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Polk Audio DB 842 DVC

DB+ Series shallow-mount 8" subwoofer with dual 4-ohm voice coils

Item # 107DB842D

Polk Audio's DB+ Series subwoofers combine high-tech materials and advanced design to give you smooth, powerful,...

Read more from Crutchfield writer, Bob B.

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$79.99 Sale: -$20.00 off

$59.99 each

About the Polk Audio DB 842 DVC

Hard-hitting bass

Polk Audio's DB+ Series subwoofers combine high-tech materials and advanced design to give you smooth, powerful, hard-hitting bass without stressing your wallet. The DB 842 DVC 8" subwoofer boasts a rigid polypropylene cone and durable Santoprene™ surround built to handle big power over the long run. Its low-profile design means you get serious performance from a sub that takes up less space.

Hard-hitting bass

Polk Audio's DB+ Series subwoofers combine high-tech materials and advanced design to give you smooth, powerful, hard-hitting bass without stressing your wallet. The DB 842 DVC 8" subwoofer boasts a rigid polypropylene cone and durable Santoprene™ surround built to handle big power over the long run. Its low-profile design means you get serious performance from a sub that takes up less space.

Dual 4-ohm voice coils

This sub's dual 4-ohm voice coils allow you to wire your system to draw max power from your mono amp or to safely hook up multiple subs. Match a DB+ sub to a suitable enclosure, and enjoy impressive bass punch rarely found in this price range. Polk Audio tests this sub rigorously for environmental effects caused by sun, moisture, and extreme temperature changes. They even certify this sub for marine applications, so they're a great choice for your boat too.

To drive this single subwoofer, we recommend a mono amplifier rated between 185 and 375 watts RMS at 2 ohms. For more information, please refer to our article on How to Match Subwoofers and Amplifiers.

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Product highlights:

  • 8" subwoofer with dual 4-ohm voice coils
  • polypropylene cone with Santoprene rubber surround
  • marine-certified for use in boats and convertibles
  • handles up to 250 watts RMS (125 watts per coil)
  • peak power handling: 750 watts
  • frequency response: 30-200 Hz
  • sensitivity: 84 dB
  • top-mount depth: 3-3/4"
  • sealed box volume: 0.5-1.2 cu. ft.
  • ported box volume: 0.66-1.2 cu. ft.
  • grille not included
  • warranty: 1 year
  • Our 60-day money-back guarantee
  • MFR # AA9843-A
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What's in the box:

  • One 8" subwoofer
  • 1 Foam gasket
  • Eight 1-3/8" Allen head stainless steel screws
  • Wiring diagram/ Specification sheet (English/ French/ Spanish/ German/ Italian)
  • Online registration information

Customer reviews

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Polk Audio DB 842 DVC Reviews

Average Customer Review(s):

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Pros:

Cons:

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Features

Dual 4Ω Voice Coils: This woofer features dual 4Ω voice coils, for wiring flexibility. When the voice coils are wired in parallel, the woofer presents a 2Ω load. When wired in series, the woofer presents an 8Ω load.

Marine Certification: Polk DB+ series speakers are marine certified (IP56 rated), making them a good choice for boats in fresh water, convertibles, motorcycles, ATVs, and other applications where the speaker might get wet. Because they have coated steel baskets and the terminals are not covered, we do not recommend using them in salt water environments.

Dynamic Balance: Dynamic Balance is a proprietary Polk Audio technology using laser imaging to determine what combination of speaker materials create the least amount of resonance. Eliminating resonance in speakers results in a wide, smooth response and low distortion.

Sealed Box Volume: Polk recommends a sealed enclosure between 0.5 ft³ and 1.2 ft³.

Ported Box Volume: Polk recommends a ported enclosure between 0.66 ft³ and 1.2 ft³.

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Customer Q&A

Q
Crutchfield asked: Why did you buy this?
A
Restores vehicles original sound at reasonable cost. [ MICHAEL ALLEN  Jan 14, 2019 ]
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Based on previous reviews and price point. [ Russell  Dec 14, 2018 ]
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Love Polk products, combining good price point and good quality. I chose 2 Shallow 8" woofers for my reg cab 76 Chevy C10 pickup. After I create a custom sealed enclosure it should sound great. [ KYLE  Nov 24, 2018 ]
A
Because of the reviews and it fit into my factory subwoofer enclosure. It was also the only shallow mount 8' subwoofer above 2 oHm with a dual coil. [ Brandy  Sep 01, 2018 ]
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Replacement for factory sub [ Brook  Jun 20, 2018 ]
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Baswd on reviews from othee Lexus Ls 430 Mark Levinson Stereo owners [ S  May 16, 2018 ]
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dual Voice coils that allow me to get to 2 ohm input. Will be returning the DB842SVC I purchased last week. [ Robert  Apr 09, 2018 ]
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Because my whole system is Polk Audio. I really enjoy the sound quality. I'm a Polk Audio fan. [ Tim  Dec 27, 2017 ]
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I heard Polk products are good quality. [ Gerardo E. Jaim  Nov 28, 2017 ]
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Brand reputation , products specs & price [ Martin  Nov 20, 2017 ]
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This item had a five star rating for the price. [ Cameron  Sep 05, 2017 ]
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6 questions already asked

Q
Will the depth fit a stock replacement for a 2004 mitsi endeavor?
[ Michael  Apr 20, 2018 ]
1 answer
A
You can check to see if this will fit your vehicle by using our Outfit My Car tool: http://www.crutchfield.com/car/carselector.aspx For additional details on fit or installation please contact an Advisor by phone (1-800-324-9695) or online chat. They will be able to pull up your vehicle and give you the details on if this will fit and what you will need for an installation in your vehicle.
[ Krissy  Apr 23, 2018 ]  Staff
Q
Will this fit in the existing 8" sub enclosure in the door of a 2012 Mustang Coup? Especially curious about depth.
[ Dennis  Apr 09, 2018 ]
2 answers
A
I installed this in 2001 Yukon XL, with a rear speaker box. I am not sure if it will fit you application. The speaker is 4 1/2" deep as the magnet has a slight "hump" on back. Good luck.
[ Thomas  Apr 10, 2018 ]
A
The depth is 3-3/4". Keep in mind this is top mounted depth. If you have the room on the top side for the rim then you should have no problem installing this in your enclosure. If your mounting this inside the enclosure, I think you may have an issue if the depth of the enclosure is shallower than 4 inches.
[ Mark T.  Apr 09, 2018 ]
Q
Will the factory amp in my 2006 Lexus ES330 non Mark Harmon premium sound push this sub in the rear deck?
[ Sid  Feb 07, 2018 ]
4 answers
A
How many watts is the amp? Are you going to use it to power the existing speakers too? If the answer is yes. Then I would save up my lunch money for another couple weeks and invest in a mono amp dedicated to pushing the sub. I bought an open box DS 18 candy amp from _mazon for ninety bucks and am so glad I did. I know there are bigger and better amps out there, but for pushing 1, 8" sub well worth the extra ninety and extra time on the install. I didn't even bridge the amp so I'm 4 ohms and 300 watts and can double that if iI bridge to 2 ohms. Plus the amp is a third of the size of most amps. But the fact I've got it in the rear of my work van (Nissan NV200) and the thing just pumps with 2 polk 6x9 2 ways, a set of 5" JBL 2-ways up front and a pioneer 45 watt x4 mini amp . Stick with the Polk sub though, it's a really great value considering its pedigree! Good luck!
[ JOHN  Feb 13, 2018 ]
A
It all depends on the output of your current amp these subs at normal operation need 250 watts if yoir current amp doesnt have at least a 500 watts your not going to get the best performance from this Sub
[ Gerardo E. Jaim  Feb 10, 2018 ]
A
In order for your factory amp to power the sub, you will need to purchase a two ohm subwoofer. I found out the hard way after thinking factory JBL amp would power subwoofer.
[ Brandon  Feb 10, 2018 ]
A
You will want to contact an Advisor by phone (1-800-324-9695) or online chat to discuss compatibility with your factory system. They will be able to pull up your vehicle and see if this will integrate. If it does not, then they will also be able to discuss other options with you.
[ Krissy  Feb 10, 2018 ]  Staff
Q
Is this subwoofer suitable for a free air application or do I need an enclosure for it?
[ greg  Aug 10, 2017 ]
2 answers
A
I framed in an open section in the back of my work van (nissan NV 200) skipped that over priced dyna mat and used neoprene that was a wetsuit at one time along with some 3-M adhesive and a lot of caulk. I also installed 2, 3" passive radiators on either side of the sub because it was a pretty big space and closed it all up with heavy foam insulation and a 3/4" piece of plywood.
[ JOHN  Feb 13, 2018 ]
A
This is a new model and we just have the preliminary information provided by Polk at the moment. They do provide airspace recommendations for both sealed (0.5-1.2 cu. ft) and ported (0.66-1.2 cu. ft) enclosures. While they make no mention of "free Air" installations, they do state on their website that the subwoofer "Fits in any enclosure or application." I hope that helps. My Bio: https://www.crutchfield.com/bio/Ryan
[ Ryan  Aug 12, 2017 ]  Staff
Q
what amp should I match up with this? Just want to run one of these Subwoofer in my jeep
[ parmetej  Jul 24, 2017 ]
1 answer
A
Thanks for your question. For information on selecting the best amp for your sub I would recommend reaching out to an Advisor by phone (1-800-324-9695) or online chat. They will be able to help determine the differences between the amp models and help you make the best choice for your system.
[ Kenny  Jul 25, 2017 ]  Staff
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