers |
| Brand | Polk Audio |
| Built-In Media | Literature, Speaker |
| Color | Black |
| Compatible Devices | car |
| 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 | 4.6 out of 5 stars 478 Reviews |
| Enclosure Material | Steel, Polypropylene |
| Frequency Response | 22 KHz |
| Global Trade Identification Number | 00747192127244 |
| Is Waterproof | True |
| Item Dimensions D x W x H | 11.9"D x 11.8"W x 12"H |
| Item Height | 12 inches |
| Item Weight | 2.5 Pounds |
| MP3 player | No |
| Manufacturer | Polk Audio |
| Model Name | DB402 |
| Model Number | AA9402 |
| Mounting Type | Boat Mount,Coaxial,Top Mount |
| Number Of Circuits | 2 |
| Number of Audio Channels | 2.0 |
| Number of Items | 2 |
| Number of Power Levels | 1 |
| Power Source | Corded Electric |
| Series Number | 94 |
| Speaker Maximum Output Power | 135 Watts |
| Speaker Size | 4 Inches |
| Speaker Type | Coaxial |
| Specific Uses For Product | Outdoor/Portable Audio Setups, Marine Applications |
| Subwoofer Connectivity Technology | Wired |
| Subwoofer Diameter | 4 Inches |
| Total Ethernet Ports | 2 |
| Tweeter Diameter | 0.75 Inches |
| UPC | 747192127244 |
| Unit Count | 1.0 Count |
| Warranty Description | 1 Year |
| Warranty Type | Limited |
| Wireless Technology | No Wireless Communication Technology |
| Woofer Diameter | 4 Inches |

## Product Details

- **Brand:** Polk Audio
- **Speaker Maximum Output Power:** 135 Watts
- **Frequency Response:** 22 KHz
- **Connectivity Technology:** Coaxial
- **Audio Output Mode:** Surround

## Images

![Polk Audio DB402 DB+ Series 4 Inch Speakers Car Audio with Marine Certification, Car Coaxial Speakers, Black - Image 1](https://m.media-amazon.com/images/I/61l5dWMHc3L.jpg)
![Polk Audio DB402 DB+ Series 4 Inch Speakers Car Audio with Marine Certification, Car Coaxial Speakers, Black - Image 2](https://m.media-amazon.com/images/I/71UwP4OSEcL.jpg)
![Polk Audio DB402 DB+ Series 4 Inch Speakers Car Audio with Marine Certification, Car Coaxial Speakers, Black - Image 3](https://m.media-amazon.com/images/I/71gBygSxtvL.jpg)

## 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

### ⭐⭐⭐⭐⭐ great little speakers
*by W***M on December 4, 2025*

these work great in an old toyota pickup and the price was right

### ⭐⭐⭐⭐⭐ The speakers were as described and sound good. Fit perfectly for my goldwing.
*by T***Y on October 16, 2025*

I bought these speakers to install on my goldwing. They sound good and fit into my old speaker housings perfectly. For the money I am happy with the item.

### ⭐⭐⭐⭐⭐ Full Balanced Sound
*by G***S on December 8, 2024*

Using these speakers as an upgrade in a Spark 40 desktop guitar amplifier. Definite improvement in balancing out the audio spectrum versus the stock speaker performance. Perfect fitment and easy to install. Includes all wiring and mounting accessories needed for a variety of applications. Familiar with Polk products for a number of years, trust their build quality and faithful musical reproduction. Pricing represents an unbeatable value - an additional positive note for choosing these. The Polk DB402 DB+ speakers are certainly another fine model of Polk's exemplary offerings!

## 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 Italy*
*Store origin: IT*
*Last updated: 2026-01-22*