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Polk Audio db651

6-1/2" / 6-3/4" 2-way Speakers (also Marine Certified)

4.7

(59 reviews)

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Exceptional Quality and Versatility

Step up your vehicles audio performance with Polk Audio's revolutionary db651'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 DB651'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:

  • 6-1/2" / 6-3/4" 2-way Coaxial Speakers (Marine Certified)
  • Power Handling:
    • Peak: 400 watts per pair / 200 watts each
    • RMS: 200 watts per pair / 100 watts each
    • Recommended Amplifier RMS Power: 60-100 watts
  • Lightweight dynamic balance polymer/mica composite mineral filled cone woofer
  • Marine Certified, perfect for use in marine vessels
  • 3/4" Liquid-Cooled Silk/Polymer composite Dome Tweeter
  • High Pass and Low Pass Crossover Filters
  • Low-mass 2-Layer 25mm Kapton Voice Coil former
  • Multi-Hole Mounting Pattern
  • Shallow mounting depth
  • Muscular ABS Grilles (Based on MOMO Designs)
  • Durable Butyl Rubber Surround
  • Pole Plate Heat Sink
  • Flat Spider for faster, longer excursion linear motion
  • Flexible Woven Leads sewn directly into Spider for greater reliability
  • Polarized Nickel Plated Terminals on PCB terminal board
  • Stamped Steel Basket finished in rustproof Gun Metal Gray
  • Frequency Response: 40 - 22,000 Hz
  • Sensitivity: 92 dB
  • 4 ohm Impedance
  • 1-year SonicElectronix.com warranty

Note: Polk Audio has a typo in their manual that states these speakers are 60w RMS, however we have confirmed with them that they are 100w RMS. You may view the 55w Polk Audio db651s instead.

Priced Per Pair

Speaker Specifications
Speaker Size6-1/2" (also mounts in 6-3/4" w/ included brackets)
Design2-way
Tweeter DesignDome
Tweeter CompositionSilk-Polymer Composite
Woofer CompositionMica Injected Polypropylene (MIPP)
Woofer SurroundButyl Rubber
Peak Power Handling200 watts
RMS Power Handling100 watts
Sensitivity92 dB
Frequency Response35 - 22000 Hz
Impedance (Per Voice Coil)4 ohms
Shallow Mount InstallationYes
Top-Mount Depth1-5/8"
Bottom-Mount Depth2-5/16"
Cutout Dimensions5"
Speaker GrillesYes
Warranty and Return Policy
Return Policy Standard Return Policy
Parts Warranty Duration1 year
Labor Warranty Duration1 year
Warranty ProviderSonic Electronix
Customer Review Summary for Polk Audio db651
Average Customer Rating is 4.7 out of 5 stars:
4.7
based on 59 Reviews
Share your thoughts with others:
Rating Distribution:
5 star:
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68%
4 star:
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31%
3 star:
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2%
2 star:
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0%
1 star:
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0%
what's this?
Average Attributes Rating:
Durability
4.8
Value
4.8
Features
4.6
Design
4.7
Usability
4.7
what's this?
Quick Comparison:
Most Helpful Customer Reviews:
October 29, 2010 Sastifying Product
3 of 3 people found the following review helpful:
Review by
Luke from West Des Moines, Iowa
Overall
Durability
Value
Features
Design
Usability
I got the Polk Audio db651 6.5 in speakers. I have a Dodge Dakota Extended Cab and got 2 pairs. I am VERY impressed with the sound clarity and just sheer power of these speakers. Granted it is in a truck cab but these things are extremely loud. They have great clarity at all volume levels and are able to play loud enough to make me yell at my passengers to be heard and they still didn't have any distortion. For $65 a pair they are a steal. I'm only running 22 rms thru my head unit and they can take 60 rms I believe. I highly recommend these speakers to anyone.
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June 21, 2011 great set of coaxials
1 of 1 people found the following review helpful:
Review by
audio install tech from melbourne, FL
Overall
Durability
Value
Features
Design
Usability
These Polks we use heavily at our shop, they have a good sound and decent midbass, the perform well with after market head-units/receivers. for best sound thogh a proper component set is always better.

Also, Polk Tweeters, though Silk Dome, are notorious for being "harsh" that's not necessarily a bad thing, it's just their sound signature.

Hybrid audio makes some great coaxials that are worth every penny, but with any good speaker setup you should amp the speakers.
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January 30, 2012 Great Speakers!
Review by
Curtis from Walnut Creek, CA
Overall
Durability
Value
Features
Design
Usability
These are one of the best speakers you can buy without getting into components or needing to run an amp to them to make them loud. They are very crisp and have no distortion when the music is up louder. I would definitely buy these speakers again.
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January 30, 2012 Mids and Highs Good...
Review by
Derek from Crystal City, MO
Overall
Durability
Value
Features
Design
Usability
For whatever reason I did not have any bass with these speakers in the doors of my 2005 Hyundai Elantra. The factory junkers had better bass. However, if you are using a subwoofer they will sound nice.
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January 29, 2012 Great value
Review by
Josh from Victoria BC, Canada
Overall
Durability
Value
Features
Design
Usability
Good quality speakers for the price and they look great!
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View All 59 Reviews for Polk Audio db651
Speaker Wire
Upgrade your factory speaker wire to aftermarket speaker wire and hear the difference! Using thicker gauges, newer technology, and higher quality materials, aftermarket speaker wire is key to upgrading the sound in your car.
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20 ft. of 16 AWG KICKER X-Series Speaker Wire20 ft. of 16 AWG KICKER X-Series Speaker Wire
Get high quality sound from Kicker's twisted-pair, true to gauge speaker wire.
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50 ft. of 14 AWG StreetWires Speaker Cable50 ft. of 14 AWG StreetWires Speaker Cable
Streetwires Super Cable provides a zero-grip insulation for a smooth install as well as true gauge twisted wire construction.
$29.99
50 ft. of 16 Gauge Monster XLN Series Speaker Cable50 ft. of 16 Gauge Monster XLN Series Speaker Cable
Upgrade to clean and clear sound with Monster Cable's Xtra Low Noise (XLN) construction.
$35.00
Sound Dampening Material
Get optimal sound from your new speakers with some high quality sound dampening material. It will keep the road noise out and the music inside the car.
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Dynamat Xtreme Speaker KitDynamat Xtreme Speaker Kit
Eliminates speaker panel distortion and reduces vibration, rattles, and squeaks!
$21.99
Dynamat Dynaxorb Speaker PakDynamat Dynaxorb Speaker Pak
Revolutionary damping material designed to prevent distortion caused by the back wave of a speaker interfering with the front wave.
$19.99
Dynamat Rubber RollerDynamat Rubber Roller
Install your Dynamat with ease! This heavy duty rubber roller is designed specifically to install your Dynamat products!
$18.99
Ballistic Speaker KitBallistic Speaker Kit
Eliminate speaker distortion, road noise, and rattles with this sound dampening material from Ballistic.
$15.99
Speaker Baffles, Spacers, and Depth Extenders
Mount your speakers in the location that you need with these speaker spacers, extenders, and adapters.
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Speaker Baffles for your SpeakersSpeaker Baffles for your Speakers
Enhance the sound of your speakers with these easy to install speaker baffles.
$9.99
1/2" Depth Extender for 6-1/2" Speakers1/2" Depth Extender for 6-1/2" Speakers
Need just a little more room to install your new speakers? These 1/2" spacers are just what you are looking for.
$4.99
Installation, Tools & Accessories
Get all of the tools and accessories to install your new speakers like a professional, or take your car to an expert and have them installed by redeeming professional installation cards.
 ProductPriceAdd?
Door Panel & Upholstery Remover ToolDoor Panel & Upholstery Remover Tool
The ideal tool for removing your car's door panels to replace you speakers!
$11.99
Universal Window Handle Remover ToolUniversal Window Handle Remover Tool
Designed to easily remove the manual window handles without breaking any interior pieces.
$4.99
Universal Wire Puller & GrabberUniversal Wire Puller & Grabber
Running wires has never been easier! This wire puller allows you to run wires through those hard to reach places!
$6.99
16-14 AWG Butt Connectors16-14 AWG Butt Connectors
These blue butt connectors are ideal when connecting thicker speaker wire your new aftermarket speakers!
$4.99
Tone Generators and Sound Testing Equipment
Optimize your new system's sound quality by testing and calibrating all of your components with these items.
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AutoSound 2000 CD-101AutoSound 2000 CD-101
Low frequency test CD
$12.99
AutoSound 2000 CD-102AutoSound 2000 CD-102
High frequency test CD specifically designed for the set-up and evaluation of sound system imaging and placement.
$12.99
AutoSound 2000 CD-103AutoSound 2000 CD-103
Audiophile reference series test disc for evaluation of all audio components.
$12.99
Main Product
 ProductPriceAdd?
Polk Audio db651Polk Audio db651$69.99

Product Summary

Manufacturer: Polk Audio
Model number: db651
UPC: 747192112776
Weight: 5.50 lbs
Internal SKU: db651
Internal product ID: 9111

Price Information

$119.99

–$50.00

$69.99

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Customer Testimonial

Thank you for your great services and the attentions to customer satisfaction. I will buy all my future electronic needs from Sonic Electronix, great services, fast shipping, and very low prices.

- juan from NY,NY

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