



🌊🔊 Compact power that rides the waves and rules the road!
The Polk Audio DB842 SVC is an 8-inch shallow mount subwoofer designed for both marine and car audio systems. It delivers up to 750 watts peak power with distortion-free bass thanks to Polk’s Dynamic Balance Technology. Built tough with an IP56 waterproof rating and durable materials, it withstands harsh marine environments while fitting compactly in tight spaces. Ideal for professionals seeking premium, wallet-friendly bass performance on land or sea.




| Speaker Size | 8 Inches |
| MP3 player | No |
| Controller Type | Voice control |
| Color | Black |
| Is Waterproof | True |
| Audio Output Mode | Surround |
| Mounting Type | Boat Mount,Car Mount |
| Material Type | Metal |
| Speaker Type | Surround Sound |
| Additional Features | Waterproof |
| Subwoofer Diameter | 8 Inches |
| Item Weight | 6.9 Pounds |
| Item Dimensions D x W x H | 11.03"D x 11.34"W x 6.78"H |
| Unit Count | 1.0 Count |
| Power Source | Corded Electric |
| Frequency Response | 200 KHz |
| Speaker Maximum Output Power | 750 Watts |
| Compatible Devices | car |
| Connectivity Technology | Coaxial |
M**
Clean, tight bass! Worth more than it's price!
I built a sweet DIY bluetooth party speaker for my daughter's softball teams walkup music. I got this sub to install under the speaker box and let me tell you, it thumps hard! Very clean, tight bass. I'm running 200 watts to it and there's no clipping or distortion, it's a great subwoofer.
H**1
Nice sub
Love it - great bass from a small package!
L**D
Highly recommend
I bought this as a replacement for a factory speaker, and the difference is night and day. The Polk Audio DB842 sounds so much better, cleaner, deeper, and overall more powerful. Installation was straightforward, and it instantly upgraded my sound system. Very pleased with the quality and performance. Highly recommend if you’re looking to upgrade from stock speakers!
S**P
Sounds great with lots of bass
Sounds great paired with a cheap Taramp's TL 1500 amplifier. I can't believe one sub sounds so good in my El Camino.
J**B
Love it
Great speakers! Works well, stong bass
Y**.
High expectations
I am running all Polk speakers so I wanted a matching sub to go along with it. This unit is perfect. I have not yet installed but I have high expectations that this unit will perform as well as all previous Polk products I have used...Only issue.... Made in China!!!!!!!!! This is getting ridiculous and stating on the unit "Designed and engineered in US" means nothing. Come on Polk, you can do better than this. I would have paid more for made in the U.S.Bring back the C4 subwoofer and I would buy one (if you made it here!Update 10/8/22Finally got all the interior replaced in truck with new stereo system & wiring installed. This sub absolutely pounds!Current set up is Kenwood Excelon KDC-X705 deck, Kenwood amps (KAC-PS704EX 4/3/2 channel running front Polk 6.5" coaxials on A channel and this sub bridged on B channel. KAC-PS702EX 2 channel running Polk 6"x9" 3 ways. All speakers mounted to doors). Sub is mounted in a sealed enclosure behind the seat (where the fuel tank was installed from factory) that incorporates the amp rack.This is all installed in a very well insulated '65 Chevy truck. Even in a bigger vehicle I would not hesitate to recommend this sub to a properly wired and powered system. The clarity and tight bass is just right for my application and makes a huge difference in the overall sound quality; especially in such a small space.
W**B
Very nice replacement subwoofer
I have an MTX amplified bass tube in which I blew the original speaker. This one fit perfectly into the enclosure and once broken in and tuned, makes great bass for my application. Highly recommended replacement woofer for lower powered systems or oem dealer subs.
**Y
Baby Boom Boom!
You know, I am getting quite fed up with sellers not including all hardware necessary to use the product. For example, screws without a Philips head impression. Instead, they are including screws that require an Allen wrench, and not the standard size either. Do they include the actual Allen wrench? No! These tools are inexpensive, and they cannot include them????I thought it'd never get here. Thanksgiving has just past, and apparently things get backed up the following day. The subwoofer appeared well packaged in an amazon box. The OEM box, Mint! Everything was in tact.In addition, I found a grill that the screw hole placement is an exact match to the screw holes on the subwoofer. I don't have to worry about the box/ enclosure matching up. I purchased a new one and I make my own mounting holes. That was one less headache to face.I have provided pictures and the subwoofer specs. Saves time from bouncing back and forth from Manufacture to amazon, and vise versa.Once the box/ enclosure arrives on December 2nd, I will put it together, connect the wires and give Baby Boom Boom a few frequency tests I will report my findings.Happy Holiday amazonee's! :-)
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