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Polk Audio db651

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

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List price $149.99

You Save: $80.00 (53.34%)

$69.99

with warranty

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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: 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

Specials with this Item

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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.

7 of 7 found this helpful

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Brad

Wilsonville, OR

Overall
Durability
Value
Features
Design
Usability
Outragous sound

February 23, 2012

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.

3 of 3 found this helpful

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Rich

Buffalo, NY

Overall
Durability
Value
Features
Design
Usability
Smart Buy

January 9, 2012

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.

3 of 3 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.

2 of 2 found this helpful

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audio install tech

melbourne, FL

Overall
Durability
Value
Features
Design
Usability
great set of coaxials

June 21, 2011

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.

2 of 2 found this helpful

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GARY

Canada

Overall
Durability
Value
Features
Design
Usability
Great Value,SOUNDS PERFECT!

September 17, 2013

Was a direct fit for my 93 GMC Safari van,front dash speakers.No modifications or altering needed at all.

1 of 1 found this helpful

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Brandon

Monroe, GA

Overall
Durability
Value
Features
Design
Usability
Amazing if you have subs

December 17, 2014

A combination of these door speakers, Polk Audio 6'9" in the rear deck, and 2 15" MTX subs in the trunk sounds absolutly amazing. These speakers have a very very loud high end. Like if a high pitch sound plays, you risk a chance of busting your ear drums!! So i turned the high end down just a bit, and a combination of that, and the subs makes for a 10/10 sound system.

0 of 0 found this helpful

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Glenn

Clayton, NC

Overall
Durability
Value
Features
Design
Usability
Great marine grade speakers!

December 14, 2014

Great highs and lows even without an amp. Used in a Jeep soundbar where they have to compete with open air flow. Easy install and noticeably improved sound. No more worries with rain!

0 of 0 found this helpful

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Maki

Reunion

Overall
Durability
Value
Features
Design
Usability
Great affordable sound

November 17, 2014

Good product for the price. It just need more info about the use of the swivel mount tweeter.

0 of 0 found this helpful

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Connor

Reno, NV

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Value
Features
Design
Usability
Clear sound! Great mids! Overall awesome!

October 26, 2014

Nothing is better than having you speakers amplified! The clearity of sound increases significantly. I think for the money, these polks are the best on the market. Reputable company and a great product line. I have two Of the speakers in the back coupled with Polk 6x9 version that handles the same wattage in the front. Rockford Fosgate R400 amp sending 75 watts to each speaker. Had these speakers for about 4 years now and I've had a couple blow from cranking up the volume a little to much but they are cheap enough to replace every couple of years so it's no big deal. Definitely recommend!

0 of 0 found this helpful

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Francis

Evansville, IN

Overall
Durability
Value
Features
Design
Usability
Sound Great

October 23, 2014

My buddy heard my Polk Mobile Monitor separates and wanted me to put some speakers in his truck. I put these in the doors and the matching 4 x 6s in the dash. While I was putting away my tools, I could hear him cranking his radio. I looked into the truck and he was grinning from ear to ear. I told him they would sound even better once they were broken in.

0 of 0 found this helpful

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Charles

Woodbridge, VA

Overall
Durability
Value
Features
Design
Usability
A must have for Harley Davidsons

October 21, 2014

Just perfect, if you own a Harley davidson with a fairing get these speakers

0 of 0 found this helpful

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cw

Raeford, NC

Overall
Durability
Value
Features
Design
Usability
great deal

October 9, 2014

These polk speakers sound amazing for such a small size. I can't wait to get the other set installed. Sonic Electronics has the best price out there, and delivery was super fast.
Thank You Sonic

0 of 0 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!!

0 of 0 found this helpful

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mpertz

Canada

Overall
Durability
Value
Features
Design
Usability
Great speakers for the price.

September 27, 2014

These speakers are great for the price. They have excellent mids and highs. I have 2 pairs for front and back and powered by a old school kicker amp which gives them about 65w rms each. They get very loud and don't distort very easily. For the price I would definitely recommend them.

0 of 0 found this helpful

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Al

Nc

Overall
Durability
Value
Features
Design
Usability
Great product

August 30, 2014

Product is price well and seems to be very durable. This speaker can handle a lot of punishment. I love it.

0 of 0 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!

0 of 0 found this helpful

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Bo

Calera Al.

Overall
Durability
Value
Features
Design
Usability
Great speakers

July 29, 2014

The Polk audio speakers are a great speaker for the cost!!!

0 of 0 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.

0 of 0 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.

0 of 0 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

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

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 $14.99

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 $21.99

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

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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

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Alpine SPS-610

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

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Browse 3 questions and 17 answers
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Why did you choose this?
Sonic Electronix Store
very good reviews in several sites. For the price it is worth a try.
Abel V on Dec 19, 2014
4 ohm,high sensitivity,wattage correct for my application and they sound great. I have a set in my honda and soon to be in my GMC sierra.
Timothy O on Dec 16, 2014
based off of reviews and friends
Martin C on Dec 18, 2014
Great price, very loud and clear with the right amp.
Richard R on Dec 13, 2014
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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