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Polk Audio DXi6501

6-1/2" component speaker system — also fit 6-3/4" openings

74 Reviews | 4 questions - 6 answers

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Item # 107DXI6501

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Our take on the Polk Audio DXi6501

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.

Polk Audio DXi6501

The 1" silk/polymer tweeted can be surface- or flush-mounted for better imaging.

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

Polk's DXi6501 component speaker system features 6-1/2" 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.

Silk/polymer dome tweeters broadcast sweet sound

Rest assured, you'll hear every detail of your most enthralling musical moments. Each 1" silk/polymer dome tweeter brings out the high-frequency highlights in your music, and a proprietary magnetic liquid cools the tweeters so you'll get clear sound and excellent long-term performance. You can set your own stage — surface- or flush-mount the tweeters with the included swivel-mount cups, and aim the tweeters towards your ears so you can really enjoy the show.

External crossovers for stand-out detail

Polk includes high-quality crossover networks that create a smooth transition between woofer and tweeter, so you'll hear accurate, balanced performance from this system. From an intensely quiet acoustic pluck to the most exhilarating electric solo, it'll be a very entertaining ride.

Installation note: You'll need a pair of our universal backstraps to install the tweeters in the factory locations.

love them super crisp and great bass LOVE THEM!!!

Nick, Conroe, TX

Featured Video:

What's in the Box:

  • 2 Woofers
  • 2 Woofer grilles
  • 2 Woofer spacer/adapter brackets
  • 2 Woofer foam mounting gaskets
  • 2 Tweeters (each tweeter has attached 34" speaker leads)
  • 2 Flush-mount tweeter cups (with tweeters installed)
  • 2 Metal flush-mount clamps
  • 2 Surface-mount tweeter cups
  • 2 Crossovers
  • Four 35" lengths of speaker wire (each has female quick-slides on one end and tinned wire on the other)
  • Fourteen 1" Self-tapping screws
  • Eight 3/8" Self-tapping screws
  • 8 Speed clips
  • Owner's manual (English/ Spanish/ French/ German/ Italian/ Portuguese)
  • Online registration information

Product Highlights:

  • component speaker system includes two 6-1/2" woofers, 2 tweeters, and 2 crossovers
  • polymer composite woofer with butyl rubber surround
  • supplied adapter rings allow for fit into 6-3/4" locations
  • 1" liquid-cooled silk/polymer composite dome tweeter
  • flush- and surface-mount swivel cups
  • 2-way external crossover network (12 dB/octave, 4,000 Hz high- and low-pass)
  • electronic tweeter protection circuit
  • power range: 10-100 watts RMS (300 watts peak power)
  • frequency response: 35-23,000 Hz
  • sensitivity: 92 dB
  • top-mount depth: 2"
  • warranty: 1 year
  • Our 60-day money-back guarantee

Polk Audio DXi6501 Reviews

Average Customer Review(s):

(74 Reviews)
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Hands-on research

Features and Specs

Speaker Size 6 3/4
Design 2-way
Tweeter Design 1" Dome
Tweeter Composition Silk/Polymer Composite
Woofer Composition Bi-Laminate Composite
Woofer Surround Rubber
Parts Warranty 1 Year
Labor Warranty 1 Year
Sensitivity (1W at 1 meter) 92
Sensitivity at 2.83 volts N/A
Frequency Response 35 - 23k Hz
Minimum RMS Wattage 10
Maximum RMS Wattage 100
Peak Power Handling (Watts) 300
Impedance (Ohms) 4
Top-mount Depth (Inches) 2
Bottom-mount Depth (Inches) N/A
Cutout Diameter or Length (inches) 5

Product Research



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 creates 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 woofer 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.

Mounting: Out of the box the DXi 6501 woofers are a direct replacement for many standard 6-3/4" applications. Mounting brackets are included with holes matching standard 6-1/2" (3-hole), Ford 6-1/2" (asymmetrical 4-hole), and various 6-3/4" applications. Without using the mounting brackets the speaker also fits into many standard 6-1/2" openings, but the four hole pattern is not a direct replacement (new screw holes would need to be drilled; in this instance mounting depth would be 1.947" and mounting height 0.427"; this application does not sort in the Crutchfield Vehicle Selector because using the mounting bracket requires no modification, and is therefore the preferred 6-1/2" mounting method).


Silk Dome Tweeters: The 1" liquid-cooled, silk/polymer composite dome tweeters provide clear, detailed highs.

Neodymium Magnets: Each tweeter employs a light-weight neodymium magnet for better efficiency.

Mounting: The supplied mounting cups allow you to surface or flush mount the tweeters. The tweeters swivel in the flush-mount housings, allowing you to adjust them for optimum imaging.

Tweeter Mounting Dimensions:

  Surface Mount Flush Mount
Mounting Height 1.030" 0.205"
Depth 0.21" (screw depth) 1.082"
Frame Diameter 2.051" 2.552"
Cutout Diameter N/A 2.018"


Design: The outboard 2-way Butterworth crossovers have a 12 dB/octave slope (high-pass and low-pass).

Tweeter Level Switch: You can adjust the output of the tweeter to match a level appropriate to your vehicle or your system. On the end of crossover (opposite the terminals) the switch can be set to -3 dB, 0 dB, or +3 dB.

Protection Circuit: Each crossover has a built-in electronic circuit that protects the tweeter from accidental overdriving.

Connections: The crossover inputs and outputs are screw terminals. The terminals will accommodate the included wire or spade connectors up to 0.3" wide.

Mounting: There are two mounting holes in the base of each crossover; the cover must be removed to install the mounting screws.

Crossover Dimensions:

  • Width: 3.477"
  • Height: 1.130"
  • Depth: 3.667"

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 verify what’s in the box, 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.

Staff Reviews

Product reviews from the Crutchfield Labs

Four popular car speaker lines
by Robert Ferency-Viars

We listen to Alpine Type-S, Polk Audio DXi, Infinity Reference X, and Rockford Fosgate Punch car speakers in the Crutchfield Labs.

What are the Labs?
Q & A

Customer Q&A

Crutchfield asked  
Why did you buy this?

I've used Polk speakers in my cars and trucks forever it seems. I believe for the money they are a BEST QUALITY system! [ RANDAL G  Jan 04, 2017 ]
great sound!! [ Stepan  Dec 15, 2016 ]
Satistied previous owner of polk speakers. [ Chang Hoon  Nov 30, 2016 ]
Polk audio makes high fidelity speakers for a reasonable price. [ Joanne  Nov 26, 2016 ]
Polk Audio has always impressed me, from car audio to home surround systems. [ Leonard  Nov 08, 2016 ]
Wanted tweeters closer to my ears in a Jeep cj7 [ shawn  Sep 08, 2016 ]
Objectively better than many alternatives. [ Bryan  Aug 27, 2016 ]
Price and quality [ JAMES  Aug 18, 2016 ]
Good reviews, good price. Wider frequency range than other speakers. [ Chris  Aug 17, 2016 ]
The specs were perfect! [ David  Aug 07, 2016 ]
Great price. Good quality. Previous good experience with Polk car audio. [ Gregory  Jul 17, 2016 ]
My home theater consists entirely of Polk Audio speakers and I LOVE them!. My wife blew the stock speakers out of the front of her Chevrolet Malibu so naturally I decided to go with Polk. These speakers really need an amp to go with them, but I was not let down with this decision! [ Nathan  Jul 05, 2016 ]
Needed budget speakers for the Suburban... Polk has great price and great sound! Can't beat'm! [ ANDREW  May 26, 2016 ]
good experience with Polk [ Rick  Apr 23, 2016 ]

4 questions already asked

Thanks for your question. For information on comparing two or more models I would recommend reaching out to an Advisor by phone (1-800-324-9695) or online chat. They will be able to help determine the differences and help you make the best choice for your system and your budget. [ Krissy  Nov 23, 2015 ]  Staff
I can tell you personally that these will sound fantastic. I had a set of DXi 6501s in the front and a set of DXi 651's in back all hooked up to the KTU-445U power pack. I was able to crank then with crystal clear sound until my ears were ringing/cracking without the slightest bit of distortion. I had them hooked up in a 2013 Elantra Coupe and liked the system so much that I rebought it and now putting it in my 2012 Genesis coupe. [ Mike  May 23, 2016 ]
I forwarded your question to an Advisor and they responded with the following: These speakers will sound great with an Alpine KTU 445U power pack. 45w of power is more than enough to play clear audio at moderate/loud levels. The Polk speakers are fairly efficient, so they do not require as much power as most other speakers. If you would like to discuss further you can contact an Advisor directly by phone (1-800-324-9695) or online chat. [ Krissy  Jan 13, 2015 ]  Staff
For the 6501s... no, you TECHNICALLY don't need an amp, but a standard aftermarket head unit is only continually pushing about 20 watts per channel. They will sound good, but not really any better than the dxi651s, the coaxial set, without a lot of power. You're better off saving your money if you aren't going to amplify these. However, I DO really recommend the 651s. They'll sound just as good if you aren't amplifying them. [ Derek  Apr 28, 2014 ]
For details on fit or installation please contact an Advisor by phone (1-800-324-9695) or online chat. They will be able to pull up your vehicle and give you the details on if this will fit and what you will need for an installation in your vehicle. [ Krissy  Mar 17, 2014 ]  Staff
I don't see a picture listed for the grilles on this speaker. However, I would expect them to be similar to the grilles from other speakers in this line from Polk. [ Jeff  Nov 25, 2013 ]  Staff