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Polk Audio DXi571

5"x7"/6"x8" 2-way car speakers

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Our take on the Polk Audio DXi571

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 DXi571 speakers feature 5"x7" 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 DXi 571

Aluminum dome tweeters broadcast detailed sound

Each 3/4" aluminum dome tweeter brings out the high-frequency highlights in your music, so you'll hear every detail of your most enthralling musical moments. 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:

  • 2-way car speakers (pair) for 5"x7" and 6"x8" openings
  • polymer composite woofer with butyl rubber surround
  • 3/4" aluminum dome tweeter
  • power range: 2-60 watts RMS (180 watts peak power)
  • frequency response: 52-22,000 Hz
  • sensitivity: 93 dB
  • top-mount depth: 2-3/16"
  • 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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2-way
Tweeter Design
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3/4" Dome
Tweeter Composition
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Aluminum
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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52 - 22k Hz
RMS Power Range (Watts)
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2-60
Peak Power Handling (Watts)
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180
Impedance (Ohms)
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4
Top-mount Depth (Inches)
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2 3/16
Bottom-mount Depth (Inches)
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2 3/4
Product Research
What's in the box?

Download owner's manual

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

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.

Aluminum Dome Tweeters: Each speaker features a 3/4" aluminum dome tweeter for clear, accurate highs.

 
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Polk Audio DXi571 Reviews

Average Customer Review:

25 people say:

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5 out of 5

Baby's siinging a little sweeter now!

Written By Sal, Long Island, NY on Wednesday, July 30, 2014
Crutchfield Customer Review (What's this?)
 
Just installed a pair of Polk DXi571s in the back-of-the-seat location of my 2002 Ford Thunderbird. Nice compliment to a newly installed Pioneer AVH-X5600BHS head unit. Installation was fairly straight forward and made much easier with Crutchfield's Ford wiring harness adapter. Huge improvement over the factory speakers. Excellent midrange and highs. Very acceptable bass tones, especially from a rear forward facing speaker system. Very efficient speakers, and a lot of bang for the buck.
Pros:
Simple installation into existing factory speaker system mounts. Terrific performance of mid and high range tones, very respectable bass performance. Overall, an excellent replacement for factory stock speakers, without braking the bank.
Cons:
Nothing I've seen.
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2 out of 5

Polk Audio DXi571 Speakers

Written By CQLink, Detroit on Wednesday, July 23, 2014
Crutchfield Customer Review (What's this?)
 
"Muddy" is the best word to describe the sound of these speakers. Before and after installing an Alpine KTP-445U Head Unit Power Pack these speakers sounded bad. Very disappointed. I've used Polk in numerous home theater applications and once in a truck stereo install. The Polks didn't sound good in the truck and I'm not sure why I thought they would sound any better in my car. Pass up even with a price drop. You can find better speakers in the $40-$50 range.
Pros:
None.
Cons:
Terrible bass response. Speakers sound dull and muddy. The clips Polk provides to mount the speakers into existing places in your door are worthless. Had to modify to install.
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4 out of 5

polk audio 5x8 speaker

Written By Ted, Glassport, Pa on Sunday, July 20, 2014
Crutchfield Customer Review (What's this?)
 
very good upgrade to stock speakers. took advice from salesperson to find these.
Pros:
easy install, exact fit, harness plugs fit perfect. only about 15 minutes per door to install
Cons:
none
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5 out of 5

Great upgrade

Written By JoshW, Indiana on Friday, July 18, 2014
Crutchfield Customer Review (What's this?)
 
These are some very good speakers. I replaced all 4 oem speakers in my ranger with these and I'm very pleased. The low bass is very respectable, but mid bass, like kick drums, sound awesome. I listen to rap all the way through to metal, and these shine on rock and metal. I think these will be very sufficient for rap once I put an amp on them. Absolutely no buyers remorse
Pros:
Double bass for days
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4 out of 5

Upgrade for a 1994 F150

Written By Adam, Chesapeake, VA on Sunday, July 13, 2014
Crutchfield Customer Review (What's this?)
 
Replaced a pair of blown MTX speakers in my 94 F150. It's a tight fit for just about any speaker, but I used a few washers to angle the magnet a bit for a better fit. Sound is great, very clear with a good midrange. Don't expect much in the low end department, but that's true with most speakers.
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5 out of 5

Speakers

Written By John, Oklahoma on Friday, June 20, 2014
Crutchfield Customer Review (What's this?)
 
Sounds way better then stock. You can here evey thing more clear
Pros:
Cleaner clear sound
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5 out of 5

polk

Written By indy018, la crosse wi on Sunday, June 15, 2014
Crutchfield Customer Review (What's this?)
 
Was looking Fo a upgrade and read a lot of reviews. Finally chose the polk for front and rear and couldn't be happier. Sound great and a improvment over the shaker 500.
Pros:
Sound great and Crystal clear
Cons:
Had to cut some of the casing off to get them in a 06 mustang front and rear
1 out of 1 people found this helpful
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5 out of 5

A truly incredible improvement. ...

Written By Anonymous, Fairbanks, Alaska on Friday, June 13, 2014
 
Wow, what an improvement, installation was extremely easy, especially with Crutchfield provided wiring adapters. Do yourself a favor and buy these, you won't believe what you will hear. I can't say enough about Crutchfield support, they will help you for car stereo needs.
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4 out of 5

Good Sound, Installation instructions could use some work!

Written By Dan G., Carleton, Michigan on Friday, June 06, 2014
Crutchfield Customer Review (What's this?)
 
The speakers sound great and are a significant improvement over factory installed. Installation instructions do not tell you the "gasket" is not to be used. The holes in the speakers DO NOT align with all 3 OEM installation holes. You will have to drill your own new one or two depending on your retention desire. For me, 2 lined up, 1 did not. I ended up using 4 holes to secure the speakers since I wanted to ensure there were no rattles.
Pros:
Great Sound
Cons:
Installation instructions insufficient.
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5 out of 5

Great Sound For The Money

Written By momule, Rural Eastern Mo. on Friday, May 30, 2014
Crutchfield Customer Review (What's this?)
 
At this price point ($75) this is an excellent product. Perfect as a modest upgrade for OE speakers. In my Ranger I added sound insulation in the doors to prevent rattles in door when windows were open but that's a truck issue and not a fault of the speakers. I am driving 4 of these with a Blaupunkt Adelaide 130 Media Player and I am very pleased. It could use a sub for more "thump" but I am not needing that myself. Some report this speaker as being too bright but both the kind of music I enjoy and my 60 year old ears are happy with what I have.
Pros:
VERY good upgrade from factory equipment and a well made speaker. Polk makes good stuff.
Cons:
Could use a sub so that cone could be limited to what it really does very well: midrange. If you need to be thumped in the chest by your tunes either look elsewhere or add a sub
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4 out of 5

Fantastic Speakers!

Written By Jason, Aiea, HI on Saturday, May 03, 2014
Crutchfield Customer Review (What's this?)
 
Easy installation in my 2007 Ford Explorer and great sound quality for the price. Can't beat Crutchfield support and shipping. Hands down the best.
Pros:
Price
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5 out of 5

Speaker Upgrade 1999 Ford Explorer XLT

Written By Jack K, Philadelphia, PA on Tuesday, April 29, 2014
Crutchfield Customer Review (What's this?)
 
I had heard that the speaker upgrade to the sound system was the easiest place to start. There was nothing wrong with my stock speakers, but I changed out all 4. The sound quality is AMAZING! I listen to most of my music through the IPOD or IPHONE, but even when it is the radio it sounds great. It took about 90 minutes to do all 4 speakers. Well worth the time and the money. The instructions were straight forward and easy. On my next used vehicle purchase, I will use Crutchfield and upgrade the sound system ASAP, the quality is far superior to stock.
Pros:
Great Sound quality through all ranges, I wished I had done it sooner.
Cons:
NONE
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5 out of 5

great sound

Written By 337me, Phoenix, AZ on Wednesday, April 23, 2014
Crutchfield Customer Review (What's this?)
 
Birthday present for my daughter. Great sound! Highly recommended.
Pros:
Easy installed. Crutchfield supplied everything needed
Cons:
None
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5 out of 5

Love these speakers

Written By Anonymous, Toledo, OH on Saturday, March 22, 2014
Crutchfield Customer Review (What's this?)
 
Great price, GREAT sound.
Pros:
I absolutely love these speakers. Clear, crisp highs, surprising bass for a 5 X 7.
Cons:
None.
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5 out of 5

Polk Audio DXi571

Written By Anonymous, New Cumberland, PA on Monday, March 17, 2014
Crutchfield Customer Review (What's this?)
 
Great sounding speakers. Glad i went with them.
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5 out of 5

Polk DXi571

Written By Harry, Rocky Point, NC on Tuesday, March 11, 2014
Crutchfield Customer Review (What's this?)
 
These work really well for the money
Pros:
Price and performance
Cons:
None
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5 out of 5

Perfect fit and sound

Written By Chris, Atlanta, GA on Wednesday, February 26, 2014
Crutchfield Customer Review (What's this?)
 
Perfect fit and great sound quality!
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5 out of 5

Speakers are very respcetable

Written By Noid 1037, Tulsa, OK on Monday, February 10, 2014
Crutchfield Customer Review (What's this?)
 
I purchased these speakers for a 2012 Ford F-150 XLT Supercrew. They were installed on the front doors. The factory passenger side speaker had stopped working-blown! They went right and no problems getting them installed. They sound better for sure than the Ford factory and I am likely going to replace the rear door speakers in the very near future!
Pros:
Easy connection, same size as the factory - no mods needed. Nice sound and nice look.
Cons:
not much
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5 out of 5

Happy !!

Written By 330turbo, Sarasota, Fl on Friday, February 07, 2014
Crutchfield Customer Review (What's this?)
 
sounds clean and holds good base sound, and takes the abuse very well !
Pros:
Is a Polk !!!
Cons:
I don't know any yet !
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3 out of 5

Polk Audio DXi571

Written By Brian, Charlottesville Va. on Friday, January 10, 2014
 
Sound fair to me not enough low end . No speaker grills but for the buck not a bad deal.
Pros:
price
Cons:
No speaker grills
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4 out of 5

Polk Audio DXi571

Written By Anonymous, Powell, WY on Monday, December 02, 2013
Crutchfield Customer Review (What's this?)
 
To be honest, I did not like them at all to begin with as they were quieter and less bass than the stock unit. Figured out that the baffle was killing them, I was not aware that the baffle needed to be cut out. After reading some posts about them, I ended up removing the baffle and now they sound much, much better. Was hoping for a bit more bass, but great clarity, so overall, happy with them now.
Pros:
Very good clarity.
Cons:
Could have a little better bass.
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3 out of 5

polk speakers

Written By Anonymous, Cranston ri on Friday, September 13, 2013
Crutchfield Customer Review (What's this?)
 
These speakers sound way better than stock but they crack and distort a bit. I like it loud in my car and so far to keep the speakers from cracking I haven't been able to put them as loud as I'd like and I have to keep the bass at zero along with mid's and tremble. I have these in the rear of my mustang.
Pros:
Better than stock
Cons:
Crack and distort with any bass at all
1 out of 1 people found this helpful
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4 out of 5

Great Sound Mid Level Speaker

Written By B, South Florida on Saturday, August 31, 2013
Crutchfield Customer Review (What's this?)
 
Great sound for what I would consider a mid level speaker. Covers a wider range of sound than most speakers in the same price range. I bought 4 for all the doors and as of now have them hooked to a factory head unit and its already a noticeable step up. As soon as I get a new head unit I know they will be even more refined.
Pros:
Price, wide range of sound. Easy to install in factory openings.
Cons:
If you are looking for a high end speaker look at a different model but this is more than suitable for a mid level Or factory upgrade.
1 out of 1 people found this helpful
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2 out of 5

Polk Audio DXi571

Written By bassgod, san francisco, ca on Wednesday, July 31, 2013
Crutchfield Customer Review (What's this?)
 
These speakers hit well on the bassline and are decently priced. i would recommend these to someone who wants a nice pair for a decent price. Although the tweeters are not the best.
Pros:
Bass sounds great Decently Priced
Cons:
Tweeters could use some upgrading
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1 out of 5

Very hard on the ears

Written By msw1, Glendale, Az on Sunday, July 14, 2013
Crutchfield Customer Review (What's this?)
 
Purchased these for a 1999 Ford Expedition. The fit was perfect front and rear. They have a decent amount of bass for their size. Unfortunately, the tweeters on these speakers are awful. My adviser did tell me they were bright, but that is not the appropriate description for these. They are extremely harsh and gave both my wife and myself headaches after listening to them. My ears physically hurt after just 10-15 minutes at a moderate volume. I strongly do not recommend these speakers unless you enjoy an extremely bright, irritating tweeter.
Pros:
Perfect fit. Decent bass.
Cons:
The harshest tweeters I have ever experienced.
4 out of 5 people found this helpful
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For a more in-depth review and enhanced detailed information on the Polk Audio DXi571, please visit the Crutchfield website product page (/ISEO-rccbcspd/p_107DXI571/Polk-Audio-DXi571.html ).