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Polk Audio db1240
db Series 12" 4-ohm subwoofer
Our take on the Polk Audio db1240 by Crutchfield's Dominic DeVito
Big power and value
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 db1240 12" subwoofer boasts a rigid polypropylene cone and durable Santoprene™ surround built to handle big power over the long run. Polk Audio tests their subs rigorously to ensure that they stand up to sunlight, moisture, and extreme temperature changes.
Match a db sub to a suitable enclosure, and enjoy impressive low-frequency performance rarely found in this price range.
Priced per speaker
What's in the Box:
- One 12" woofer
- 1 Rubber gasket (installed)
- 8 Mounting screws
- Manual (English/Spanish/French)
- Online registration sheet
- 12" 4-ohm subwoofer
- polypropylene cone with Santoprene rubber surround
- power range: 50-360 watts RMS
- peak power handling: 720 watts
- frequency response: 27-200Hz
- sensitivity: 88 dB
- top-mount depth: 6-1/16"
- sealed box volume: 0.88 cu. ft.
- ported box volume: 1.5 cu. ft.
- warranty: 1 year
- Our 60-day money-back guarantee
Polk Audio db1240 Reviews
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Features and Specs
|Surround Material||Santoprene rubber|
|Ideal Sealed Box Volume (cubic feet)||0.88|
|Ideal Ported Box Volume (cubic feet)||1.5|
|Port diameter (inches)||4|
|Port length (inches)||10|
|Dual Voice Coil||No|
88 dB at 1 watt
|Frequency Response||27 - 200 Hz|
|RMS Power Range (Watts)||50-360|
|Peak Power Handling (Watts)||720|
|Top Mount Depth (inches)||6 1/16|
|Bottom Mount Depth (inches)||6 5/8|
|Cutout Diameter or Length (inches)||11|
|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.
Marine Certification: Polk speakers are marine certified, 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.
Recommended Sealed Box Volume: Polk recommends mounting this woofer in a sealed enclosure made out of 3/4" MDF with an internal volume of 0.88 cu/ft.
Recommended Ported Box Volume: Polk recommends a ported enclosure made out of 3/4" MDF with an internal volume of 1.50 cu/ft using a 4" diameter x 10" long port.
Recommended Bandpass Box Volume: Polk recommends a bandpass enclosure made of 3/4" MDF with a total internal volume of 2.15 cu/ft. The bandpass box should have a 1.0 cu/ft sealed rear chamber and a 1.15 cu/ft ported front chamber with a 4" diameter x 12" 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.