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Polk Audio

Polk Audio DB842 DVC - DB+ Series 8" Shallow Subwoofer for Marine/Car Sound System, 30Hz-200Hz Frequency Response, Dual 4-Ohm Voice Coils & Polypropylene Woofer Cone

  • Based on 188 reviews
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Availability: In Stock.
Fulfilled by Creative Audio
Arrives Oct 2 – Oct 3
Order within 8 hours and 57 minutes
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Features

  • POWERFUL SUBWOOFER FOR CAR & MARINE - The Polk DB842 DVC 8" Marine Certified Subwoofer is a space-saving sub with 750W peak power and features a polypropylene woofer cone, and a durable Santoprene surround built to handle big power over the long run
  • HARD-HITTING BASS FOR YOUR CAR AUDIO - With Dynamic Balance Technology, a Polk Audio proprietary, this marine subwoofer uses laser imaging to identify the best combination of speaker materials, ensuring 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. They are even tested for Salt-fog, UV & Humidity
  • WALLET-FRIENDLY POLK AUDIO SUBWOOFER - Experience powerful and smooth bass like never before with this compact subwoofer. Designed with cutting-edge technology and premium materials, this affordable sub is the ultimate choice for an audio system
  • MULTIPLE WIRING OPTIONS - The dual 4-ohm voice coils of this Polk subwoofer when wired in parallel results in a 2-ohm load, while in series presents an 8-ohm load. This allows for customized configurations and compatibility with a variety of audio systems

Brand: Polk Audio


Speaker Maximum Output Power: 750 Watts


Connectivity Technology: RCA or Speaker Wire


Audio Output Mode: Surround


Mounting Type: Boat Mount,Car Mount


Model Name: DB842 DVC


Speaker Type: Subwoofer


Special Feature: Waterproof


Compatible Devices: car


Subwoofer Diameter: 8 Inches


Unit Count: 1.0 Count


Surround Sound Channel Configuration: 2.1


Color: Black


Included Components: Literature, Speaker


Product Dimensions: 11.03"D x 11.34"W x 6.78"H


Item Weight: 5 Pounds


Impedance: 4 Ohm


Is Waterproof: FALSE


Warranty Type: Limited


Number of Items: 1


Control Method: Touch


Speaker Size: 8 Inches


Power Source: Corded Electric


Woofer Diameter: 8 Inches


Vehicle Service Type: Car


Water Resistance Level: Not Water Resistant


Customer Package Type: Standard Packaging


Audio Driver Type: Dynamic Driver


Audio Driver Size: 8 Inches


Subwoofer Connectivity Technology: Wired


Includes MP3 player?: No


Number of Power Levels: 1


Specific Uses For Product: Car, boat, ATV


UPC: 747192128180


Style: Speakers


Manufacturer: Polk Audio


Item Weight: 5 pounds


Department: Car Subwoofer


Item model number: AA9843


Is Discontinued By Manufacturer: No


Date First Available: June 30, 2017


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Oct 2 – Oct 3

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.

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  • Affirm Financing
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  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

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Top Amazon Reviews

    • Good product
Style: Speakers
Good product
Reviewed in the United States on April 22, 2025 by Adalia smith
    • Punch
Style: Speakers
Has great punch. After a few hours of break in the sub sounds great. Replaced the factory sub 2016 MDX. On stock amp, an upgraded amp on this sub would sound even better. Best sub for this price
Reviewed in the United States on December 20, 2024 by Aaron
    • Great sub for Harley bags
Style: Speakers
Good bass for the size they are better than others just the right amount of bass at 157hz on Dsp on a atg 1 500 watts mono amp
Reviewed in the United States on August 5, 2024 by David Maddox
    • Lexus ls430
Style: Speakers
Was able to wire the two voice coils in series as to not fry my amp. Sounds good but is a tight fit and not as much kick as I would have wanted. Handles bass well though.
Reviewed in the United States on October 5, 2024 by Very good
    • Amazing quality 8" subwoofer for the price!
Style: Speakers
Nothing bad to say about this subwoofer. Was going to go with a much more expensive brand but it ended up being a little too deep for the box I was putting it in. This is sounding much better than the previous sub I had. Has been handling the power im throwing at it. I would recommend this sub to anyone. ... show more
Reviewed in the United States on December 16, 2023 by Kevin J
    • What a sub!
Style: Speakers
These subwoofers really pound. I have an 8 dvc, and a 10 svc, and i love the sound of both 8 and 10. I have other subwoofers in my build, I have a 10" Kicker cvr, and a 8", and two 6.5" Memphis prx. And the polks are by far my favorite, the sound quality of the polks is a good sound, warm but punchy. And these are cheaper than all of the other ones, and that really makes them better. ... show more
Reviewed in the United States on February 18, 2023 by Justin
    • not recommended for lexus ls 430 replacement
Style: Speakers
I have nothing bad to say about this speaker. However, if buying this to replace your blown ML sub in your lexus, be warned that this speaker, run in series, only shows 6.5 ohms at an idle. the Ml amp is designed for a 12 ohm speaker and you risk overheating your amp using this speaker (especially if you like to run loud). I discussed this at length with a friend who has been in the AV industry for 20 years and he said it will work until your amp gives out.... A ML amp is far more expensive than a ML sub. I recommend getting the real deal. PS....If your sub is blown because the foam has rotted you can order a new surround for about $20 and its very simple to replace even for a novice. Hope this helps someone. ... show more
Reviewed in the United States on September 21, 2018 by Luke L.
    • Not impressed
Style: Speakers
I had high hopes for a subwoofer that claimed to handle up to 750 watts, well it never received that. The max power it received was 350 watts, I installed the oem lincoln town car alpine sub & oem sounds great Polk Audio sub blew. As a matter of fact they replaced the 1st one & second one blew, I would NOT buy this sub ... show more
Reviewed in the United States on October 2, 2024 by christopher barbaccia

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