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Polk Audio db651

6-1/2" / 6-3/4" 2-Way db Series Coaxial Car Speakers (Marine Certified)

  • 4.6

(83 reviews)

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Price Information

$149.99

–$80.00

$69.99

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Why Shop Sonic?

SONY Marine Gear Giveaway

Customer Testimonial

This was the first time i did business with your company and i was very happy with your staff. I look forward to doing business with you again in the near future and will recomend your company to all my friends
best wishes.
andre audin

- dre from ft lauderdale fl

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  • Get 25% off Sound Dampening Speaker Kit with Purchase!
    For a limited time, get 25% off of the NVX SDSK2 Speaker Kit with a qualifying pair of speakers! Sound dampening will eliminate rattles, insulate against heat, and also improve the sound and output of your speakers!
    db651 thumbnail
    +
    25% Off
    SDSK2 thumbnail
    =

    $81.23

    (was $84.98)

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: 360 watts per pair / 180 watts each
    • RMS: 120 watts per pair / 60 watts each
  • 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

Priced Per Pair

Speaker Specifications
Speaker Size 6-1/2" (also mounts in 6-3/4" w/ included brackets)
Design 2-way
Tweeter Design Dome
Tweeter Composition Silk-Polymer Composite
Woofer Composition Mica Injected Polypropylene (MIPP)
Woofer Surround Butyl Rubber
Peak Power Handling 180 watts
RMS Power Handling 60 watts
Sensitivity 92 dB
Frequency Response 35 - 22000 Hz
Impedance (Per Voice Coil) 4 ohms
Shallow Mount Installation Yes
Top-Mount Depth 1-5/8"
Bottom-Mount Depth 2-5/16"
Cutout Dimensions 5"
Speaker Grilles Yes
Warranty and Return Policy
Return Policy Standard Return Policy
Parts Warranty Duration 1 year
Labor Warranty Duration 1 year
Warranty Provider Sonic Electronix
Customer Review Summary for Polk Audio db651
Average Customer Rating is 4.6 out of 5 stars:
  • 4.6
based on 83 Reviews
Share your thoughts with others:
Rating Distribution:
5 star:
.
.
65%
4 star:
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29%
3 star:
.
.
5%
2 star:
.
0%
1 star:
.
1%
what's this?
Average Attributes Rating:
Durability
  • 4.7
4.7
Value
  • 4.7
4.7
Features
  • 4.5
4.5
Design
  • 4.7
4.7
Usability
  • 4.7
4.7
what's this?
Quick Comparison:
Most Helpful Customer Reviews:
October 29, 2010 Sastifying Product
6 of 6 people found the following review helpful:
Review by
Luke from West Des Moines, Iowa
Overall
  • 4.0
Durability
  • 5.0
Value
  • 5.0
Features
  • 4.0
Design
  • 4.0
Usability
  • 5.0
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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February 23, 2012 Outragous sound
2 of 2 people found the following review helpful:
Review by
Brad from Wilsonville, OR
Overall
  • 5.0
Durability
  • 5.0
Value
  • 5.0
Features
  • 5.0
Design
  • 5.0
Usability
  • 5.0
Golden crisp sound rather hitting highs or lows. These polk speakers hit hard an clear! However dont expect bass from these speakers, they arent made for that purpose, but if you also have subs the sound in your car will be perfect. Hope this helps- Brad.
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January 9, 2012 Smart Buy
2 of 2 people found the following review helpful:
Review by
Rich from Buffalo, NY
Overall
  • 5.0
Durability
  • 5.0
Value
  • 5.0
Features
  • 5.0
Design
  • 5.0
Usability
  • 5.0
I have owned these speakers for about 6 months now and found them to be very reliable. They are stock replacements which made them easy to install, and easily handle the extra wattage of my aftermarket headunit. Value wise, I'd say they are well worth it.
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August 17, 2011 GREAT
2 of 2 people found the following review helpful:
Review by
josh from shasta lake, CA
Overall
  • 5.0
Durability
  • 5.0
Value
  • 5.0
Features
  • 4.0
Design
  • 5.0
Usability
  • 5.0
These speakers were installed in a 20 ft wakeboarding boat and without an amplifier these speakers get loud and clear with no distortion.
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June 21, 2011 great set of coaxials
2 of 2 people found the following review helpful:
Review by
audio install tech from melbourne, FL
Overall
  • 3.0
Durability
  • 5.0
Value
  • 4.0
Features
  • 3.0
Design
  • 4.0
Usability
  • 4.0
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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View All 83 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.
  Product Price Add?
20 ft. of 16 AWG KICKER X-Series Speaker Wire 20 ft. of 16 AWG KICKER X-Series Speaker Wire
Get high quality sound from Kicker's twisted-pair, true to gauge speaker wire.
$17.95
50 ft. of 14 AWG StreetWires Speaker Cable 50 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.
$39.99
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.
  Product Price Add?
NVX SDSK2 Speaker Kit NVX SDSK2 Speaker Kit
Eliminates speaker panel distortion and reduces vibration, rattles, and squeaks!
$14.99
NVX SDRLR1 Sound Dampening Rubber Roller NVX SDRLR1 Sound Dampening Rubber Roller
Install your Sound Dampening with ease! This heavy duty rubber roller is designed specifically to install your NVX products!
$8.95
Speaker Baffles, Spacers, and Depth Extenders
Mount your speakers in the location that you need with these speaker spacers, extenders, and adapters.
  Product Price Add?
Speaker Baffles for your Speakers Speaker 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" Speakers 1/2" 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.
$8.99
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.
  Product Price Add?
Car Stereo and Speaker Installation Tool Kit Car Stereo and Speaker Installation Tool Kit
Includes Test Light, Crimp/Splice Tool, Multi-bit Screwdriver and more.
$14.99
Door Panel & Upholstery Remover Tool Door Panel & Upholstery Remover Tool
The ideal tool for removing your car's door panels to replace you speakers!
$11.99
Universal Window Handle Remover Tool Universal Window Handle Remover Tool
Designed to easily remove the manual window handles without breaking any interior pieces.
$11.99
Universal Wire Puller & Grabber Universal Wire Puller & Grabber
Running wires has never been easier! This wire puller allows you to run wires through those hard to reach places!
$8.99
22-18 AWG Butt Connectors 22-18 AWG Butt Connectors
These red butt connectors are perfect for connecting the speaker wire when replacing your factory speakers!
$4.99
16-14 AWG Butt Connectors 16-14 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.
  Product Price Add?
Scosche SPL Meter Scosche SPL Meter
Monitor the noise level of your new car audio system with this SPL meter measuring from 60-135 dB.
$24.99
AutoSound 2000 CD-101 AutoSound 2000 CD-101
Low frequency test CD
$12.99
AutoSound 2000 CD-102 AutoSound 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-103 AutoSound 2000 CD-103
Audiophile reference series test disc for evaluation of all audio components.
$12.99
Main Product
  Product Price Add?
Polk Audio db651 Polk 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