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Polk Audio db351

3.5" 2-Way Marine Certified Coaxial Car and Marine Speakers

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• Peak Power: 210W
• RMS Power: 70W
• 12mm Liquid-Cooled Silk Composite Dome Tweeter with Neodymium Magnet
• Mounting Depth: 1-1/2"
• Dynamic Balance Polymer / Mica Composite Mineral Filled Cone
• 4 Ohms Impedance
• Sensitivity: 91dB

Learn more about the db351

We apologize

This item has been discontinued

Product Highlights


• Peak Power: 210W
• RMS Power: 70W
• 12mm Liquid-Cooled Silk Composite Dome Tweeter with Neodymium Magnet
• Mounting Depth: 1-1/2"
• Dynamic Balance Polymer / Mica Composite Mineral Filled Cone
• 4 Ohms Impedance
• Sensitivity: 91dB

Description


Polk Audio brand icon

Authorized dealer



Exceptional Quality and Versatility

Step up your vehicles audio performance with Polk Audio's revolutionary db351's. Cutting edge technology has allowed for an efficient speaker that has ability to accurately reproduce music like you have never heard before. A precise balance of materials including the Silk/Polymer Dome tweeter and Mica Cone woofer enable smooth roll-off and quick response at any volume. The rubber surround adds to bass response as well as increases the lifetime of the speaker under any conditions. Being marine certified, the Polk db351's will surprise you with its versatility and ability for use in many applications. The high-efficiency loudspeaker means less power is necessary for the same quality output. The revamped db Series delivers that perfect Polk Audio performance and durability like never before.

Speaker Features:

  • 3-1/2" 2-way Speakers (Marine Certified)
  • Power Handling:
    • Peak: 210 watts per pair / 105 watts each
    • RMS: 70 watts per pair / 35 watts each
  • Impedance: 4 ohms
  • Dynamic Balance polymer/mica composite mineral filled cone is stiff yet lightweight for big sound and little distortion
  • 12mm Liquid-Cooled Silk/Polymer composite Dome Tweeter with Neodymium magnet for clear, detailed highs
  • Low-mass 2-Layer 25mm Kapton voice coil former is lightweight for high sound output
  • Multi-hole mounting pattern and shallow depth for easy drop-in installations in most cars
  • Durable butyl rubber surround won’t fall apart under the stress of extreme temperatures, sunlight or time
  • Pole Plate Heat Sink promotes better heat dissipation for superior power handling and reliability
  • Acoustically inert stamped steel basket
  • Flat Spider for faster, longer excursion linear motion
  • Flexible woven tinsel leads sewn directly into Spider for greater reliability
  • Frequency Response: 90-22,000 Hz
  • Also found as: DB 351
  • Authorized Internet Dealer
  • 1-year Sonic Electronix Warranty

Priced Per Pair

Specifications & Details


Speaker Specifications
Series
Polk db Series
Priced Per
Pair
Speaker Size
3-1/2"
Design
2-way Coaxial
Tweeter Design
Dome
Tweeter Composition
Silk-Polymer Composite
Woofer Composition
Polymer/Mica Composite
Woofer Surround
Butyl Rubber
Peak Power Handling
105 watts
RMS Power Handling
35 watts
Sensitivity
91 dB
Frequency Response
90 - 22000 Hz
Impedance (Per Voice Coil)
4 ohms
Shallow Mount Installation
Yes
Top-Mount Depth (Mounting Depth)
1-1/2"
Bottom-Mount Depth
1-11/16"
Cutout Dimensions
3-1/8" x 3-1/8" 
General specifications
Speaker Grilles
No
Warranty and Return Policy
Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider
Sonic Electronix

Item Details


Manufacturer:

Model Number:

db351

Weight:

3.00lbs

Internal SKU:

db351

Internal Product ID:

9123

Product and How-to Videos


Customer Ratings & Reviews



5 star
85%
4 star
12%
3 star
0%
2 star
0%
1 star
4%



Durability
4.7
Value
4.7
Features
4.7
Design
4.8
Usability
4.8

Customer Reviews

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high quality speakers

i bought these speakers for my daughters car to upgrade from the oem junk that was in there.polk audio knows how to make speakers.these speakers sound great.they are marine certified too. polk speakers are very high quality and i think they are some of the best speakers you can buy.sonic electronix is probably the best online place to buy all your audio needs. there prices can,t be beat either! enough said just buy them.

By AngryBiker on September 4, 2012

62

found this helpful.

Rocking speakers

Bought these and modified some cans for my Harley. Matched them with a Cerwin Vega Stealth 220, also from Sonic Electronix, and at 95mph, you can still hear everything extremely well over the bike and wind, and the 220 is not pulling any amps. Matter of fact, I fused it at 10 amps no problem. Would recommend both of these products, and they are at a great price also.

By Ron on May 3, 2012

55

found this helpful.

FIts in 2013 Kia Optima

Went from the stock 2" paper cone tweeter that sounds really good (well that's what I thought) until is installed these!!

At first my system had a front stage but now I have the front sound stage is all up on the windshield and has very dynamic imaging. even at low volumes I am able it pick up many notes which were never able to be produced on stock 2".


I tuned head unit for the new polks to the song Hotel California and wow I listened to with only my dash speakers for about 30 mins. while I was tweaking my high channel. These speakers really help bridge the gap between my highs and midbass with out going with a 3way component set.

I was stuck between these polks and jbl 3.5 and very happy that I went with these.

Again the fit in 2013 kia optima with only minor altercations!

By James on January 24, 2015

53

found this helpful.

Great product

Installed these in the dash and rear pillars of my fj cruiser. Almost a direct bolt in with some modifications. Speakers came with bass blockers and can really crank out some ear piercing highs. Way better than the stock speakers. Clean clear sound.

By Paul on March 29, 2010

52

found this helpful.

Good Sound

Used in a hideaway system, perfect sound and size. Recommend to anyone looking for a small speaker with great sound.

By Jeff on November 19, 2011

50

found this helpful.

Extremely disappointed...

I bought these speakers to replace the worst speakers i have ever heard in my Toyota FJ Cruiser. Salesman said they would work well. I have owned Polk before in the home... great stuff, still use them. But these are no better than what Toyota shipped. Really crap. Would not recommend them to anyone.

By gsiphoto on May 4, 2010

50

found this helpful.

Polk Audio db351

very good sounding speakers,obviously not very good for bass but, very clear overall very satisfied.

By mike g on July 12, 2009

49

found this helpful.

Excellent Quality!

The Polk Audio db351 is the perfect replacement car dashboard speaker. Sound quality is excellent. The speakers came supplied with protective bipolar bass blockers, fitted just perfectly and were very easy to self install.

By Ron on July 12, 2012

49

found this helpful.

Excellent Quality

I purchased this speaker specificly for my 2007 Pontiac Grand Prix. It was a replacement for the original center dash speaker. The db351 sounds much better than the original speaker. I recommend this speaker as a replacement, it was a perfect fit.

By MarkyMark on April 27, 2009

50

found this helpful.

One of the best value speakers out there!

Bought to replace the overly bright memphis speakers in the dash of my 88 mustang. These are perfect as they are also more efficient. So, they play louder under the same volume. The silk dome tweeters sound refined and mid range is accurate. Overall very pleased with them. Just don't have the tilting feature of the larger speakers.

By Luke on October 7, 2014

46

found this helpful.

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