db1040 | 270 Watt 10" 4-ohm db Series Car Subwoofer | Polk Audio

Polk Audio db1040 (FREE Upgrade to 2017 Model)

270W 10" db Series Single 4 ohm Marine Certified Subwoofer

270W 10" db Series Single 4 ohm Marine Certified Subwoofer

• 540W Peak
• 270W RMS
• Single 4 Ohms
• Polypropylene Cone
• Santoprene Rubber Surround
• Marine Certified


List price $119.99
Save: $30.99


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General Features:

  • 10" Single 4 Ohm db Series Subwoofer
  • Power Handling:
    • Peak: 540 watts
    • RMS: 270 watts
  • Recommended power range: 150 - 270 watts RMS
  • Impedance: 4 Ohms
  • Polypropylene cone
  • Santoprene rubber surround
  • Completely marine certified
  • Integrates cutting edge technology for optimal bass performance
  • Designed for sealed or ported enclosures
  • Mounting depth: 6-1/16"
  • Frequency response: 28-200 Hz
  • Sensitivity: 86 dB
  • db Series Subwoofer Grill Available
  • Authorized Internet Dealer
  • 1-year Sonic Electronix Warranty

Product history:

Polk Audio DB 1042 SVC thumbnail
(newest, current model)
Polk Audio db1040 thumbnail
(previous model, replaced by Polk Audio DB 1042 SVC (DB1042SVC))
Polk Audio db104 thumbnail
(previous model, replaced by Polk Audio db1040 (FREE Upgrade to 2017 Model))
Subwoofer Specifications
Subwoofer Series
db (Polk Audio)
Subwoofer Size
Peak Power Handling
540 watts
RMS Power Handling
270 watts
Voice Coil(s)
Impedance (Per Voice Coil)
4 ohms
Frequency Response
28 - 200 Hz
86 dB
Xmax (millimeters)
7.5 mm
Subwoofer Design
Round / Circle
Main Cone Color
Woofer Composition
Woofer Surround
Santoprene Rubber
Magnet Structure
Subwoofer Grille
Optional (Accessory required and sold separately)
Re-Cone Kit Available
Recommended Enclosure Specifications
Recommended Enclosure Type
Ported / Vented
Minimum Sealed Box Volume
0.66 cubic feet
Maximum Sealed Box Volume
0.66 cubic feet
Minimum Ported Box Volume
1.25 cubic feet
Maximum Ported Box Volume
1.25 cubic feet
Top-Mount Depth
Cutout Diameter
Shallow Mount Installation
What is in the box?
WITB: Subwoofers
User manual
Authorized Dealer
Authorized Dealer
Authorized Dealer
Warranty and Return Policy
Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider
Sonic Electronix
Polk Audio db1040 (FREE Upgrade to 2017 Model)

Polk Audio db1040 (FREE Upgrade to 2017 Model)



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Overall rating distribution

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By feature average rating



January 4, 2010

Big BOOM for small Bucks!

Easily handles 200w RMS. Sounds as good or better than similar 'popular' subs costing 3x as much.


found this helpful.


October 20, 2014

Great sound in sealed double enclosure

Although I've spent limited time listening to the system in my boat cabin (where the Polks reside), so far I'm happy with the sound. They're installed in a dual sealed enclosure (I think 0.7cuft per driver) and they are driven by the 5th channel on a Cadence F100-5 amp and complementing four MB Quart PVL216 6.5" full-range component speakers (which I really like). I'm much happier with the "neutrality" and accuracy of this setup as compared to a single 10" sub in a vented enclosure, which was boomier and had obvious peaks at certain frequencies that obviously colored the music (rather than just reproducing it). The Polks are tight and play every frequency evenly (I listen mostly to 70s/80s rock, fusion and prog). I have not tried any other subs in this enclosure so I can't compare them to another brand or style, but I would definitely buy them if I had to do it over again.


found this helpful.


January 23, 2011

Sound Amazingg!!!

I got two of these for Christmas along with the 1000.2 watt crunch amp and they dound amazing in my dodge ram. I am in a family of subs and these top all. Great value and sound Amazing!! must have


found this helpful.


August 30, 2011

Provides the Missing Bass

This sub works great. Previously, my '02 LeSabre had nice sound with a Clarion head unit driving Sony ExPlode speakers in the door and back. I purchased this sub, an enclosure with a Jensen amp recommended by the excellent phone hostess. Within a week I had it professionally installed and I tuned the bass to fill in what was missing. It provides oomph and subtle warmth. when cranked, it performs admirably without cracking. A track on Neil Young's Lenoise album literally rattles my teeth. I highly recommend this sub and the matching Jensen amp.


found this helpful.


September 17, 2013


These work great for the money. Running 2 ohm at 300w each... Plenty of bass


found this helpful.


February 7, 2011

Good sub!

Put one of these in a friends truck on a MA audio amp. Sealed. Sounds great for what he needed.


found this helpful.

Lemon Cove

August 5, 2013

For "normal" listening tastes

The db1040 works perfectly to fill in the bass on normal full range music. I have this powered by the sub out of a Polk 5CH amp that is also powering my 2 sets of Focal 5.25" coaxials. The blend of the bass from the db1040 and the other speakers provide a nice and "full" listening experience in my vw camper van.


found this helpful.

Bobby T

March 23, 2012

Great Subs!

I bought two of these for my 94 accord and ran them too a 2 ohm load (1000watts 500 each) and these little 10s pound! great subs for the price and they do get loud! i would recommend these to anybody looking for some good sound on a budget!


found this helpful.


June 30, 2010

Great Value

Have 2 of them in the back seat of a boat they sound great and hit pretty good for what you get.


found this helpful.


June 18, 2010

ear hurting bass!!!!!

I just got 2 of these bad boys and woah. they are only hooked up at 4ohms getting 300watts, and they are twice as loud as my 2 comp MA audios that were getting 500watts each at 1ohm and I only have my amp at a 1/4 gain for the break in period and my can hear me coming from about a mile away and there is no looking out the rear view mirror cause it rattles so much. There is absolutely no cons to this sub all pros. So if your tight on cash they are the sub for you


found this helpful.

Lemon Cove

August 5, 2013

Just as hoped for

The Polk db1040 is just the ticket. It powers my 2 sets of Focal 5.25" coaxials and a 10" Polk sub thru an Alpine head unit. I have very good dynamic range and no distortion at levels that can go way louder than I will ever need.

I like the remote (wired) subwoofer level control to adjust for the varying EQ on my music.

An older Alpine 5 ch amp I have in another car tends to overheat and cut out. I've never had that happen in the 6 months of use since I installed the Polk. I'm very satisfied.


found this helpful.


January 9, 2014

Love em

Have 2 of these in a sealed box running 250RMS to each of them. They are clear and have plenty of low end. When I first got them I was like eh.....I could use a little more output because I'm used to my JL 12w3v3 but once they broke in they really took off and play all types of music great and get LOUD. Tight on rock (feel it in my chest), boom on hip hop/rap (shakes the whole interior). I recommend them to everyone that is looking for an amazing budget sub. I still like my JL's a little more but they are bigger and get more power and cost $200 more. Better than the Power Bass 10's I had though.


found this helpful.


September 10, 2013

db1040 Subwoofer

I was originally skeptical about this sub due to the low cost and low wattage ratings, but after having this sub for about six months, (and after having been broken in), I am definitely very happy that I purchased it. It doesn't pack as much punch as some other subs that I have owned (Alpine's, JL's) but those were also higher powered and in specific boxes designed for them. This sub is very clean sounding and adds a great low end to your music. I would recommend using a 600 RMS or higher amp however, the amp that I am using is 400 max (about 185 @ 4 Ohms), and it is definitely under powered so I can't crank the volume for fear of clipping.


found this helpful.


March 9, 2018

These sound awesome

The following review is for DB 1042 SVC, which is a part of the bundle you are viewing.

Great looking sub and unboxing was very satisfying. lol........they hit hard and sound great


found this helpful.


February 3, 2018

Great sound

The following review is for DB 1042 SVC, which is a part of the bundle you are viewing.

Best sound for the money for sure! It handles all the power you throw at it with ease.


found this helpful.
Wiring Guide to Wire 1 Polk Audio db1040 (FREE Upgrade to 2017 Model) Subwoofer

Mono Amp

2 Channel Amp - Bridged

Wiring Guide to Wire 2 Polk Audio db1040 (FREE Upgrade to 2017 Model) Subwoofers

Mono Amp

2 Channel Amp

4 Channel Amp - Bridged

Wiring Guide to Wire 3 Polk Audio db1040 (FREE Upgrade to 2017 Model) Subwoofers

4 Channel Amp

Wiring Guide to Wire 4 Polk Audio db1040 (FREE Upgrade to 2017 Model) Subwoofers

Mono Amp

Mono Amp - Option 1

2 Channel Amp

2 Channel Amp - Bridged

4 Channel Amp


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270W 10" db Series Single 4 ohm Marine Certified Subwoofer


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