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Polk Audio DXi400

4" 2-way speakers

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  • Polk Audio DXi400

Item #: 107DXI400
 

Review Summary

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Our take on the Polk Audio DXi400

by Jo Greene
Polk Audio

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 DXi400 speakers feature 4" polymer/mica 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.

Silk/polymer dome tweeters broadcast sweet sound
Rest assured, you'll hear every detail of your most enthralling musical moments. Each 3/4" silk/polymer dome tweeter brings out the high-frequency highlights in your music, and a proprietary magnetic liquid cools each tweeter so you'll get clear sound and excellent long-term performance. From an intensely quiet acoustic pluck to the most exhilarating electric solo, it'll be a very entertaining ride.

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Highlights:

  • 4" 2-way car speakers (pair)
  • polymer/mica composite woofer with butyl rubber surround
  • 3/4" liquid-cooled silk/polymer composite dome tweeter
  • Neodymium tweeter magnet
  • built-in 2-way crossover network
  • power range: 2-45 watts RMS (135 watts peak power)
  • frequency response: 85-22,000 Hz
  • sensitivity: 91 dB
  • top-mount depth: 1-7/8"
  • 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 2-way
Tweeter Design 0.75" Dome
Tweeter Composition Silk
Woofer Composition Polymer/Mica Composite
Woofer Surround Rubber
Parts Warranty 1 Year
Labor Warranty 1 Year
Specifications
Sensitivity 91 dB at 1 watt
Frequency Response 85 - 22k Hz
RMS Power Range (Watts) 2-45
Peak Power Handling (Watts) 135
Impedance (Ohms) 4
Top-mount Depth (Inches) 1 3/4
Bottom-mount Depth (Inches) 2
Cutout Diameter or Length (inches) 3 11/16
Product Research
What's in the box?

Download owner's manual

  • Two 4" Two-way speakers
  • 2 Grilles
  • Eight 1" Self-tapping screws
  • 8 Speed clips
  • Owner's Manual (English/ Spanish/ French/ German/ Italian/ Portuguese)
  • Online 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 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 Polk DXi 400 speaker features a Dynamic Balance, polymer/mica composite cone woofer. These composite cones feature tremendous stiffness-to mass ratio. Lower mass means faster transients and finer detail.

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

Silk Dome Tweeters: Each Polk DXi 400 speaker features a 3/4" silk dome tweeter for clear, accurate highs. The tweeters use a light-weight neodymium magnet for higher efficiency.

 
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Polk Audio DXi400 Reviews

Average Customer Review:

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Filter by rating:
5 out of 5

Great Jeep TJ speakers for the price!

Written By Brian G, Waconia, MN on Thursday, October 03, 2013
Crutchfield Customer Review (What's this?)
 
I bought these speakers to replace the factory dash speakers in my '97 TJ. They don't have a lot of bass but you don't buy 4" speakers for bass. The clarity is great and there is noticeable separation in the sound now...I would highly recommend these speakers and plan on replacing the the sound bar speakers in the near future with some more Polk speakers. Very satisfied with my purchase and of course Crutchfield sent all the brackets and connectors needed to make this a fast and simple installation!
Pros:
Great sound clarity and separation, awesome price!
Cons:
none
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5 out of 5

Great Factory Upgrade

Written By Anonymous, San Diego, CA on Thursday, September 26, 2013
Crutchfield Customer Review (What's this?)
 
Used these to replace a set of factory speakers. At the time of purchase I was worried about their ability to produce bass. I thought I would get good high and mid range sound due to their size. I was very pleased when I first turned them on because they put out some good bass. These speakers put out good sound in all ranges.
1 out of 1 people found this helpful
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4 out of 5

Great front door speakers

Written By A Guy With A Toyota, Santa Monica, CA on Saturday, September 14, 2013
Crutchfield Customer Review (What's this?)
 
Great sounding front door speakers. Not crazy amounts of good bass, but they work in perfect complement with some 5" speakers in my back door. Every easy to install.
Pros:
Good sound. Easy to install. Low price.
Cons:
Better with treble and mid-range than bass.
1 out of 1 people found this helpful
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3 out of 5

polk audio dxi400

Written By mg in nm, albuquerque nm on Thursday, September 12, 2013
Crutchfield Customer Review (What's this?)
 
good little speakers. a lot better than the stock ones
Pros:
decent sound, easy install
Cons:
the stock jeep speakers had a square cover and the polk's are round. they would not cover where the upholstery was cut out for the old speakers. so i had to use the old speaker covers on the new speakers. too bad especially when they claim these are a replacement for the jeep original speakers.
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5 out of 5

Great speakers!

Written By P, San Diego on Tuesday, September 03, 2013
Crutchfield Customer Review (What's this?)
 
These little speakers work great! Perfect for the stock locations in my 1990 Toyota truck dash! Installed a Alpine MRP-F300 and a pair of Polk DB651's in the back. System sounds great!
Pros:
Big sound for the size.
Cons:
None yet
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5 out of 5

Polk DXi400

Written By Anthony, California on Monday, August 26, 2013
Crutchfield Customer Review (What's this?)
 
These speakers sound very good, especially for the price. The mids and highs are very clean sounding. The treble is not harsh at all, which is something that is a problem for me with a lot of other speakers. Obviously there is no bass because they are only 4". I found I can amplify the mid-bass by putting them in a custom sealed box with polyfill, but it is better to mount them in the dash with larger speakers in the rear for the bass. They sound fine off an aftermarket headunit (have not tried them with a stock headunit) and have plenty of volume. They sound even better with an amp and a crossover to block the bass, especially at high volume levels.
Pros:
Excellent mids Highs are not harsh
Cons:
None
1 out of 1 people found this helpful
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5 out of 5

Polk Audio DXi400

Written By Anonymous, Hawaii on Monday, August 26, 2013
Crutchfield Customer Review (What's this?)
 
Great speakers!
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4 out of 5

Polk DXi400

Written By onemat, Ashland City, TN on Thursday, August 22, 2013
Crutchfield Customer Review (What's this?)
 
Pretty nice sound for a 4" and seems pretty efficient. Mounted in existing door card holes. The tweeter mount is high quality.
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5 out of 5

The polks!

Written By Tyler, SoMD on Thursday, August 22, 2013
Crutchfield Customer Review (What's this?)
 
I think these speakers have great sound. Awesome mids and amazing highs, match up well with my Bose in the back, they don't have barely any bass, but you don't buy a 4" for bass... That's just dumb. They're not made for a bunch of bass but if you want bass check out the bass link. Anyway it was a simple screw on install and took like 10 min in my 94 geo prizm, I didn't have to take the whole door panel off, just the grill. I don't have an external amp running to them and they still sound good, they would probably sound better with an amp and a good crossover. Got them the day after I ordered, crutch field is pretty awesome.
Pros:
Great sound easy install look pretty good.
Cons:
No bass but nor really a con considering they're a 4" speaker. I didn't expect any bass I'm just sayin.
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4 out of 5

Pffft. 4" Speakers ... But wait.

Written By JaveS, Wisconsin on Wednesday, August 21, 2013
Crutchfield Customer Review (What's this?)
 
I cant give these four stars, as much as I want to. They are so small. I would highly suggest finding some way to fit a bigger speaker.

That being said. I coupled these mosquito bites with my Clarion CX501 and Polk db651s speakers in order to replace the cheap stock Subaru speakers. They are small, so I coupled them with baffles to keep the door panel from leeching so much sound from them. They are a major improvement from stock, but definitely not 6x9's. Thay are cheap, they are quality, they sound quite good. Satisfied with purchase, even though I am sad I didn't try to custom fit 5.25's or 6.5's.
Pros:
Cheap, quality, sound good.
Cons:
Small speaker, small, small, small.
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5 out of 5

great sound

Written By KD, Waco, TX on Monday, August 19, 2013
Crutchfield Customer Review (What's this?)
 
We got these on sale, great sound from a small speaker, they match up good with the new Kenwood deck.
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5 out of 5

Love 'em

Written By Nick, New London Ct on Thursday, August 08, 2013
Crutchfield Customer Review (What's this?)
 
Ordered these to replace my stock rear deck speakers, which were a sorry excuse for speakers.... Install was easy and they sound great, they have decent base for 4" speakers.. No complaints,, speakers are worth the price
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5 out of 5

Polk Audio DXi400

Written By tntom, Bonnaroo on Wednesday, August 07, 2013
Crutchfield Customer Review (What's this?)
 
Excellent value, decent sound for 4".
Pros:
Quality construction, lifetime support, free n quick shipping, 55% off!!!
Cons:
??
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5 out of 5

Vanagon Stock size speaker

Written By Paul N, Indian Orchard, MA on Sunday, August 04, 2013
Crutchfield Customer Review (What's this?)
 
Great crisp clean speaker. Bass is ok, but A powered subwoofer will fill in. Went to the drive in and it was enough. Can't wait to hear with a sub.
Pros:
Perfect fit
Cons:
Not a lot of bass, but wouldn't expect it from 4 inch speakers.
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4 out of 5

Great inexpensive replacement option for second gen. 4runner.

Written By Fireballsocal, California on Tuesday, July 30, 2013
Crutchfield Customer Review (What's this?)
 
A pair of these polks replaced my 22 year old stockers in the dash of my 1991 4runner. They fit almost perfectly and didn't need the wiring harness crutchfield sent along. The screw holes are maybe 1/16th inch too narrow for a perfect fit. I was able to insert the screws at an angle and they tightened up just fine. Using a rat tail or chainsaw blade file to slightly enlarge the slot opening on the speaker will provide the necessary space for a perfect fit. The sound is ok with the stock head unit. Nothing to rave about but then again, nothing to complain about. Just a good solid option for stock replacement speakers. They sound loads better then the dry rotted stockers.
Pros:
Inexpensive, almost perfect fit, comparable, if not slightly better sound than the stock speakers.
Cons:
None at this price point.
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5 out of 5

Great All-around

Written By DJ, Northfield, VT on Monday, July 29, 2013
Crutchfield Customer Review (What's this?)
 
This was a very good experience all-around. Easy to find in the online catalogue, great price, fast shipping, fast installation (wire connection kit...a very pleasant surprise), and last but not least---Great sound coming from the back; even the dogs like the sound.
Pros:
Easy installation and hook-up. Very good sound.
Cons:
Nothing contrary here
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4 out of 5

Exact Fit

Written By dcrio, Royersford, PA on Wednesday, July 24, 2013
Crutchfield Customer Review (What's this?)
 
Exact fit for my front OEM speakers. Original speakers were 25 years old and dry rotted. Needless to say, these are quite an improvement. That said, it's hard to get great sound out of such small speakers. Very good but not great sound. That's not slap at Polk or Crutchfield, just physics.
Pros:
exact fit
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5 out of 5

Polk Audio DXi400

Written By Anonymous, grover beach, CA on Sunday, June 30, 2013
Crutchfield Customer Review (What's this?)
 
Easy install. Great sound. Clear highs and nice punchy lows. Excellent addition to my 6 inch front speakers. My Westfalia is full of sound now!
Pros:
Easy install. Nice all around sound.
Cons:
None
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4 out of 5

Good little speakers

Written By MarkB, Mandan, ND on Friday, June 28, 2013
Crutchfield Customer Review (What's this?)
 
Needed some speakers to replace the blown ones in my 92 buick regal, and these were the right price and had good reviews. The sound quality is quite good for a 4" speaker, but I think they would sound best with an amp or at least a filter since they don't handle lows very well and I'm not running a sub. overall I'm satisfied with them.
Pros:
super clear mids and highs, price, comes with grilles
Cons:
obviously bass response is an issue with small speakers.
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5 out of 5

Highly recommened

Written By HC, San Francisco on Monday, June 24, 2013
Crutchfield Customer Review (What's this?)
 
Bought these speakers because of my positive experience with Dxi650s; these were to replace the factory speakers in my older Range Rover - these fit exactly, were easy to install (had to change a couple of connectors), and once in place, the improvement in sound quality was immediately noticeable - sound acquired a very nice depth to it
Pros:
great sounds for the size
Cons:
haven't discover any yet
1 out of 1 people found this helpful
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5 out of 5

Pretty darn awesome!

Written By A. P., Chicago, IL on Sunday, June 23, 2013
Crutchfield Customer Review (What's this?)
 
While other people might complain about these not making too much bass I am not a moron. They do what they are meant to do; make some amazing treble and make some amazing mids. I only have a Pioneer amp powering them right now and I love them.
Pros:
Uber easy to install.
Cons:
Pretty sure this product is going to be discontinued even though it is so awesome.
1 out of 1 people found this helpful
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5 out of 5

Polk Audio DXi400

Written By Bob, Greenvile, NC on Monday, June 17, 2013
Crutchfield Customer Review (What's this?)
 
Great little speaker! I added these to the boat which I already had a pair of DXi525's. Not quite the bass as the 525 but rich clean sound. Easy install with 3 3/4" hole saw.
1 out of 1 people found this helpful
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1 out of 5

Polk speakers

Written By Jeremy, Columbus ohio on Sunday, June 16, 2013
Crutchfield Customer Review (What's this?)
 
Extremely poor speakers. Terrible sound. My factory speakers were much better.
1 out of 7 people found this helpful
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5 out of 5

Polk Audio DXi400 speakers

Written By kennyD, Fort Walton Beach FL on Saturday, June 15, 2013
Crutchfield Customer Review (What's this?)
 
Installed in the rear doors of my 2001 Nissan Frontier Crew Cab.Good quality. Sounds much better than the factory speakers.
Pros:
easy to install, good price.
Cons:
none
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5 out of 5

Polk Audio DXi400

Written By Anonymous, georgia on Friday, June 14, 2013
Crutchfield Customer Review (What's this?)
 
Incredible sound for 4" speakers
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5 out of 5

polk audio dxi400

Written By S. Silver, Tomball, Texas on Friday, June 14, 2013
Crutchfield Customer Review (What's this?)
 
I just received these Polk Audio speakers and installed them in my 1985 Kawasaki Voyager 1300 motorcycle today to go with a new JVC head unit I also installed. These replaced the OEM 4" speakers that originally came with the bike. These are very high quality, easy to install and most importantly sound awesome! There is no comparision between these and craptastic OEM basic speakers. They even fit (albeit tight) in the original Kawasaki speaker mounting covers so the look of the bike is unchanged. Even without an amp the sound is crisp, loud and they really will make for a better ride! Shipping was free and extremely fast!
Pros:
Excellent quality, great price, easy install, awesome sound and free shipping! All the best in one package!
Cons:
Had to purchase smaller female wire connectors at a local store in order to install but it was not a big deal. The old OEM speakers had larger male connection tabs than these new ones but it's all good!
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5 out of 5

Polk audio speakers

Written By Seth d., Lacey Washington on Thursday, June 13, 2013
Crutchfield Customer Review (What's this?)
 
This is my second pair of speakers I have bought from Crutchfield that were Polk audio and they rock just as good as the last pair. I would and will continue to buy Polk audio for all of my vehicles due to the quality and reasonable price!
Pros:
Price Quality of sound Easy to install
Cons:
Not a whole lot to complain about honestly
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5 out of 5

FOR YOUR INFORMATION

Written By CJSPEAKMAN, OCCIDENTAL, CA on Wednesday, June 12, 2013
Crutchfield Customer Review (What's this?)
 
Excellent happy with purchase, nice up-grade from stock unit, would recommend to a friend.
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5 out of 5

Polk DXi 400

Written By Gregg, Sarasota, FL on Sunday, June 02, 2013
Crutchfield Customer Review (What's this?)
 
Great sound for a "small" speaker. Can turn up the volume and the sound stays crisp.
Pros:
Great sound, great price.
Cons:
None
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5 out of 5

Perfect for my soft top TJ

Written By KevinW, San Diego on Thursday, May 30, 2013
Crutchfield Customer Review (What's this?)
 
Arrived quickly and installed with ease. The sound and clarity are far superior to the originals (which had over 100k miles on them). Highly recommend.
Pros:
Sound clarity and quality. Ease of installation.
Cons:
none
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4 out of 5

Polk Audio DXi400

Written By jporiginal, Atlanta GA on Monday, May 27, 2013
Crutchfield Customer Review (What's this?)
 
I installed these speakers in my Jeep Wrangler to replace the stockies in the dash. Speakers are very crisp and give a really detailed sound quality. I mixed these with a pair of the DXi525 5.25" components in the overhead sound bar. They match great. After I got everything dialed in with the head unit, there's no obvious difference between the two. Just a focused auidio image. I'm not sure how they handle low end on their own, as I have a 8" Bazooka tube for all the low end. But, when I crank everything up there's no distortion and loud enough even with the top and doors off.
Pros:
Easy factory replacement with included/added adaptor plates and wiring harnesses. Clarity. Economic value.
Cons:
Mounting these speakers to the plate was a little curious. I used the included screws and metal clips. It was a little tricky getting the screws to tighten up but it managed to all tighten up well.
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5 out of 5

Awesome speakers

Written By Darrell, Charlotte, NC on Friday, May 24, 2013
Crutchfield Customer Review (What's this?)
 
I had purchased a pair of speakers years ago and when I deciced to upgrade with an amp and sub I looked at new in-dash speakers. These speakers fit well and were very easy to install. The best part the sound is incredible. The music in my truck has never sound so good.
Pros:
Everything
Cons:
None so far.
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5 out of 5

Polk Audio DXi400 speakers

Written By Boneyard, Wadsworth, OH on Wednesday, May 22, 2013
Crutchfield Customer Review (What's this?)
 
Very nice detail from these speakers....
Pros:
Very nice quality
Cons:
None
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5 out of 5

Dynamic sound

Written By Schrek, Greensboro, NC on Monday, May 20, 2013
Crutchfield Customer Review (What's this?)
 
The sound quality and range of these speakers is much better than I expected from their 4" size. The mid-range bass really impresses me. They also work great in combination with the JVC KD-AHD69 head unit, with no amplifier. The quality of the material seems to be really good, and the screen covers look like they'll stand up well.
Pros:
Sound quality Easily driven Quality materials
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5 out of 5

Good value

Written By MrWombat, Seattle, WA on Monday, May 20, 2013
Crutchfield Customer Review (What's this?)
 
no complaints, works as advertised
Pros:
good value for the price paid
Cons:
be warned that the tweeter does stick out a bit from flush, so it could be an issue trying to fit them behind existing grills.
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4 out of 5

Polk Audio DXi400

Written By Engobo, San Diego, CA on Saturday, May 18, 2013
Crutchfield Customer Review (What's this?)
 
For the price, great upgrade, definitely a marked difference from the factory units.
Pros:
Easy to install, compact sizing and easy fit
Cons:
Unknown to me ..
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5 out of 5

Very happy with these

Written By H2O_Doc, Alexandria,VA on Wednesday, May 15, 2013
Crutchfield Customer Review (What's this?)
 
Excellent sound quality. Added nice fill to a system that had a low frequency bias. For the price paid, I can't think of a better value.
Pros:
Value Good sound quality Freq range for their size
Cons:
None.
1 out of 1 people found this helpful
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5 out of 5

Great Purchase

Written By JBC, Lexington, KY on Tuesday, May 14, 2013
Crutchfield Customer Review (What's this?)
 
I needed 2 sets of good sounding speakers for my truck and did not want to break the banks and that's what I got with the 2 pair of DXi400's I received. Crutchfield sales made the recommendation and it was great!!
Pros:
Good quality, great price!!
1 out of 1 people found this helpful
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5 out of 5

Great sound from such a small package

Written By A.J.F, United States on Tuesday, May 14, 2013
Crutchfield Customer Review (What's this?)
 
Great sound especially when connected to an external amp. Highs are beautiful at low and high volumes.
Pros:
Includes speaker grills
Cons:
None
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5 out of 5

Polk Audio DXi400

Written By Anonymous, Normandy, TN on Sunday, May 12, 2013
Crutchfield Customer Review (What's this?)
 
Speakers fit and sound good. The speakers do hit the factory speaker covers but they do still snap into place.
Pros:
Good speaker for the price
1 out of 1 people found this helpful
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5 out of 5

good speakers

Written By geneb, Guam on Friday, May 10, 2013
Crutchfield Customer Review (What's this?)
 
replacement for old car speakers, sounds really clear and full, would recommend it
Pros:
5
Cons:
non
1 out of 1 people found this helpful
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5 out of 5

Polk Audio DXi400

Written By t3ragtop, Columbus OH on Thursday, April 25, 2013
Crutchfield Customer Review (What's this?)
 
These 4" speakers are really very musical and, although they run out of breath in the mid-bass range, they really shine in the upper register. Highs aren't brittle and the mid-range to high frequency transition is very smooth. Sibilance is very well controlled and there is no noticeable smearing of the sound stage with the coaxial speaker design. For the price, these are super performers.
Pros:
Easy installation with 4x6 inch adapter plates and wiring adapters included by Crutchfield at no additional expense. Nicely packed with sedately styled grilles. Materials and construction are very good. The magnet structures and frames are nicely done.
Cons:
In a small car with no room for larger speakers, I had to use what would fit. It's no fault of the speakers, but they are short on output in the mid-bass range and really don't produce any useable output below 100 to 125 hz.
1 out of 1 people found this helpful
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4 out of 5

great value speaker

Written By walt, United States on Monday, April 22, 2013
Crutchfield Customer Review (What's this?)
 
nice speaker for the money, and recommend crutchfield to my friends,,
Pros:
cheap price
Cons:
none
1 out of 1 people found this helpful
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5 out of 5

Perfect Match for the Price

Written By Steven, Charleston, WV on Monday, April 01, 2013
Crutchfield Customer Review (What's this?)
 
I wanted to change out my factory system and speakers on my 97 Jeep Wrangler. Lets face it basically driving around in a tent. Based on the advice of the rep. I went with Kenwood KMM-100u Media Receiver and the Polk Audio DXi 400's and 525. I am writing one review for all three products at once.

I did the install by myself (with a couple of call into the tech line to make sure I was not going to far off base. Word of advice get the install kit. It is a wise investment. The overall installation I spent another $30 but that due to the wiring mess I found once I took the receiver out and had to some splicing. No way Crutchfield could have seen that one coming and yippie I have new volt meter, zip ties and a bunch of butt splices.

DXI400-30+ mins The front speakers went in now problem the install kit worked perfect.

DXi525 - 1 hr + The Roll Bar speakers were a bit a trick due to having to hold the speaker, the grill frame, placing the spacers, screws all while going up and having only two hands. First one was the learning curve and the second one when in pretty quick. All said and done they looked great with the grills on.

KMM-100 3+ hours to finish

This is just a media receiver. The uninstall of the old system (previous owner had an Alpine) was simple. Getting the new on in took a few hours as I had to make a parts run and splice everything together from scratch.

Hooked the battery back up and was good to go.
Pros:
Recommendations really worked for the vehicle in question Easy install for one person - Tech support was great to deal with questions I had Instructions were basically spot on The sound difference is remarkable - At 70 mph on the interstate everything is clear and sounds great from music to audio books Looks good in the vehicle
Cons:
None on the speakers I see at this point in time.
3 out of 4 people found this helpful
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2 out of 5

Polk Audio DXi400

Written By Russ, Logansport, IN on Tuesday, March 26, 2013
Crutchfield Customer Review (What's this?)
 
These speakers have decent sound. I am wondering if I should have gone with the 4X6 to fit properly in the space. Maybe when I add an amplifier they will give out more sound but with factory deck they don't produce much.
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5 out of 5

Polk Audio DXi 400

Written By Don, Boulder, CO on Monday, March 25, 2013
Crutchfield Customer Review (What's this?)
 
Excellent for mids and highs. Using in my rear doors for some fill. I'm sending 50 RMS to them with the x-over set at 100 Hz. Can be cranked up with absolutely no distortion. The negative reviews stating a lack of bass are people simply using these improperly. It's a 4" speaker of that only goes down to 85 Hz.
Pros:
crystal clear
Cons:
none
3 out of 3 people found this helpful
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5 out of 5

Great product

Written By Sean, Spring valley mn on Sunday, March 17, 2013
Crutchfield Customer Review (What's this?)
 
Great product!!
Pros:
Easy to install and great up grade from stock speakers
Cons:
Not enough bass
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5 out of 5

Crispy Clear Highs

Written By BobbYM, East Coast on Friday, March 08, 2013
Crutchfield Customer Review (What's this?)
 
I was very lucky to catch these on sale here on Crutchfield, for less than half the price! They installed easily as a direct replacement for my factory front-door speakers. These speakers sound great, using only my Kenwood KDC-X395 head unit which puts out 22w RMS / /50w Peak, which also includes a crossover. These speakers put out decent mids and nice crisp highs.

For those writing negative reviews, saying these are no good for bass, please understand, you're NOT going to get deep bass and lows from a 4" speaker!!! Read the specs and understand them, these speakers are rated at 85-22,000 Hz, meaning you're not going to get 20 Hz unless you get subs.

I am very happy with these, they cut through the noise in my truck and the road noise nicely.
Pros:
Easy Install, Good Mid-range, Nice Highs
1 out of 1 people found this helpful
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5 out of 5

Great sound

Written By Bradley Porter, Marshfield, WI on Wednesday, March 06, 2013
 
I installed these speakers in a Dewalt work site radio/charger. The sound from these speakers is not over powering in the immediate room, but can be heard very clearly from many rooms away. (We are in the process of building a four story hotel.) I believe these speakers produce 'Bose' quality sound at a very affordable price. The music is heard, but you don't know exactly what room it is coming from. I'm glad I took out the factory speakers, and replaced them with the DXI400's
Pros:
Great room filling sound. Weather resistant cones. Sharp grille design.
Cons:
None!
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4 out of 5

Good mid-range speakers

Written By Rik C, San Antonio, TX on Tuesday, March 05, 2013
Crutchfield Customer Review (What's this?)
 
Installation was made easy thanks to Crutchfield. The speakers produce good mid-range sound with little bass. After tweaking my radio's audio adjustments, I got the perfect balance between these speakers and my rear speakers.
Pros:
free installation gear. great price. clear mid-range audio
Cons:
none
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5 out of 5

feedback

Written By crystal bingham, kountze tx 77625 on Friday, January 04, 2013
Crutchfield Customer Review (What's this?)
 
Fast service n very helpful with what I needed my son loves them
Pros:
Receive fast good quality
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4 out of 5

Polk DXi400 4" speakers

Written By Don, Wichita, KS on Thursday, November 29, 2012
Crutchfield Customer Review (What's this?)
 
Replaced blown speakers in my 95 Toyota pick-up. Awesome sound. Can't go wrong with these.
Pros:
Good sound quality for a decent price.
Cons:
None
1 out of 1 people found this helpful
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5 out of 5

polk audio

Written By Jfischer, Boston on Sunday, September 02, 2012
Crutchfield Customer Review (What's this?)
 
used in my 1985 goldwing get nothing but compiments on the sound
Pros:
good fit
Cons:
non
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5 out of 5

Awesome customer service and they sound good too

Written By Tom R, Denver CO on Thursday, August 02, 2012
Crutchfield Customer Review (What's this?)
 
Not only do the speakers sound much better than the blown speaker that were in the M Roadster I just bought, but when I clicked on the survey about 4 minutes agao I found out they went on sale. Took no time to get a price adjustment. Now that IS service! Thanks. Installation was easy, everything the advisor said was correct. Yes, they fit the rear of a Z3 even though not listed on the website.
Pros:
decent sound.
Cons:
none.
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4 out of 5

Little speaker usually mean little sound...NOT THESE!!

Written By Mountain Mike, Grants Pass, OR on Friday, July 20, 2012
Crutchfield Customer Review (What's this?)
 
The heading of my review says it all....I used these as a replacement to two pair of factory speakers in my Artic Fox 990 camper. What a difference they made. The high and mids where crisp and clean. Not much low end response but my Sound Ordance B-8PT filled that void.
Pros:
Easy to install. Great grill desing
Cons:
none
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2 out of 5

polk audio 4" speakers

Written By Dave f, killingworth ct on Monday, June 18, 2012
Crutchfield Customer Review (What's this?)
 
would not by these again or tell ant one else to
Pros:
sound ok
Cons:
covers if they don't go in right and get bent a little they will never never go in right
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5 out of 5

Polk Audio DXi400

Written By Anonymous, Ft. Rucker, AL on Sunday, June 17, 2012
Crutchfield Customer Review (What's this?)
 
These speakers sound great, very clear and great full sound. Highly recommend these speakers. I have them installed on my Highliner headliner on my 1970 F100, they sound absolutely great!! Could not be happier
Pros:
price, and sound quality
Cons:
none
1 out of 1 people found this helpful
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5 out of 5

Great little speakers

Written By Ben S., Searcy, AR on Saturday, June 02, 2012
Crutchfield Customer Review (What's this?)
 
Awesome sound blow away the Boston Acoustics SE series they replaced. They are clear and loud.
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4 out of 5

Great speakers

Written By Dangerous Dirk, South Bend, IN on Wednesday, April 04, 2012
 
For the price, these are great little speakers. With the included mounting bracket they fit perfectly in my 2005 TJ rubicon.
Pros:
Cheap price, great quality
1 out of 1 people found this helpful
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5 out of 5

Polk speakers

Written By Larry, Tucker, Ga. on Tuesday, March 27, 2012
Crutchfield Customer Review (What's this?)
 
They were easy to install and sound a heck of a lot better than the factory speakers. After I put them in I wanted even better sound so I purchased an Alpine radio. It was easy to install in my Wrangler.
Pros:
Simple to install.
Cons:
none
2 out of 2 people found this helpful
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5 out of 5

Jeep Wranglers LOOK NO FURTHER!

Written By .:eMETAL:., Midcoast, Maine on Monday, March 26, 2012
Crutchfield Customer Review (What's this?)
 
Installed in a 99 Jeep Wrangler TJ. These in the dash paired with a Pioneer 4400HD receiver and some Polk DXi525 in the roll bar and WOW! No problem hearing anything with the top down and the doors off. Wrangler owners look no further, do this setup and be done for an all around low cost.

There aren't really any lows with these but that's not what these are for, if you're looking for hard hitting bass you're looking for a subwoofer anyway and not a speaker.
Pros:
easy to install, AMAZING SOUND! MARINE GRADE!
Cons:
NONE!
4 out of 4 people found this helpful
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5 out of 5

Polk Audio DXi400

Written By Anonymous, camp verde, az. on Sunday, February 26, 2012
Crutchfield Customer Review (What's this?)
 
i installed these in my honda goldwing and they sound great even down the highway with the trucks i can still here them very well at 75 mph
5 out of 6 people found this helpful
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5 out of 5

These Pack A Punch

Written By Tanner, Elkins WV on Monday, July 25, 2011
 
I just installed these in my 97 Jeep wrangler. All I can say is wow.
5 out of 5 people found this helpful
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5 out of 5

Impressive Sound and Clarity

Written By Lisa M., Leonardtown, MD on Saturday, July 23, 2011
Crutchfield Customer Review (What's this?)
 
I own a 2003 Jeep Wrangler and my sound system replacement all started when my center console subwoofer started rattling and sounding terrible. So after researching a compatible sub that would fit in the original factory stock location with a small amount of modification, I came up with a Kicker 10CVT654 for shallow installs. Then was told the factory radio wouldn't power that sub, which became the perfect opportunity to upgrade my sound system, not really thinking that I would notice much of a difference. WOW, was I wrong! I bought an Alpine receiver CDE126-BT with 2 sets of Polk Audio speakers DXi525 for the roll bar and DXi400 for the dash. Added a small Kicker amp for the subwoofer and added an Alpine power pack KTP-445 to the receiver for extra power. Awesome sound and clarity even with the volume kicked up it sounds loud, crisp and clean! I can really notice a HUGE difference in the quality of sound! Loving it!
4 out of 4 people found this helpful
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4 out of 5

Polk Audio DXi400

Written By adam, nys on Wednesday, April 13, 2011
Crutchfield Customer Review (What's this?)
 
great speackers for the price and size, larger speakers will not fit in my small
car.
1 out of 3 people found this helpful
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5 out of 5

Nice sound for small speakers

Written By Scuba, Elk Grove on Thursday, March 31, 2011
Crutchfield Customer Review (What's this?)
 
Just installed these in my 01 Jeep TJ in the dash. The adapter plate was easy
to attach and put in the stock dash screwholes easily. The grill and front spacer
doesn't fit in the Jeep cos it's too narrow of a location. Great sound tho.
5 out of 5 people found this helpful
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5 out of 5

Worth every penny

Written By LuisC, Hot AZ on Saturday, March 26, 2011
Crutchfield Customer Review (What's this?)
 
I installed a pair of these in my Jeep Rubicon. Sounds great eventhough I'm
currently still using the factory headunit. Crutchfield provided some speaker
plates but I didn't even need them. The Jeep came with a factory 7 speaker
system and the dash speakers came in factory enclosures and these
PolkDXi400's fit right in. The connectors that Crutchfield provided enabled me
to install them in less than 30 minutes.
12 out of 13 people found this helpful
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Add accessories for the Polk Audio DXi400

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

Dynamat 10415 Xtreme Speaker Kit Two 10-in. x 10-in. Sheets
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Skewdriver Pro SPK4042 Ratcheting straight and offset screwdriver set with 40 bits (Skewdriver Pro with ratchet handle, pictured)
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Spec Tools SQR-200a Squeeze Wrench Narrow space ratchet kit with 18 sockets
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Bass Blockers Pairs (300 Hz cut-off)
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For a more in-depth review and enhanced detailed information on the Polk Audio DXi400, please visit the Crutchfield website product page (/ISEO-rccbcspd/p_107DXI400/Polk-Audio-DXi400.html ).