About the Polk Audio DB 842 SVC
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 SVC 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.
Certified for marine use
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 4 ohms. For more information, please refer to our article on How to Match Subwoofers and Amplifiers.
- 8" 4-ohm subwoofer
- polypropylene cone with Santoprene rubber surround
- marine-certified for use in boats and convertibles
- handles up to 250 watts RMS
- 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.
- warranty: 1 year
- Our 60-day money-back guarantee
- MFR # AA9842-A
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
More details on the Polk Audio DB 842 SVC
Features & specs
|Cone Material||Polypropylene Composite|
|Ideal Sealed Box Volume (cubic feet)||N/A|
|Ideal Ported Box Volume (cubic feet)||N/A|
|Port diameter (inches)||N/A|
|Port length (inches)||N/A|
|Dual Voice Coil||No|
84 dB at 1 watt |
|Frequency Response||30 - 200 Hz|
|Max RMS Power Handling||250|
|Peak Power Handling (Watts)||750|
|Top Mount Depth (inches)||3 7/8|
|Bottom Mount Depth (inches)||N/A|
|Cutout Diameter or Length (inches)||7|
|Parts Warranty||1 Year|
|Labor Warranty||1 Year|
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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