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Polk Audio DXi521
5-1/4" 2-way car speakers
Our take on the Polk Audio DXi521 by Crutchfield's John Pollard
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 DXi521 speakers feature 5-1/4" 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.
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.
Easy to install, clear mids and highs as most polk audio speakers. Excellent range to enjoy many genres of music. A nice amp would help them shine due to distortion at higher volumes from just the pioneer bluetooth deck. Good speakers for the size nonetheless
Anonymous, San Leandro, CA
What's in the Box:
- Two 2-way speakers
- 2 Grilles
- Eight 1" Self-tapping screws
- Eight 3/8" Self-tapping screws
- 8 Speed clips
- Owner's Manual (English/ Spanish/ French/ German/ Italian/ Portuguese)
- Online product registration information
- 5-1/4" 2-way cars speakers (pair)
- polymer composite woofer with butyl rubber surround
- 3/4" aluminum dome tweeter
- power range: 2-45 watts RMS (135 watts peak power)
- frequency response: 60-22,000 Hz
- sensitivity: 93 dB
- top-mount depth: 2-5/16"
- warranty: 1 year
- Our 60-day money-back guarantee
Polk Audio DXi521 Reviews
Average Customer Review(s):
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Features and Specs
|Speaker Size||5 1/4|
|Tweeter Design||3/4" Dome|
|Woofer Composition||Bi-Laminate Composite|
|Parts Warranty||1 Year|
|Labor Warranty||1 Year|
|Sensitivity (1W at 1 meter)||93|
|Sensitivity at 2.83 volts||N/A|
|Frequency Response||60 - 22k Hz|
|Minimum RMS Wattage||2|
|Maximum RMS Wattage||45|
|Peak Power Handling (Watts)||135|
|Top-mount Depth (Inches)||2 5/16|
|Bottom-mount Depth (Inches)||N/A|
|Cutout Diameter or Length (inches)||4 11/16|
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. Once the speakers are mounted, the tweeters can be tilted (approximately 25°) for optimum imaging.
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.
Product reviews from the Crutchfield Labs
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.
4 questions already asked
Thanks for your question. For information on selecting the best receiver 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 between the receiver models and help you make the best choice for your system. [ Kenny Mar 13, 2017 ] Staff
They can be, but not recommended. The marine grade speakers have different coatings on them to help with corrosion resistance and UV exposure. If you would like to discuss further you can contact an Advisor directly by phone (1-800-324-9695) or online chat. Hope that helps. [ Kenny Jan 18, 2016 ] Staff
Not sure what you mean by r type [ LARUE Aug 02, 2015 ]
I'm sure they could be modded to be biampable, but out of the box, no. [ TOM May 28, 2014 ]
They only have one positive and negative connection on the back for the whole speaker... There isn't a separate connection for the tweeter. Not sure if that helps or not. [ Brian May 28, 2014 ]