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Polk Audio DXi691

6"x9" 3-way car speakers

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Our take on the Polk Audio DXi691

by John Pollard
Polk Audio

Why replace your car's original speakers?

The speakers that originally came in your car were made from inexpensive materials, designed to create acceptable sound at the lowest possible cost to the manufacturer. If you love music, you deserve better. Name-brand aftermarket speakers deliver fuller, richer sound with considerably more detail and nuance, and they're capable of playing louder and cleaner than factory speakers. Connect new speakers to your factory radio and you'll get the best possible sound from your dealer-equipped system. Pair them up with a new car stereo for a level of enjoyment that can rival a high-fidelity home audio experience.

Enjoy your music even more

Go ahead, circle the parking lot till your favorite song is over. Polk Audio's DXi Series speakers will make you want to hit "repeat" so you can hear it all over again. Polk uses a high-tech approach and ideal materials to give your tunes an exciting new edge.

Precision woofers showcase your music

The DXi691 speakers feature 6"x9" polymer composite cones that are lightweight and stiff, so they can create a big sound with minimal distortion. Polk analyzes their drivers in motion to ensure that cone movement is even and precise. Polk also uses laser imaging to craft woofer cones that are perfectly balanced to resist distortion-causing resonances.

Polk Audio DXi691

Silk/polymer and aluminum dome tweeters broadcast sweet sound

Rest assured, you'll hear every detail of your most enthralling musical moments. The 1" silk/polymer dome tweeter brings out the high-frequency highlights in your music, while a 3/4" aluminum dome supertweeter adds breathtaking dimension. From an intensely quiet acoustic pluck to the most exhilarating electric solo, it'll be a very entertaining ride.

See more info on this item

Highlights:

  • 6"x9" 3-way car speakers (pair)
  • polymer composite woofer with butyl rubber surround
  • 1" liquid-cooled silk/polymer composite dome tweeter
  • 3/4" aluminum dome supertweeter
  • power range: 2-100 watts RMS (300 watts peak power)
  • frequency response: 35-22,000 Hz
  • sensitivity: 93 dB
  • top-mount depth: 3-1/4"
  • warranty: 1 year
  • Our 60-day money-back guarantee

Hands-on research from the Crutchfield Labs (what are the Labs?)

Features and Specs
General
Design
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3-way
Tweeter Design
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1" Dome
Tweeter Composition
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Silk/Polymer
Woofer Composition
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Bi-Laminate Composite
Woofer Surround
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Rubber
Parts Warranty
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1 Year
Labor Warranty
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1 Year
Specifications
Sensitivity
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93 dB at 1 watt
Frequency Response
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35 - 22k Hz
RMS Power Range (Watts)
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2-100
Peak Power Handling (Watts)
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300
Impedance (Ohms)
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4
Top-mount Depth (Inches)
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3 1/4
Bottom-mount Depth (Inches)
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3 7/8
Product Research
What's in the box?

Download owner's manual

  • Two 6x9 Three-way speakers
  • 2 Grilles
  • 2 Bottom mount adapter rings
  • Eight 1" Self-tapping screws
  • 8 Speed clips
  • 8 Adhesive backed grille pads
  • Owner's manual (English/ Spanish/ French/ German/ Italian/ Portuguese)
  • Online product registration information

Scratch & Dent items may be missing non-essential accessories. In some cases the manufacturer's accessories have been replaced with generic equivalents.

Our Product Research Team

At Crutchfield, you'll get detailed, accurate information that's hard to find elsewhere. That's because we have our own in-house Product Research team — they open the box, verify contents, check the owner's manual, and record dimensions, features and specs. We stay on top of new products and technologies to help people make informed choices.

Features

High Efficiency Design: The Polk Audio DXi Series speakers feature a high efficiency design; meaning better sound and more volume using less power.

Dynamic Balance Driver Technology: Dynamic Balance is a proprietary Polk Audio technology using laser imaging to determine what combination of speaker materials create the least amount of resonance. Eliminating resonance in speakers results in a wide, smooth response and low distortion.

Klippel Optimized Components: For a driver to reproduce complex sounds accurately, the cone must move exactly the same distance and manner in both directions. The Klippel distortion analyzer, a device that uses a laser and sophisticated software to do large-scale analysis of drivers in motion, lets Polk optimize the speaker's motor structure, voice coil alignment, and suspension to yield the best possible performance.

Composite Cones: Each speaker features a Dynamic Balance, Bi-Laminate composite, polypropylene cone woofer. These composite cones feature tremendous stiffness-to mass ratio, resulting in faster transients and finer detail.

Rubber Surrounds: For a smoother response and improved durability, the speaker uses rubber surrounds.

Tweeters: The DXi 691s feature a 1" silk/polymer dome tweeter and a 3/4" aluminum dome super tweeter for clear, accurate highs. The tweeters employ light-weight neodymium magnets for higher efficiency.

 
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Polk Audio DXi691 Reviews

Average Customer Review:

23 people say:

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4 out of 5

Great Speakers

Written By J, Charleston on Saturday, September 06, 2014
Crutchfield Customer Review (What's this?)
 
Sound is clear and bass works much better than my stock speakers. If Crutchfield recommends you to purchase a mounting bracket, make sure you look for one online because it'll save a lot of headaches trying to make them fit.
Pros:
Easy to install Great sound quality
Cons:
Didn't fit my car perfectly so I had to purchase mounting bracket. Not much of a con but would've been nice if Crutchfield also sent me the bracket so I wouldn't have to spend time looking for one.
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5 out of 5

Polk Audio DXi691

Written By Travis c, Scottsville on Saturday, August 23, 2014
 
These polls will flat out rock. Tight low end bass and bright crisp highs if you're looking for a 6x9 these are a must have
Pros:
Everything about these are great
Cons:
No - to these
1 out of 1 people found this helpful
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4 out of 5

DXi691 Review

Written By Macpin, Honolulu, HI on Friday, July 25, 2014
Crutchfield Customer Review (What's this?)
 
The Polk Audio DXi691 is an excellent marine certified set of car audio speakers. Living on an island warrants the need to have this amount of resilience to the environment. The DXi691 speakers are very crisp in the highs and solid in the mid bass frequencies. To get the most out of these speakers, I strongly recommend a head unit with more than 3 integrated digital equalizers. The DXi691's 3-way setup will sound brighter and more dynamic. Its lowest frequency is rated at 35Hz which I heard after the break-in period. I mounted them in properly soundproofed doors of my Dodge Ram 1500 Quad Cab. It takes a lot to reach 35Hz so I recommend adding an enclosed marine certified subwoofer to achieve the lower bas frequencies. The DXi691 speakers are a great replacement of factory speakers. The sensitivity rating is over 90 dB which means you really need to have those equalizers to better tune to your liking.
Pros:
Great sound and frequency range for highs and mid bass.
Cons:
Head unit needs to have an equalizer with more than 3 bands to better tune to your liking. Recommend adding an enclosed subwoofer to cover the lower bas frequencies.
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4 out of 5

Good sound

Written By JLM Tech, Jackson NJ on Monday, July 21, 2014
Crutchfield Customer Review (What's this?)
 
Good sound. Replaced weather beaten OEM in the rear deck
Pros:
Nice souns. Easy drop in.
Cons:
None to speak of
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5 out of 5

Good Sound

Written By Green, Asheville, NC on Sunday, June 29, 2014
Crutchfield Customer Review (What's this?)
 
Sounds great, but really require an amplifier if installing with a factory or even aftermarket head unit as the system will sound underpowered. After I installed an amp, the sound from the DXi691s is clear, balanced and plenty loud. Definitely worth the investment, but make sure to save some money for an amp if you're replacing a factory system
Pros:
Great high and mids, bass is adequate, plenty of volume
1 out of 1 people found this helpful
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5 out of 5

Great sound

Written By Homer, Branson,MO on Tuesday, June 10, 2014
Crutchfield Customer Review (What's this?)
 
These speakers are great they sound absolutely amazing. Fit perfectly in my truck!
Pros:
Sound and installation is great!
1 out of 1 people found this helpful
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5 out of 5

Awesome speakers

Written By Tim, Clearwater, SC on Sunday, June 08, 2014
Crutchfield Customer Review (What's this?)
 
I used these in a homemade soundboard I built for my jeep TJ. They were a perfect fit for this application...and look awesome as well... Very happy with these!
Pros:
Great sound , weather resistant materials , great for hooking up amped or un-amped.. Grills look great !!
Cons:
Don't have anything negative to say about them.
1 out of 1 people found this helpful
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5 out of 5

Polk Audio DXi691 Speakers

Written By Harley Harrold, Meridian, MS on Tuesday, June 03, 2014
Crutchfield Customer Review (What's this?)
 
I installed a pair of these speakers in the front doors of my 07' Dodge Ram 1500 Quad Cab truck to replace the original speakers. The difference in sound is way different, my music is fantastic now.
Pros:
Easy to install, direct replacement fit.
Cons:
None
2 out of 2 people found this helpful
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5 out of 5

Great sound

Written By Anonymous, Louisiana on Wednesday, April 30, 2014
Crutchfield Customer Review (What's this?)
 
Clean clear sound worth every cent.
1 out of 1 people found this helpful
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5 out of 5

Perfect upgrade from stock speakers!

Written By MiLo, Chicago, IL on Monday, March 10, 2014
Crutchfield Customer Review (What's this?)
 
(1st off let me just say, If you're looking for bass that will blow your ear drums out go buy an Amp and some Subs. These will not do it all by themselves.) - Testing for review. Bought these in the beginning of Feb, its now Mid March. Doing great so far. I Think I broke them in enough already. In my '04 Olds Alero I was looking to upgrade from stock speakers because mine blew out a couple months ago. I was doing the shop-around for quite some time. Then I found these. These 3-ways are phenomenal for the price at Crutchfield. These are a really great choice because of the clarity at any volume. Mind you, I've only tried these with my aftermarket stereo system (JVC KWHDR720). These bring the highs in nicely (you can hear things that you never heard before), the mids are solid (the clarity doesn't get better than these) and the lows are great (considering I don't have subs), if you have and equalizer like I do then you can definitely make these sound the way you want them to. I still get people looking my way. You don't know what you're missing until you get a nice 3-way. ***** Must get the DXi461p***** compliments these well
Pros:
- with the provided harness, these are a breeze to install. no cutting/stripping wires, no soldering. Just unclip stock speakers, attach harness and clip on the new speakers. BOOM! - perfect fit, no need for modification - no subs, no rattling, no problem. - nice clean all around sound
Cons:
In "my car" it's a PITA to get at the rear deck other than that I CAN'T THINK OF ANY!!!! LEARNED FROM EXPERIENCE, don't raise the volume up all the way until you break in new speakers for a couple weeks (especially if you live in the bitter cold ***northern/midwest states***) you will blow your nice brand new speakers
6 out of 6 people found this helpful
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5 out of 5

Polk dxi691

Written By Anonymous, Boyne City, MI on Saturday, February 15, 2014
Crutchfield Customer Review (What's this?)
 
Great speakers. Great value. Really woke up my Alpine system.
Pros:
Great sounding speakers.
2 out of 2 people found this helpful
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5 out of 5

Amazing!

Written By Geckobros, Colorado on Tuesday, January 28, 2014
Crutchfield Customer Review (What's this?)
 
These are some of the best sounding speakers I have ever installed. Great frequency response and very clear. I am also amazed at the price. Be sure to pair this with an amp. I paired it with Alpine MRP-F300 bridged, and couldn't be happier. I have not listened to them without the amp so I cannot comment on that.
1 out of 1 people found this helpful
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5 out of 5

Polk Audio DXi691

Written By JeffK, Grand Rapids, MI on Tuesday, December 03, 2013
Crutchfield Customer Review (What's this?)
 
I purchased these for my son's car, just turned 16, and they are worth every penny. They are hooked up to an after market Kenwood radio and a 125W x 2 pioneer amp ($200/$100...nothing real high end). The sound is crisp and the speakers are capable of handling any type of music. If you are looking for low, booming base then these are not for you, but if you want great sound, clarity and hard hitting base....perfect speaker. My son listens to Dubstep and he loves these speakers. Honestly, I can handle listening to dubstep through these as well. Crutchfield advisors were dead on in recommending our set up.
Pros:
Crisp, distinct sound. Sound great at any volume level
Cons:
None that I can think of
2 out of 2 people found this helpful
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5 out of 5

Good speakers upgrade for 2002 Dodge Ram 1500

Written By ErikM, Sacramento, CA on Monday, November 04, 2013
Crutchfield Customer Review (What's this?)
 
What can I say but these are a good upgrade for the stock door speakers. Clean sound and good bass.
Pros:
Clean sound Good bass
Cons:
None
5 out of 5 people found this helpful
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5 out of 5

Polk Audio

Written By PeteN, Sacramento, CA on Monday, October 21, 2013
Crutchfield Customer Review (What's this?)
 
Excellent value and sound. They fit perfectly out of the box. The instructions were very clear. Crutchfield also supplied all the adapter cables which made installation very simple.
Pros:
Easy to install, sounds great
Cons:
None noted
2 out of 2 people found this helpful
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5 out of 5

Awesome sound and clarity!

Written By Sean, Chicago Illinois on Monday, October 14, 2013
 
I'd have paid twice the price for these speakers had I known they sounded this good! Incredible power and clarity. Worth every penny!!
Pros:
Clarity and power
Cons:
Weight...but then magnet weight is a good thing!
2 out of 2 people found this helpful
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5 out of 5

Polk Audio DXi691

Written By Anonymous, portage,mi. on Sunday, October 13, 2013
Crutchfield Customer Review (What's this?)
 
super bass response
2 out of 2 people found this helpful
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5 out of 5

Polk car audio

Written By Tom, Westport, IN on Sunday, October 06, 2013
Crutchfield Customer Review (What's this?)
 
Sound and look great in my '04 Dodge Ram 3500 QC, w/ CTD.
Pros:
Not the Infinity paper cones that they replaced.
Cons:
Original factory mounting points were not used except for one hole, had to drill two new holes
2 out of 2 people found this helpful
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5 out of 5

good quality

Written By bring the boom, galt Calif on Sunday, October 06, 2013
Crutchfield Customer Review (What's this?)
 
Good quality. Needs an amp.
Pros:
Good quality
Cons:
Needs an amp
2 out of 2 people found this helpful
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5 out of 5

Polk Audio DXi691

Written By PlanetKiller, Aloha, Oregon on Tuesday, August 20, 2013
Crutchfield Customer Review (What's this?)
 
I installed these in the front doors of my 2006 Ram2500. Fit nicely with the provided spacers. Very nice sound. Really surprising when compared side by side with the stock ones, both looks and sound. The hide behind the factory door panels and everything looks stock and clean. I am running the Alpine KTP-445 amp and it really woke them up!
Pros:
Good bass, good fit, nice sound overall.
Cons:
None really.
4 out of 4 people found this helpful
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5 out of 5

Speaker DXi691

Written By Stan H, Amarillo, Texas on Sunday, August 18, 2013
Crutchfield Customer Review (What's this?)
 
Excellent speakers. Didn't know what I was missing out on until I upgraded to these speakers.
Pros:
Ease of installation
Cons:
None
2 out of 2 people found this helpful
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5 out of 5

Polk Audio DXi691 6x9's

Written By Jay, Albuquerque, NM on Saturday, August 03, 2013
Crutchfield Customer Review (What's this?)
 
I wanted to replace the stock front door speakers in my 2006 2500 Dodge Ram Mega Cab. These were recommended as a good fit from Crutchfield. I was torn between component's and these. I haven't had 6x9's since I was a kid, so I was a bit skeptical. But I am really impressed with these speakers. The install was straight forward. But they do fit a little awkward in the doors. The magnet is so much larger than stock I was afraid it would hit the glass but it does fit without issue. Once installed and door panels back on cranked it up. The sounds was far better than stock. Much better sounding high's and mid's. The bass from them is also ok, but we all know 6x9's aren't pass monsters. But overall these speakers to an excellent job with all the music I listen to from metal, rock and roll to an occasional rap venture. I would definitely recommend.
Pros:
Great high's and mid's.
Cons:
Bass is lacking but they are 6x9's
6 out of 6 people found this helpful
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5 out of 5

So far, so good

Written By Fred, Seabeck on Friday, July 19, 2013
Crutchfield Customer Review (What's this?)
 
I pulled the engine of my car so during the down time I replaced the 33 year old speakers. (it was time, trust me) The new ones sound great but sitting in the garage with the battery charger hooked up is not a proper test. The real test will be if they can be heard while I'm at the strip drag racing,,,,,,,
1 out of 6 people found this helpful
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1 question already asked

What about impedance mismatch? I have been told that the original speakers with the Monsoon system are 2 ohms. [ John  Dec 07, 2013 ]
1 answer
  • Thanks for your question. Definitely reach out to an Advisor for a quick online chat or phone call. They'll be able to check on your vehicle specifically and make sure these speakers will work. [ Jeff Staff  Dec 07, 2013 ]

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Reduce ambient road noise and your vehicle's "rattles," for better sound inside your car. See all categories & accessories

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For a more in-depth review and enhanced detailed information on the Polk Audio DXi691, please visit the Crutchfield website product page (/ISEO-rccbcspd/p_107DXI691/Polk-Audio-DXi691.html ).