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Polk Audio db651

6.5" / 6.75" 2-Way Marine Grade db Series Coaxial Car Speakers w/ Liquid Cooled Silk Tweeters

In Stock
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Marine Certified: Also great for car installs!

List price $149.99

You Save: $80.00 (53.34%)

$69.99

with warranty A Pair

+ FREE Shipping in US 48

Order within 29 hrs 8 mins to ship 4/20

Arrives by Wednesday, Apr. 22 to zip 20147

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Bundled Savings with this Product

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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!

3.75

9111

100

Polk Audio db651

$69.99

+

25% OFF

NVX SDSK2

$14.99

Special Price $11.24 ($14.99 if purchased separately)

NVX SDSK2

• Eliminates Road Noise
• Quiets Vibrations
• Stops Annoying Rattles
• Increases SPL
• Reduces Heat
• Simple To Install
• Peel and Stick Installation
• Two 10" x 10" Pieces

(Offer 1 of 1)

Combined Total Price

$81.23

You Save $3.75

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

Series
This is the manufacturer product line of speakers.
db (Polk)
Priced Per
Car Speakers are typically sold in pairs so you will receive 2 speakers for each speaker purchase on speakers marked "Priced Per Pair". If a speaker is marked "Priced Per Each" then the speaker is sold individually and each purchase you make will result in 1 speaker. High-powered tweeters, midrange and full-range pro audio for car speakers are typically sold per each speaker.
Pair
Speaker Size
Refers to the size of the speaker measured in inches. Every vehicle has standard application sizes. Please use our vehicle fitment guide for your vehicle's specific speaker sizes if you do not know them.
6-1/2" (also mounts in 6-3/4" w/ included brackets)
Design
The number of individual drivers in a car speaker. Speakers with 2 drivers are known as a 2-way, and 3 drivers are known as a 3-way. Component systems are often referred to as "separates" because the tweeter is not attached to the midwoofer (main speaker driver) and mounts separately in a location such as a door post. Component systems typically come with an external crossover so you can easily adjust the high and low frequencies sent to both the midwoofer and the tweeter. Center channel speakers are great for those looking to have surround sound in their vehicle.
2-way
Tweeter Design
Designs such as cone, dome, semi-dome, balanced dome, and whizzer are most popular. Cone tweeters are simple, efficient and typically are the most reasonably priced. Dome tweeters are used in most home speakers, and provide a smoother and more accurate sound. Semi-dome design is one with a dome placed inside a cone. A Balanced dome driver is a semi-dome with equal reproduction area given the cone and dome portions of the driver. A whizzer tweeter is a separate tweeter cone driven by the voice coil of the woofer.
Dome
Tweeter Composition
Materials such as polypropylene, silk, cloth, and paper are the most common, where as many more recent tweeters are now manufactured with composites such as Aluminum, Titanium, Mylar, and other materials.

PEI is an acronym for "Polyetherimide" which is an amorphous, amber transparent, high-performance thermoplastic.

Silk-Polymer Composite
Woofer Composition
Lightweight woofer cone materials are essential for efficient operation. Poly cones produce exceptional sound and are sturdy against various changes in temperature. Paper cones are very efficient, and when treated for moisture resistance, will perform at a high level. Poly refers to polypropylene, which is thermoplastic or fibers that are polymers of propylene. IMPP refers to injection molded polypropylene, a commonly used process and material in speakers.
Mica Injected Polypropylene (MIPP)
Woofer Surround
A speakers surround is part of the suspension system. The surround protects the cone and prevents it from being displaced as it flexes out from the basket. It is usually made of a durable material like treated foam or rubber in order to withstand the strenuous job of producing bass frequencies.
Butyl Rubber
Peak Power Handling
Peak power handling refers to the amount of power a speaker can handle during a brief musical burst. The RMS power range figure is a much more reliable rating for determining the speaker's power requirements. The Peak power handling specification is typically rated per speaker unless otherwise noted.
180 watts
RMS Power Handling
The RMS power is the amount of power the speaker requires to operate safely and properly. RMS Power Handling refers to the amount of power a speaker can handle on a continuous basis. We recommend powering your speakers or subwoofer with 80%-120% of its recommended RMS rating. The RMS power handling specification is typically rated per speaker unless otherwise noted.
60 watts
Sensitivity
An efficiency or sensitivity rating tells you how effectively a speaker converts power into sound. The higher the number, the more efficient the speaker and the louder it will play with the same input power. An efficient speaker helps you maximize your available power. Most sensitivity ratings measure the speaker's output with 1 watt of input, 1 meter from the speaker. Some speakers' sensitivity is measured with 2.83 volts of input, instead of 1 watt.
 
Efficiency (1w/1m) is not an accurate indicator of a subwoofer's output capability and should not be used as a comparison to other speakers or subwoofers to determine which one is "louder".
92 dB
Frequency Response
The range of frequencies the speaker will reproduce (lowest frequency to the highest). Bigger is better, meaning the wider the range, the better. The optimal range is 20 - 20,000 Hz (which is the range of human hearing).
35 - 22000 Hz
Impedance (Per Voice Coil)
The load value (in ohms) that the speakers present to the amplifier per voice coil - the amount of resistance to the current flow. This is a key specification as subs wired in parallel or low impedances can create problems with your amplifier and potentially void all warranties. We encourage you to ask our support department prior to purchase if you do not understand which impedance level will suit your application best.
4 ohms
Shallow Mount Installation
This means that the subwoofer/speaker is designed to be installed in areas that do not have a lot of space. Shallow mount subwoofers are typically found under a seat or behind the seat in some trucks.

Shallow mount speakers will typically have a mounting depth of 2" or less, while shallow mount subwoofers will typically have a mounting depth of 3" or less.

Yes
Top-Mount Depth
The depth when installed on top of the mounting surface. Measured from the bottom of the speaker's magnet to the bottom of the mounting holes on the rim of the speaker.
1-5/8"
Bottom-Mount Depth
The depth when installed from the bottom of the mounting surface. Measured from the bottom of the speaker's magnet to the top of the mounting holes on the rim of the speaker.
2-5/16"
Cutout Dimensions
Refers to the dimensions of the hole, measured in inches or millimeters, required to contain the speaker.
5"
Speaker Grilles
A grating or screen of metal or plastic bars or wires, mounted in front of a speaker as protection. If yes, the speakers will include matching speaker grilles. If no, there are no grilles included.
Yes
Number of Speakers
This is the number of speaker that is included in the package. Each purchase will result in receiving the number of speakers indicated here. Please note that some items will have multiple woofers in the same enclosure. For sets of component speakers, this number will refer to the number of sets of speakers (For example, 2 would indicate the purchase includes 2 woofers and 2 tweeters).

Please refer to the product image and description for further details about the speaker.

Specials with this Item

Promotions
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Warranty and Return Policy

Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider
Sonic Electronix

Summary of Customer Ratings & Reviews

Rating Distribution

5 Star
69%
4 Star
24%
3 Star
6%
2 Star
0%
1 Star
1%

Average Attribution Rating

Durability
4.7
Value
4.7
Features
4.6
Design
4.7
Usability
4.7
Luke

West Des Moines, Iowa

Overall
Durability
Value
Features
Design
Usability
Sastifying Product

October 29, 2010

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.

39 of 59 found this helpful

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Jammer

ypsilanti mi

Overall
Durability
Value
Features
Design
Usability
kind of tinny sounding

July 9, 2014

There seems to be one high frequency that is much louder than the rest around the frequency of a hi hat or cymbal. I prefer a flat response.
These speakers have that high boost which colors the sound and doesn't sound real.

33 of 52 found this helpful

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Loy

AUSTIN TX

Overall
Durability
Value
Features
Design
Usability
Polk Audio db651

June 17, 2014

I had replaced the Polk Audio db61 door speakers from some kenwood speakers that I ended up blowing. Believe it or not, they sound better!
And for the price you cant beat it anywhere.

29 of 51 found this helpful

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Roman199

Riverside, CA

Overall
Durability
Value
Features
Design
Usability
Incredible speakers (especially for the price)

November 22, 2011

Great speakers for an even better price. Very well built and sound phenomenal. Offer great highs, good mid, and surprising bass. They shake my truck even when they are barely cranked. I have a 98 GMC Sonoma with a JVC head unit running 18 watts RMS power and the speakers have plenty of power.

My only complaint is that installing the speakers was very difficult. The supplied mounting bracket was nowhere close to the right size for my truck so I had to re-drill mounts and use those horribly tiny mounting brackets they send you. The speakers are also much taller than stock and push on the door panels slightly. Grill did not even begin to fit.

Overall, though, I would recommend these speakers for anything from a stock head unit to a powerful aftermarket head with an amp. They are a major upgrade I should have done years ago. I plan on putting these speakers in every future car I own.

29 of 51 found this helpful

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jammer

ypsilanti mi, MI

Overall
Durability
Value
Features
Design
Usability
ok speaker exagerated highs

July 9, 2014

I like a flat response in speakers for realistic sound. I record music and reference the mix in my car also. The high boost makes it hard to judge a mix. might be good for some people but just too bright in one high frequency for me.

32 of 58 found this helpful

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lmg916

Sacramento,CA

Overall
Durability
Value
Features
Design
Usability
Great Speakers

September 17, 2013

When my factory radio, cd player died I decided to update my car stereo and purchased a new cd player with bluetooth. I also purchased a new set of speakers the Polk Audio db651. I have polk Audio speakers on my home stereo and that is why I selected these. I am very happy with the purchase. The sound is crisp and clear great for listening to Jazz and all types of music.

23 of 40 found this helpful

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josh

shasta lake, CA

Overall
Durability
Value
Features
Design
Usability
GREAT

August 17, 2011

These speakers were installed in a 20 ft wakeboarding boat and without an amplifier these speakers get loud and clear with no distortion.

30 of 54 found this helpful

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Steve

Toledo, OH

Overall
Durability
Value
Features
Design
Usability
Excellent value and sound

August 21, 2014

Very nice sounding speaker for a low budget co ax!

27 of 49 found this helpful

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john

winchester, KY

Overall
Durability
Value
Features
Design
Usability
polk db651

August 21, 2013

I have used these speakers with and without an amp. They sound much better with than without. I think polk makes an excellent product and I would recommend them to anyone.

17 of 29 found this helpful

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Kyle

Medford, OR

Overall
Durability
Value
Features
Design
Usability
Very nice coaxial for the price

May 29, 2013

Great coaxial, for the price. Good sound. Plays much cleaner than the factory speakers that I replaced. Not as much bass, however, so you'll probably want a subwoofer.

11 of 17 found this helpful

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Scott

Canada

Overall
Durability
Value
Features
Design
Usability
All round good speakers

September 17, 2013

One thing to note is that the DB651s do not come with mounting brackets as they are the slim version. With the DB651 however, they are included in the box. Overall the speakers are great. It's definitely not a very 'bassy' speaker, I would more compare it more towards a set of studio monitors, providing clear/clean sound.

27 of 50 found this helpful

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Allen

Sterling, Virginia

Overall
Durability
Value
Features
Design
Usability
Great Value!

September 17, 2013

I ordered this product to replace some stock speakers in my 2004 Tahoe. For some reason, I thought the the speakers would fit right in, but I needed an amp to connect them to. That was a mistake on my part. After having the speakers professionally installed, along with some extras to replace all the speakers in the Tahoe, I am glad the situation played out the way it did. I love the sound quality and everything works perfect with the Polk Audio 12" subwoofers that were installed years ago.

23 of 42 found this helpful

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Marcus

Victoria, TX

Overall
Durability
Value
Features
Design
Usability
Awesome product

September 30, 2014

These Polk speakers are great! I use them in my ice chest radios with no issues whatsoever. I will definetly be purchasing more!!

22 of 41 found this helpful

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Paul

Elkridge, MD

Overall
Durability
Value
Features
Design
Usability
Great for the price

April 19, 2014

Polk has always been a good brand. With a well adjusted stereo I can get good bass and treble as a two-way speaker is expected. The mids are alright as expected.

Four of these in my truck can provide enough thump to delay my decision on installing a sub. Everything from acoustical, rock, r&b, and whatever sound good. This is coming from an audiophile.

22 of 41 found this helpful

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nah

nunya, business

Overall
Durability
Value
Features
Design
Usability
Major step up from stock boat speakers

February 13, 2015

Like others speaker clarity and loudness are great, bass is a little weak. I'm working on a set for my Tundra next.

18 of 34 found this helpful

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Rob1

Hamburg, New Jersey

Overall
Durability
Value
Features
Design
Usability
Great Speakers

November 10, 2010

Great sound

Great speakers
Sound quality excellent perfect spectrum range coverage.

7 of 12 found this helpful

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Ryan

Jackson, MI

Overall
Durability
Value
Features
Design
Usability
Great buy!

January 1, 2012

Perfect SQ and fit perfect in the Dodge Dakota. Bass sounds better in these too!

9 of 17 found this helpful

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Tim

Canada

Overall
Durability
Value
Features
Design
Usability
Excellent Sound!

December 12, 2011

I replaced the factory speakers in my Correct Craft Super Air Nautique Team Edition wakeboarding boat. Sounds awesome! The sound is way better than any of the speakers that I tried out at the local stereo shops and I saved a pile of money by buying them through Sonic Electronix.

6 of 11 found this helpful

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Rusmo

Oil City, pa

Overall
Durability
Value
Features
Design
Usability
World of difference in a Zuk !

October 23, 2010

Replaced stock very cheap, tinny rear door speakers, 6 1/2", in 2009 Suzuki SX4 Crossover and am very, very satisfied. Had NO bass before and the extra benefit is the very crisp midrange now as well. Snipped connector plastic off of old speakers, snipped wires at cone and soldered to the tabs on the new ones, so still have a plugable design; necessary to drill my own holes for mounting and these are a perfect fit for the door panel ! This Zuk is easy to work on. And your prices are great !

5 of 9 found this helpful

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Fubar

Sarasota, FL

Overall
Durability
Value
Features
Design
Usability
Great speakers, great price

October 4, 2010

Ordered a pair of these 2 years ago to replace blown OEMs in the front. The rear OEMs finally gave out so I'm buying another pair. Quality and ease of install added to great sound from a well-known company made this a complete no-brainer. Sonic Electronix was great then (price and service) so, of course, I came back. Next, a new head unit.

3 of 5 found this helpful

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Accessory Tools and Products

Accessories added

Streetwires 25 ft. of True Spec 12 Gauge Speaker Wire

You need speaker wire to connect your speakers!

Your Price $44.95

Belva 23 ft. of True Spec 12 Gauge Speaker Wire

100% Copper Clad Aluminum, high strand count with ultra-flexible PVC blended jacket for easy installation

Your Price $14.99

12-10 AWG Butt Connectors

These yellow butt connectors are ideal when connecting thicker speaker wire your new aftermarket speakers.

Your Price $6.99

12-10 AWG Yellow T-Tap Adapters

Allows for fast and easy splicing of wires by easily tapping into the cable.

Your Price $4.49

12-10 AWG Quick Disconnect Connectors

These yellow quick disconnect connectors make it easy to connect and disconnect speaker wire your to your new aftermarket speakers!

Your Price $6.99

NVX SDSK2 Speaker Kit

Eliminates speaker panel distortion and reduces vibration, rattles, and squeaks!

Your Price $14.99

Dynamat Xtreme Speaker Kit 10415

Enough sound dampening for 2 speakers!

Your Price $17.95

Stinger Roadkill Speaker Kit

Use this to eliminate rattle from your speakers!

Your Price $13.99

Car Stereo and Speaker Installation Tool Kit

Includes Test Light, Crimp/Splice Tool, Multi-bit Screwdriver and more.

Your Price $16.99

Universal Wire Puller & Grabber

Running wires has never been easier! This wire puller allows you to run wires through those hard to reach places!

Your Price $6.99

Xscorpion 9-Piece Nylon Plastic Pry and Chisel Tool Set

Easily removes dash/trims, door clips, panels and pins, rubber grommets and vehicle emblems.

Your Price $14.99

Xscorpion WDCR2 Window and Door Clip Remover

Removes and installs handle and window crank clips.

Your Price $6.99

3 in 1 Wire Quick Splice T-Tap and Butt Connector Crimper + Wire Cutter

Used for cutting copper and aluminum wires up to 8 gauge.

Your Price $29.99

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!

Your Price $7.99

Speaker Baffles for your Speakers

Enhance the sound of your speakers with these easy to install speaker baffles.

Your Price $9.99

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Polk Audio DB651 with Sound Dampener

6.5" / 6-3/4" 2-way Coaxial Speakers (Marine Certified) • 180 Watts Max • Lightweight Dynamic Balance Polymer/Mica Composite Mineral Filled Cone • 3/4" Liquid-Cooled Silk/Polymer Composite Dome Tweeter • Durable Butyl Rubber Surround • Polarized Nickel Plated Terminals • Sensitivity: 92 dB • 4 ohm Impedance • Included Sound Dampener Material

Your Price $82.83

db651s thumbnail
Polk Audio db651s

• Peak Power: 330W
• RMS Power: 110W
• 3/4" Liquid-Cooled Silk / Polymer Composite Dome Tweeter
• Mounting Depth: 2"
• Lightweight Dynamic Balance Polymer/Mica Composite Mineral Filled Woofer Cone
• 4 Ohms Impedance
• Sensitivity: 92dB

Your Price $64.99

SPS-610 thumbnail
Alpine SPS-610

• Peak Power: 480W
• RMS Power: 160W
• 1" Wide-Range Silk Soft Dome Tweeter
• Mounting Depth: 2-1/4"
• Tuned Poly-Mica Woofer Cone
• 4 Ohms Impedance
• Sensitivity: 88dB

Your Price $99.95

Browse 3 questions and 24 answers
Hide answersShow all answers | Sort by
Why did you choose this?
Sonic Electronix Store
i have a friend that feels these are the best speakers for my harley davidson motercycle
DAVID H on Apr 7, 2015
i had a previous set and i loved it!
cristo v on Mar 19, 2015
got good reviews, is marine grade, plus the looks match my vehicle
James K on Apr 2, 2015
Price & quality. , matched set with 6x9's. Marine quality.
Gary H on Feb 12, 2015
Would like to know if these are ok for install into a 2008 Honda Goldwing GL1800.....?? Maybe speaker suggestion as well!!! Considering the Polk 501, or 651 or 651s units???
Daniel L on Oct 17, 2014
Polk Audio db651
Polk Audio db651
Bazooka MC-HON-AMK
Bazooka MC-HON-AMK
Polk Audio db651s
Polk Audio db651s
Best Answer: Great addition to my bike/trike sound system, having it in an enclosed area limits some of the thump (not much). I also upgraded the speakers to Polk marine speakers, sounds great. One thing to remember, it is open air sound, more watts more sound.
Reply · Report · lazar j on Oct 18, 2014
· Add Answer · I Have This Question Too (0)
What is the difference between db652 and db651s?
A shopper on Dec 16, 2014
Best Answer: Hello,

The "s", at the end of db651s , implies it is the SHALLOW MOUNT version of the db Series 6.5" . In the features and specs, you will see 2-5/16" vs 2" , when compared to the db651. In addition, because the db651s is Shallow, it will not travel as far and therefore will not be able to reach as low of a frequency range as that of the db651; which is also seen in the specs - 35hz vs 55hz .
Reply · Report · Sonic Electronix SStaff on Dec 16, 2014
· Add Answer · I Have This Question Too (0)

Product Summary

Manufacturer

Model Number

db651

UPC

747192112776

Weight

5.50lbs

Internal SKU

db651

Internal Product ID

9111

Sonic Electronix Wiring Guide

Wiring Diagram Legend

Warning: The image depicted shows the resistance change when wiring multiple subwoofer terminals. Please refer to your subwoofer's owner's manual for the proper wiring of its terminals. Sonic Electronix, Inc. is not responsible for damage caused to your audio system or vehicle due to improper installation. Please call tech support at 1-877-289-7664 if you require additional assistance.

Product Name: Polk Audio db651

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