Search  for anything...
Polk Audio

Polk Audio DB522 DB+ Series 5-1/4" Coaxial Speaker for Car Audio & Marine

  • Based on 2,115 reviews
Condition: New
Checking for the best price...
$78.98 Why this price?
Save $21.02 was $100.00

Buy Now, Pay Later

As low as $13.16 / mo
  • – 6-month term
  • – No impact on credit to apply
  • – Instant approval decision
  • – Secure and straightforward checkout

Ready to go? Add this product to your cart and select a plan during checkout.

Payment plans are offered through our trusted finance partners Klarna, Affirm, Afterpay, Zip, Apple Pay, and Google Pay. No-credit-needed leasing options through Acima may also be available at checkout.

Learn more about financing & leasing here.

Selected Option

Free shipping on this product

FREE 30-day refund/replacement

To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

Availability: Only 2 left in stock, order soon!
Fulfilled by Amazon
Arrives Monday, Oct 26
Order within 5 hours and 17 minutes
Available payment plans shown during checkout
Protection Plan Protect Your Purchase
Checking for protection plans...

Recently Viewed

Style: Marine Certified


Features

  • SPEAKER FOR CAR & MARINE - The Polk Coaxial Marine Certified Speaker with peak power, 4-ohm impedance, and a 5-1/4" polypropylene woofer cone is built to reproduce high-quality music for a car audio system or boat speakers applications
  • ELEVATE YOUR CAR AUDIO SYSTEM - Door speakers with built-in crossover direct highs & lows to drivers, delivering loud bass; handle 100W RMS & boast 55-22kHz response for high-quality car sound system
  • RESONANCE-FREE SOUND - With Dynamic Balance, a Polk Audio proprietary technology, these marine/car speakers use laser imaging to identify the best combination of speaker materials and ensure a distortion-free response with wide sound dispersion
  • SPLASH-PROOF SOUND SYSTEM - Polk DB+ series speakers give thunderous sonic output in freshwater boats, motorcycles, ATVs, and others, as they have IP56 marine certification with coated steel baskets, even tested for salt-fog, UV & humidity
  • EASY TO INSTALL - Polk car door speakers provide mounting hardware and stylishly designed grilles that not only enable easy installation but also add a touch of flair to the vehicle's interior, making it an ideal choice for custom installations

Description

Polk Audio DB522 5-1/4" 2-Way Coaxial Speaker for Car & Marine. These car speakers feature a polypropylene woofer cone and 3/4" silk dome tweeter with built-in crossover, delivering smooth, precise sound for audiophile car owners on road trips. Dynamic Balance technology uses laser imaging to reduce resonance, giving wide response and low distortion. Mounting hardware and bold grilles let users interested in car audio customize any installation. These speakers for boat are rigorously tested against sun, moisture, and extreme temperatures and are certified for marine use, so they double as a reliable marine speaker, and also serve as a great car audio system. Polk Audio’s DB+ Series car subwoofers pair easily, offering value-focused, powerful bass that complements this set.

Brand: Polk Audio


Speaker Maximum Output Power: 300 watts


Frequency Response: 22 KHz


Connectivity Technology: Coaxial


Audio Output Mode: Surround


Audio Output Mode: Surround


Mounting Type: Boat Mount,Coaxial,Top Mount


Enclosure Material: Polypropylene


Speaker Type: Coaxial


Additional Features: Marine Certified


Antenna Location: For Music Players


Subwoofer Diameter: 4.76 inches


Color: Black


Is Waterproof: True


Warranty Type: Limited


Control Method: Touch


Speaker Size: 5.25 inches


Woofer Diameter: 4.76 inches


Tweeter Diameter: 4.76 inches


Water Resistance Level: Water Resistant


Controller Type: Corded Electric


Frequency Response: 22 KHz


Number of Audio Channels: 2


Impedance: 4 ohm


Connectivity Technology: Coaxial


Wireless Technology: Bluetooth


Subwoofer Connectivity Technology: Wired


Connectivity Protocol: Coaxial


Power Source: external power source


Brand: Polk Audio


Model Number: AA9522


Model Name: DB522


Built-In Media: Literature, Speaker


Warranty Description: 1 Year


Number of Items: 2


Series Number: 522


UPC: 747192127251


Global Trade Identification Number: 51


Manufacturer: Polk Audio


Age Range Description: Adult


Speaker Maximum Output Power: 300 watts


Number of Power Levels: 1


Unit Count: 1 Count


Item Dimensions D x W x H: 14.2"D x 16"W x 9.7"H


Item Weight: 1.74 kg


Compatible Devices: Car, Boat


Compatible with Vehicle Type: Boat


Audio Driver Type: Dynamic Driver


Audio Driver Size: 5.25 inches


Number Of Circuits: 1


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Monday, Oct 26

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • Zip Pay in 4
  • Financing through Apple Pay
  • Financing through Google Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Similar Products

Top Amazon Reviews

    • Great speakers, clear sound, not much bass
Style: Marine Certified
Review Image by Diego Loera
Great speakers! I bought these for our fifth wheel because the original ones sounded like tin cans, and I'm glad I spent the money and went with Polk. They fit perfectly in the existing mounting brackets. All I had to do was connect the wires and screw them in. 10 minute job. The audio is crisp, clear, and much louder than the originals. However, don’t expect much bass. They won't match the power and bass of an external speaker like the JBL PartyBox, but they can definitely get loud. ... show more
Reviewed in the United States on September 17, 2026 by Diego Loera
    • Great Exterior Speaker upgrade on a 2015 Lance 2295 Travel Trailer
Style: Marine Certified
Replacing PQN ECO 50 (5" Dia) Waterproof speakers on the exterior of a 2015 Lance 2295 Travel Trailer, which only has 1 1/8" speaker pocket depth. I added the DCO 1" Universal Spacers for 5.25" to 6" speakers, as listed by Amazon as frequently purchased together with these Polk speakers. These spacers' mounting holes matched the existing PQN Speaker holes on the side of the Lance travel trailer and the predrilled holes in the spacers matched the Polk speaker and grill holes perfectly. I used Gorilla Glue's clear silicon caulking during installation to seal the spacer and speaker assembly to the side of the Lance. The spacers and speakers installed easily and look good. If you use the PQN Speaker holes for mounting the spacer and predrilled spacer holes for mounting the speakers, the speaker grill will be slightly angled. If this bothers you then you'll have to drill new mounting holes. The speakers once turned on and letting warm up for a few minutes, provided sharp sound at midrange and above. The bass was also sharp, but just about what you would expect from a 5.25" speaker. Pretty good bass, but it is not the speakers' strong suit. Build quality is impressive especially when compared to the PQN speakers that are used by the manufacturer because the speakers use low wattage and are light weight. The Polk speakers have some weight, due to the good sized magnet. I'm happy with the upgrade and would recommend these speakers. ... show more
Reviewed in the United States on August 3, 2025 by Les W.
    • Amazing!
Style: Marine Certified
I just put these in my TJ Wrangler. What a massive upgrade! They replaced some Sony 4x6s, and they are WAY LOUDER, and WAY BETTER SOUND. The treble is brighter, and more clear. The mid-range is amazing too. I even get some bass coming out of the front speakers now too. If you have a TJ Wrangler, don't hesitate on this upgrade. ... show more
Reviewed in the United States on July 21, 2026 by Jim Jensen
    • Worth the money
Style: Marine Certified
I installed these on my motorcycle, and hooked them to my Rockford Fosgate PBR 300X2 amplifier. I went through two sets of speakers with this amp, blew out a speaker on each set. One of those sets was the younger brother of the DB522, the DB521. I realized I needed something that could handle a larger sustained RMS wattage. The DB522 has over twice the RMS wattage and over twice the peak power, so I splurged for them. However, when I put them into the bike, they didn't sound near as good. I was so frustrated I was going to sell them and try a different set of speakers. But after doing some research, I really took some time tuning all the various settings on the amp in order to get the best sound out of the speakers, and now they sound great. I love them, and can play my music loud, which is important when trying to hear over the wind. ... show more
Reviewed in the United States on October 13, 2017 by J. Foster
    • What a differene
Style: Marine Certified
These are really nice sounding speakers. I replaced the speakers in my pontoon and what a differance. Crisp clean tenor and midrange. Solid base sound, not muddled at all. Really surprised and pleased with these speakers!
Reviewed in the United States on August 2, 2026 by dbaack
    • Great product great value great sound
Style: Marine Certified
Installed these speakers in my fairing on my Harley they sound awesome loud and clear,no amplifier needed ,,will order again.great value great product
Reviewed in the United States on July 4, 2026 by Chief
    • Polk Audio DB522 DB+ Series Speakers Are a Fantastic Upgrade for My Jeep TJ Front Speakers!
Style: Marine Certified
I recently installed the Polk Audio DB522 DB+ Series 5-1/4" Coaxial Speakers in my 2002 Jeep Wrangler TJ front speakers, and they’ve absolutely transformed my audio experience! These speakers fit perfectly in the factory location with 3d printed adaptor, and installation was a breeze, taking about 30 minutes. The sound quality is outstanding—crisp highs, rich mids, and surprisingly punchy bass for their size, thanks to the 300W peak power and marine-certified design. Whether I’m blasting rock on the highway or hip-hop on off-road trails, the audio stays clear and distortion-free, even with the top down. The IP65 waterproof rating ensures they handle dust and splashes like champs, perfect for my rugged adventures. Durable, stylish, and phenomenal sound—highly recommend these Polk Audio speakers for any Jeep TJ owner looking to upgrade their sound system! ... show more
Reviewed in the United States on August 29, 2025 by Russ Hamstring
    • I expected alot more out of these speakers the factory speakers sound better I sent the polls back
Style: Marine Certified
I have used polk speakers in automotive boat and home situations and have always been more than pleased. these speakers were for my motorcycle they had a better decibel rating and the cone was made of a better material than the factory speakers but at 50 mph I couldn't hear them play and the factory speakers I could hear clear at 65 I was looking for a higher quality of sound and I didn't get that either I'm going to try something else ... show more
Reviewed in the United States on March 2, 2022 by Chuck G

Can't find a product?

Find it on Amazon first, then paste the link below.
Checking for best price...