Why Choose Crutchfield?
Great gear and expert advice
Our experts help you pick the ideal gear for your needs.Meet our advisors
Free tech support for the life of your gear.Read about our one-on-one expert help
You may return items that are complete and like new for any reason within 60 days.See the details of our return policy
Earn one point for every dollar you spend and use those points to save on future purchases.Get full details on Crutchfield Rewards
Deep discounts on car installation gear
We offer vehicle-specific installation instructions, dash kits, wiring harnesses, and speaker accessories at deeply discounted prices with car stereo and speaker purchases. Available for most vehicles.Learn more
Trusted since 1974
Our customers have trusted us with their business, and they’ve helped us win awards for our service.Check out our most recent awards
The manufacturer’s warranty always applies.See more details
Polk Audio db1040
db Series 10" 4-ohm subwoofer
Our take on the Polk Audio db1040 by Crutchfield's Dominic DeVito
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
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
- 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
Polk Audio db1040 Reviews
Average Customer Review(s):
Thanks for submitting your review
Features and Specs
|Surround Material||Santoprene rubber|
|Ideal Sealed Box Volume (cubic feet)||0.66|
|Ideal Ported Box Volume (cubic feet)||1.25|
|Port diameter (inches)||4|
|Port length (inches)||12|
|Dual Voice Coil||No|
86 dB at 1 watt
|Frequency Response||28 - 200 Hz|
|RMS Power Range (Watts)||50-270|
|Peak Power Handling (Watts)||540|
|Top Mount Depth (inches)||5 7/16|
|Bottom Mount Depth (inches)||5 7/8|
|Cutout Diameter or Length (inches)||9 1/16|
|Parts Warranty||1 Year|
|Labor Warranty||1 Year|
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.
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.
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