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Polk Audio db1040

db Series 10" 4-ohm subwoofer

22 Reviews | 2 questions - 3 answers

Item # 107DB1040

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Our take on the Polk Audio db1040

Polk Audio's db Series subwoofers give you trademark Polk performance without stressing your wallet. These subs combine high-tech materials with a laser-optimized motor structure for smooth, powerful bass response.

Polk Audio's db Series subwoofers give you trademark Polk performance without stressing your wallet. These subs combine high-tech materials with a laser-optimized motor structure for smooth, powerful bass response.

The db1040 10" subwoofer boasts a rigid polypropylene cone and durable Santoprene™ surround. Polk Audio's rigorous product testing ensures long-lasting power and performance. Match a db sub to a suitable enclosure, and enjoy impressive low-frequency performance rarely found in this price range. And Polk certifies this sub for marine applications, so they're a great choice for your boat too.

To drive this subwoofer, we recommend a mono subwoofer amplifier that can put out between 200 and 400 watts RMS at 4 ohms. For more information please refer to our article on How to Match Subwoofers and Amplifiers.

Priced per speaker

Product Highlights:

  • 10" 4-ohm subwoofer
  • polypropylene cone with Santoprene rubber surround
  • marine-certified for use in boats and convertibles
  • power range: 50-270 watts RMS
  • peak power handling: 540 watts
  • frequency response: 28-200Hz
  • sensitivity: 86 dB
  • top-mount depth: 5-7/16"
  • sealed box volume: 0.66 cu. ft.
  • ported box volume: 1.25 cu. ft.
  • warranty: 1 year
  • Our 60-day money-back guarantee

This speaker surpasses the kenwood that was previously installed by leaps and bounds. The price point is perfect for the quality.

Brandon, Jefferson City, MO

What's in the Box:

  • One 10" woofer
  • 1 Rubber gasket (installed)
  • 8 Mounting screws
  • Manual (English/Spanish/French)
  • Online registration sheet

Polk Audio db1040 Reviews

Average Customer Review(s):

(22 Reviews)

Best sound for the money

Brandon from Jefferson City, MO on 4/19/2016

2000 Toyota Sienna
Crutchfield Customer Review (What's this?)

This speaker surpasses the kenwood that was previously installed by leaps and bounds. The price point is perfect for the quality.

Pros: Depth of bass and power precision

Cons: none

Great subwoofers

Jesse from fountain inn, SC on 3/19/2016

2006 Dodge Ram 1500
Crutchfield Customer Review (What's this?)

Just got 2 of these installed paired with Polk pa880 also installed Polk 3.5 in dash Polk 6x9 front door 6.5 rear all ran by Polk pa660 it sounds amazing. I replaced 2 Polk monitor 10s theses hit way harder still breaking in can't wait to hear them after. All in all great. Also got the free grill for them looks great as well .

Pros: Great tight deep bass

Cons: None

Polk db series woofer

Brandon from Mishawaka IN on 2/24/2016

Crutchfield Customer Review (What's this?)

Sounds glorious. Smooth bass

Pros: Great sound and design.

Cons: Terminal connections flimsy.

Good for old school

Marcus from Manhattan, Il on 6/10/2015

Crutchfield Customer Review (What's this?)

I listen to a lot of old school r&b. Perfect for what I listen to. Subs were installed I'm my 1989 Chevy 1500. Pushed by a focal 2100 amp. For that space it's perfect.

Pros: Perfect for old school bass

Cons: Not enough punch for new school hyper bass

sub speakers

Wrench from Maryland on 5/13/2015

Crutchfield Customer Review (What's this?)

sound very good

Pros: well built and great sound

Cons: none

Quality sound

Josh from Pennsylvania on 4/12/2015

Crutchfield Customer Review (What's this?)

I love these subs! Great quality and tight sound. They are not loud and obnoxious outside the vehicle and actually provide a very tight musical sound inside for the listener. I paired 2 subs, in 2 seperate .67 sealed boxes, wired in para with sound ordinance 1500 mono amp. Don't get me wrong they can get loud, but if you want musical wide range bass performance these can handle the demand.

Pros: Tight sound

Cons: They don't include a protective grille and they're expensive to buy. This is very annoying since the piece of protective plastic is roughly 30% the cost of the sub. Not very consumer friendly.

Love It!

jm from Check, VA on 4/1/2015

Crutchfield Customer Review (What's this?)

I use this speaker to replace a 10 inch subwoofer in my home stereo system. absolutely awesome! made a humongous difference.

Pros: excellent sound quality.

Cons: did not fit as good as the original.

great subs great value

damon from Chandler, AZ on 6/22/2014

Had these for a few months now and they sound great. $60 each was a great deal. They look good and are a great complement to any system.

Pros: Price Sound quality Build quality Clean bass

Cons: None

Polk Audio db1040

Sam D. from Phoenix, AZ on 3/10/2013

Crutchfield Customer Review (What's this?)

I think for the price and power handling these are an exellent buy (buy 1 get 1 half off in Crutchfield). I am running a pair wired in parallel on an alpine 500w RMS mono amp in a ported box and for me i dont need anymore than what these deliver. I would definatly recomend these to a friend.


Cons: The break in period seems like forever, 20-30 hrs.

polk 1040

jamie from Honolulu, HI on 5/12/2012

Crutchfield Customer Review (What's this?)

I am super pleased with the quality of this woofer, I am running a boston 300 RMS amp that compliments it perfect. I have matched it up with a S/O box and it hits really clean and crisp. It is super tough material and seems to be a great buy. I have owned Woofers from Cerwin Vega to Kicker and this one can handle it's work load. I highly recommend this woofer.

Pros: no complaints here.


pretty nice

Anonymous from gresham, or on 5/9/2012

Crutchfield Customer Review (What's this?)

i bought theses while they were buy one get one half off. at that price ithin kthey are worth it. i used these to replace two cheap mtx magnums and before i even have them broken in i can tell they sound deeper and more solid. plus they look fantastic. i am very pleased with the look, build and sound quality of these speakers. i only gave 4 stars because you get what you pay for and these are not five star subs. good for the price though.



Can't ask for more for the money!

DustinB from Kokomo, IN on 5/7/2012

Love these subs! I installed 2 of them in a custom built 1.25cu. ft. ported box and they sound AMAZING. They deliver beautiful rich bass tones and really give you the thump you're looking for when listening to rock or hip hop. I am powering them with the Polk Audio PA400.1 amp, and it delivers just the right amount of power to really make these subs perform. Worth every penny. 5 stars in every category, only negative is that the terminals arent push terminals. Not a big deal. For the money yo0u are not going to get a better performing, better sounding sub with the versatility that the db1040 provides. Also, they need relatively little power to really get going, so the subs are easy on the wallet in both the subs directly and the amplifier. I give these subs a 10 out of 10 in this price range, you will NOT be disappointed! Read on, you will only find GREAT reviews!



Quad-Cab Dodge Ram Install

RonH from Paintsville, KY on 6/23/2011

Crutchfield Customer Review (What's this?)

Put two of these subs in a custom fit box under the rear seat of a 2011 quad cab ram. Was orginally going to go with kicker, but the polks better accomodated the limited airspace (~.65 cubic ft) and were able to handle more RMS power that the comps. Still in the break-in period with mine and it sounds great. Pushing them with a boston acoustic 800.1 amp.



Old Faithful

Brandon S. from Oregon, OH on 5/4/2011

Crutchfield Customer Review (What's this?)

I installed 2 of these in a sealed box for my brother with a pound of stuffing inside and am powering them with a 600.1 Polk Audio amp. These subs deliver more than enough bass to complement any factory stereo or wallat friendly stereo system in a vehical. I owned 2 12" versions powered by the same amp now powering his system and my 12's lasted me 6 years before the surrounds finally gave out. These subs are all he asked for and more!!! The amp is still going strong too!!!



Silverado Ext cab install

KP from Huntsville, AL on 2/13/2011

Crutchfield Customer Review (What's this?)

As one would expect from Polk Audio. these 10" woofers really deliver. I installed these in my 16 year old's 2001 Silverado Extended cab using the Crutchfield "free wiring kit". These 10's put all his buddies 12" to shame. (12" are overkill for such a small area as a pickup cab) I used custom enclosures that fit like a glove. They are down firing an really give these Polks some structure. After a 20 hour break in, you can crank these Polks up to aprox 75% effiency and they are clear and defined. Absolutly no muddy sounds on the off flex. I ran these in paralle with a 2 ohm 750 w amp. Just a great speaker period. Have not run beyond 75% ( I don't want to lose my hearing) But I'm sure they will handle it. Get you a pair and you'll be happy.



Great sub for the $

Thaduke2003 from Upstate NY on 10/27/2010

Crutchfield Customer Review (What's this?)

Nice sub. The cone isn't the best looking, with a bit of a gap between parts on the front, which doesn't look particularily "cool," but I'm not in it for looks. After broken in, it pounds like a champ, but at 10", can play anything from classical to techno, classic rock to hip- hop. Great all-rounder at a KILLER price. Get the grill- looks sweet! :) Mark W.



Nice look, feel, Output

Joseph from Austin, Texas on 5/9/2010

Great shipping Crutchfield. I ordered this sub late monday night, & recieved it Friday a lil' before noon, box was in perfect condition (outside & polk box). sub sounds good especially @ the price & looks very good. Very nice deep looking cone & nice wide surround. Just make sure you have connections for the negative(female) & positive (I.D.K. what size but it is bigger that a typical female connection for a speaker.) ....regular dual female connectors wont work(maybe it's my connectors???? mine are old.........Solder or modify connector for positive... other than that the sub sounds great.



Great rec Elvis!

Richard from Upstate NY on 4/11/2010

Crutchfield Customer Review (What's this?)

Elvis took several minutes with me while i measured the dimensions of my sealed box, then from that calc and my amp spec recommnded this Polk. It puts out a lot more low bas than the woodfer I had. Thanks!



Awesome sound

Michael from Dayton, OH on 3/5/2010

Crutchfield Customer Review (What's this?)

I have two of these in my 95 Camaro paired up with two sets of db6501 components and a pa1100.5 amp running it all. These subs put out a major amount of bass and you can feel the air flowing through the car. And I don't even have them pushed to their full potential. They are dialed in about halfway on the amp without the extra 8db or subsonic switch turned on. These are nice durable well built speakers and I would recommend polk audio to everyone.




Jordan from Henderson, KY on 3/31/2009

Crutchfield Customer Review (What's this?)

Wow.. these are amazing! I put a pair of these in my Chevy Express Work Van paired with an Alpine MRP-M500... Running at 2 ohms.. These are amazing! Great sound and has the "boom" that shakes my mirrors and can feel it in your chest. Very satisfied!



great sound

Greg from conroe, tx on 7/19/2008

i have the sub installed in a .65 cu foot q logic sealed enclosure. it is in a small sedan located in the trunk behind the rear seats firing toward the back of the car. i'm giving it 200 watts rms and it sounds great. nice smooth and quick response. Quality product, i am very pleased and would recommend to anyone who wants great sound quality AND some thump to go with it.



Very Tight

Wrangler07 from 07 Wrangler on 3/28/2008

Crutchfield Customer Review (What's this?)

I bought this sub cause I wanted matching speakers. I have polks in the dash and sports bar. I got it in a 07 Wrangler and it sounds real tight. I made the recommended size box that they said. It passed my expectations. I made the box so the sub is firing down. I have it powered by an alpine MRP 450, its pushing 220 watts at 4 ohms. I have an alpine 9883 head unit that controls everything. Very satisfied over all.




Hands-on research

Product Research

Enclosure Compatibility


Polypropylene Cone: The cone is made with polypropylene, which provides durability while being lightweight and rigid. The cone is supported by a vented cone/coil coupler, which stiffens the cone for greater mechanical stability and lower distortion.

Santoprene Surround: The Santoprene surround is resistant to extremes in temperature, humidity, and exposure to sunlight for excellent long term reliability.

NOMEX Spider: The fire-retardant flat NOMEX Spider allows extended linear motion while providing highly reliable mechanical and thermal stability.

Triple-vented Kapton Voice Coil Former: Triple venting of the 4-layer Kapton Voice Coil Former, Cone/Coil Coupler and Pole Piece contribute to the high power handling and reliability of the db Series subs.

Klippel Laser Analyzed: The Polk db woofer's voice coil alignment, motor, and suspension are optimized using a state-of-the-art Klippel laser analyzer for superior cone travel linearity, resulting in a flatter response with lower distortion.

Break-In Period: Polk db subwoofers will achieve even greater performance once they are thoroughly broken-in. To break in a new db Sub, play music through it for 20 to 30 hours at moderate levels.

Enclosure Compatibility

Recommended Sealed Box Volume: Polk recommends mounting this woofer in a sealed enclosure made out of 3/4" MDF with an internal volume of 0.66 cu/ft.

Recommended Ported Box Volume: Polk recommends a ported enclosure made out of 3/4" MDF with an internal volume of 1.25 cu/ft using a 4" diameter x 12" long port.

Recommended Bandpass Box Volume: Polk recommends a bandpass enclosure made of 3/4" MDF with a total internal volume of 1.65 cu/ft. The bandpass box should have a 0.80 cu/ft sealed rear chamber and a 0.85 cu/ft ported front chamber with 4" diameter x 9" long port.

Our Product Research Team

At Crutchfield, you'll get detailed, accurate information that's hard to find elsewhere. That's because we have our own in-house Product Research team. They verify what’s in the box, check the owner's manual, and record dimensions, features and specs. We stay on top of new products and technologies to help people make informed choices.

Q & A

Customer Q&A

Crutchfield asked  
Why did you buy this?

Customer ratings, size for the planned location and research indicating a woofer of this power and size will be adequate for my listening preferences [ walter  Feb 08, 2016 ]

2 questions already asked

We have not received any answers from other customers on your question. I would recommend reaching out to an Advisor by phone (1-800-324-9695) or online chat. They should be able to help answer your question. [ Krissy  Sep 22, 2015 ]  Staff
The specs that they have on their website are a minimum allowed by the manufacturer. So .66 cubic feet would be a minimum allowed for that speaker. And to answer your question, yes, the .66 already includes the speaker displacement. If I were you, I'd make the box, or get a box that has closer to .75 cubic feet of air space inside. [ Jennifer  Sep 15, 2014 ]
We have not received any answers from other customers on your question. I would recommend reaching out to an Advisor by phone (1-800-324-9695) or online chat. They should be able to help answer your question. [ Krissy  Sep 14, 2014 ]  Staff